blob: d7fa4b86b092081b5da651537d8be15e4f025187 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Unit tests for eliding and formatting utility functions.
#include "ui/gfx/text_elider.h"
#include <stddef.h>
#include <memory>
#include <vector>
#include "base/files/file_path.h"
#include "base/i18n/rtl.h"
#include "base/run_loop.h"
#include "base/stl_util.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/test/task_environment.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/font.h"
#include "ui/gfx/font_list.h"
#include "ui/gfx/font_render_params.h"
#include "ui/gfx/text_utils.h"
using base::ASCIIToUTF16;
using base::UTF16ToUTF8;
using base::UTF16ToWide;
using base::UTF8ToUTF16;
using base::WideToUTF16;
namespace gfx {
namespace {
struct Testcase {
const std::string input;
const std::string output;
};
struct FileTestcase {
const base::FilePath::StringType input;
const std::string output;
// If this value is specified, we will try to cut the path down to the render
// width of this string; if not specified, output will be used.
const std::string using_width_of = std::string();
};
struct UTF16Testcase {
const base::string16 input;
const base::string16 output;
};
struct TestData {
const std::string a;
const std::string b;
const int compare_result;
};
} // namespace
TEST(TextEliderTest, ElideEmail) {
const std::string kEllipsisStr(kEllipsis);
// Test emails and their expected elided forms (from which the available
// widths will be derived).
// For elided forms in which both the username and domain must be elided:
// the result (how many characters are left on each side) can be font
// dependent. To avoid this, the username is prefixed with the characters
// expected to remain in the domain.
Testcase testcases[] = {
{"g@g.c", "g@g.c"},
{"g@g.c", kEllipsisStr},
{"ga@co.ca", "ga@c" + kEllipsisStr + "a"},
{"short@small.com", "s" + kEllipsisStr + "@s" + kEllipsisStr},
{"short@small.com", "s" + kEllipsisStr + "@small.com"},
{"short@longbutlotsofspace.com", "short@longbutlotsofspace.com"},
{"short@longbutnotverymuchspace.com",
"short@long" + kEllipsisStr + ".com"},
{"la_short@longbutverytightspace.ca",
"la" + kEllipsisStr + "@l" + kEllipsisStr + "a"},
{"longusername@gmail.com", "long" + kEllipsisStr + "@gmail.com"},
{"elidetothemax@justfits.com", "e" + kEllipsisStr + "@justfits.com"},
{"thatom_somelongemail@thatdoesntfit.com",
"thatom" + kEllipsisStr + "@tha" + kEllipsisStr + "om"},
{"namefits@butthedomaindoesnt.com",
"namefits@butthedo" + kEllipsisStr + "snt.com"},
{"widthtootight@nospace.com", kEllipsisStr},
{"nospaceforusername@l", kEllipsisStr},
{"little@littlespace.com", "l" + kEllipsisStr + "@l" + kEllipsisStr},
{"l@llllllllllllllllllllllll.com", "l@lllll" + kEllipsisStr + ".com"},
{"messed\"up@whyanat\"++@notgoogley.com",
"messed\"up@whyanat\"++@notgoogley.com"},
{"messed\"up@whyanat\"++@notgoogley.com",
"messed\"up@why" + kEllipsisStr + "@notgoogley.com"},
{"noca_messed\"up@whyanat\"++@notgoogley.ca",
"noca" + kEllipsisStr + "@no" + kEllipsisStr + "ca"},
{"at\"@@@@@@@@@...@@.@.@.@@@\"@madness.com",
"at\"@@@@@@@@@...@@.@." + kEllipsisStr + "@madness.com"},
// Special case: "m..." takes more than half of the available width; thus
// the domain must elide to "l..." and not "l...l" as it must allow enough
// space for the minimal username elision although its half of the
// available width would normally allow it to elide to "l...l".
{"mmmmm@llllllllll", "m" + kEllipsisStr + "@l" + kEllipsisStr},
};
const FontList font_list;
for (size_t i = 0; i < base::size(testcases); ++i) {
const base::string16 expected_output = UTF8ToUTF16(testcases[i].output);
EXPECT_EQ(expected_output,
ElideText(UTF8ToUTF16(testcases[i].input), font_list,
GetStringWidthF(expected_output, font_list),
ELIDE_EMAIL));
}
}
TEST(TextEliderTest, ElideEmailMoreSpace) {
const int test_widths_extra_spaces[] = {
10,
1000,
100000,
};
const char* test_emails[] = {
"a@c",
"test@email.com",
"short@verysuperdupperlongdomain.com",
"supermegalongusername@withasuperlonnnggggdomain.gouv.qc.ca",
};
const FontList font_list;
for (const auto* test_email : test_emails) {
const base::string16 test_email16 = UTF8ToUTF16(test_email);
const int mimimum_width = GetStringWidth(test_email16, font_list);
for (int extra_space : test_widths_extra_spaces) {
// Extra space is available: the email should not be elided.
EXPECT_EQ(test_email16,
ElideText(test_email16, font_list, mimimum_width + extra_space,
ELIDE_EMAIL));
}
}
}
TEST(TextEliderTest, TestFilenameEliding) {
const std::string kEllipsisStr(kEllipsis);
const base::FilePath::StringType kPathSeparator =
base::FilePath::StringType().append(1, base::FilePath::kSeparators[0]);
FileTestcase testcases[] = {
{FILE_PATH_LITERAL(""), ""},
{FILE_PATH_LITERAL("."), "."},
{FILE_PATH_LITERAL("filename.exe"), "filename.exe"},
{FILE_PATH_LITERAL(".longext"), ".longext"},
{FILE_PATH_LITERAL("pie"), "pie"},
{FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") +
kPathSeparator + FILE_PATH_LITERAL("filename.pie"),
"filename.pie"},
{FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") +
kPathSeparator + FILE_PATH_LITERAL("longfilename.pie"),
"long" + kEllipsisStr + ".pie"},
{FILE_PATH_LITERAL("http://path.com/filename.pie"), "filename.pie"},
{FILE_PATH_LITERAL("http://path.com/longfilename.pie"),
"long" + kEllipsisStr + ".pie"},
{FILE_PATH_LITERAL("piesmashingtacularpants"), "pie" + kEllipsisStr},
{FILE_PATH_LITERAL(".piesmashingtacularpants"), ".pie" + kEllipsisStr},
{FILE_PATH_LITERAL("cheese."), "cheese."},
{FILE_PATH_LITERAL("file name.longext"),
"file" + kEllipsisStr + ".longext"},
{FILE_PATH_LITERAL("fil ename.longext"),
"fil" + kEllipsisStr + ".longext", "fil " + kEllipsisStr + ".longext"},
{FILE_PATH_LITERAL("filename.longext"),
"file" + kEllipsisStr + ".longext"},
{FILE_PATH_LITERAL("filename.middleext.longext"),
"filename.mid" + kEllipsisStr + ".longext"},
{FILE_PATH_LITERAL("filename.superduperextremelylongext"),
"filename.sup" + kEllipsisStr + "emelylongext"},
{FILE_PATH_LITERAL("filenamereallylongtext.superdeduperextremelylongext"),
"filenamereall" + kEllipsisStr + "emelylongext"},
{FILE_PATH_LITERAL(
"file.name.really.long.text.superduperextremelylongext"),
"file.name.re" + kEllipsisStr + "emelylongext"}};
static const FontList font_list;
for (size_t i = 0; i < base::size(testcases); ++i) {
base::FilePath filepath(testcases[i].input);
base::string16 expected = UTF8ToUTF16(testcases[i].output);
base::string16 using_width_of = UTF8ToUTF16(
testcases[i].using_width_of.empty() ? testcases[i].output
: testcases[i].using_width_of);
expected = base::i18n::GetDisplayStringInLTRDirectionality(expected);
EXPECT_EQ(expected,
ElideFilename(filepath, font_list,
GetStringWidthF(using_width_of, font_list)));
}
}
TEST(TextEliderTest, ElideTextTruncate) {
const FontList font_list;
const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
struct TestData {
const char* input;
float width;
const char* output;
} cases[] = {
{ "", 0, "" },
{ "Test", 0, "" },
{ "", kTestWidth, "" },
{ "Tes", kTestWidth, "Tes" },
{ "Test", kTestWidth, "Test" },
{ "Tests", kTestWidth, "Test" },
};
for (size_t i = 0; i < base::size(cases); ++i) {
base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
cases[i].width, TRUNCATE);
EXPECT_EQ(cases[i].output, UTF16ToUTF8(result));
}
}
TEST(TextEliderTest, ElideTextEllipsis) {
const FontList font_list;
const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
const char* kEllipsis = "\xE2\x80\xA6";
const float kEllipsisWidth =
GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list);
struct TestData {
const char* input;
float width;
const char* output;
} cases[] = {
{ "", 0, "" },
{ "Test", 0, "" },
{ "Test", kEllipsisWidth, kEllipsis },
{ "", kTestWidth, "" },
{ "Tes", kTestWidth, "Tes" },
{ "Test", kTestWidth, "Test" },
};
for (size_t i = 0; i < base::size(cases); ++i) {
base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
cases[i].width, ELIDE_TAIL);
EXPECT_EQ(cases[i].output, UTF16ToUTF8(result));
}
}
TEST(TextEliderTest, ElideTextEllipsisFront) {
const FontList font_list;
const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
const std::string kEllipsisStr(kEllipsis);
const float kEllipsisWidth =
GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list);
const float kEllipsis23Width =
GetStringWidthF(UTF8ToUTF16(kEllipsisStr + "23"), font_list);
struct TestData {
const char* input;
float width;
const base::string16 output;
} cases[] = {
{ "", 0, base::string16() },
{ "Test", 0, base::string16() },
{ "Test", kEllipsisWidth, UTF8ToUTF16(kEllipsisStr) },
{ "", kTestWidth, base::string16() },
{ "Tes", kTestWidth, ASCIIToUTF16("Tes") },
{ "Test", kTestWidth, ASCIIToUTF16("Test") },
{ "Test123", kEllipsis23Width, UTF8ToUTF16(kEllipsisStr + "23") },
};
for (size_t i = 0; i < base::size(cases); ++i) {
base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
cases[i].width, ELIDE_HEAD);
EXPECT_EQ(cases[i].output, result);
}
}
// Checks that all occurrences of |first_char| are followed by |second_char| and
// all occurrences of |second_char| are preceded by |first_char| in |text|. Can
// be used to test surrogate pairs or two-character combining sequences.
static void CheckCodeUnitPairs(const base::string16& text,
base::char16 first_char,
base::char16 second_char) {
for (size_t index = 0; index < text.length(); ++index) {
EXPECT_NE(second_char, text[index]);
if (text[index] == first_char) {
ASSERT_LT(++index, text.length());
EXPECT_EQ(second_char, text[index]);
}
}
}
// Test that both both UTF-16 surrogate pairs and combining character sequences
// do not get split by ElideText.
TEST(TextEliderTest, ElideTextAtomicSequences) {
#if defined(OS_WIN)
// Needed to bypass DCHECK in GetFallbackFont.
base::test::SingleThreadTaskEnvironment task_environment(
base::test::SingleThreadTaskEnvironment::MainThreadType::UI);
#endif
const FontList font_list;
// The below is 'MUSICAL SYMBOL G CLEF' (U+1D11E), which is represented in
// UTF-16 as two code units forming a surrogate pair: 0xD834 0xDD1E.
const base::char16 kSurrogate[] = {0xD834, 0xDD1E, 0};
// The below is a Devanagari two-character combining sequence U+0921 U+093F.
// The sequence forms a single display character and should not be separated.
const base::char16 kCombiningSequence[] = {0x921, 0x93F, 0};
std::vector<base::string16> pairs;
pairs.push_back(kSurrogate);
pairs.push_back(kCombiningSequence);
for (const base::string16& pair : pairs) {
base::char16 first_char = pair[0];
base::char16 second_char = pair[1];
base::string16 test_string = pair + UTF8ToUTF16("x") + pair;
SCOPED_TRACE(test_string);
const float test_string_width = GetStringWidthF(test_string, font_list);
base::string16 result;
// Elide |text_string| to all possible widths and check that no instance of
// |pair| was split in two.
for (float width = 0; width <= test_string_width; width++) {
result = ElideText(test_string, font_list, width, TRUNCATE);
CheckCodeUnitPairs(result, first_char, second_char);
result = ElideText(test_string, font_list, width, ELIDE_TAIL);
CheckCodeUnitPairs(result, first_char, second_char);
result = ElideText(test_string, font_list, width, ELIDE_MIDDLE);
CheckCodeUnitPairs(result, first_char, second_char);
result = ElideText(test_string, font_list, width, ELIDE_HEAD);
CheckCodeUnitPairs(result, first_char, second_char);
}
}
}
TEST(TextEliderTest, ElideTextLongStrings) {
const base::string16 kEllipsisStr = UTF8ToUTF16(kEllipsis);
base::string16 data_scheme(UTF8ToUTF16("data:text/plain,"));
size_t data_scheme_length = data_scheme.length();
base::string16 ten_a(10, 'a');
base::string16 hundred_a(100, 'a');
base::string16 thousand_a(1000, 'a');
base::string16 ten_thousand_a(10000, 'a');
base::string16 hundred_thousand_a(100000, 'a');
base::string16 million_a(1000000, 'a');
// TODO(gbillock): Improve these tests by adding more string diversity and
// doing string compares instead of length compares. See bug 338836.
size_t number_of_as = 156;
base::string16 long_string_end(
data_scheme + base::string16(number_of_as, 'a') + kEllipsisStr);
UTF16Testcase testcases_end[] = {
{ data_scheme + ten_a, data_scheme + ten_a },
{ data_scheme + hundred_a, data_scheme + hundred_a },
{ data_scheme + thousand_a, long_string_end },
{ data_scheme + ten_thousand_a, long_string_end },
{ data_scheme + hundred_thousand_a, long_string_end },
{ data_scheme + million_a, long_string_end },
};
const FontList font_list;
float ellipsis_width = GetStringWidthF(kEllipsisStr, font_list);
for (size_t i = 0; i < base::size(testcases_end); ++i) {
// Compare sizes rather than actual contents because if the test fails,
// output is rather long.
EXPECT_EQ(testcases_end[i].output.size(),
ElideText(testcases_end[i].input, font_list,
GetStringWidthF(testcases_end[i].output, font_list),
ELIDE_TAIL).size());
EXPECT_EQ(kEllipsisStr,
ElideText(testcases_end[i].input, font_list, ellipsis_width,
ELIDE_TAIL));
}
size_t number_of_trailing_as = (data_scheme_length + number_of_as) / 2;
base::string16 long_string_middle(
data_scheme + base::string16(number_of_as - number_of_trailing_as, 'a') +
kEllipsisStr + base::string16(number_of_trailing_as, 'a'));
#if !defined(OS_IOS)
long_string_middle += kEllipsisStr;
#endif
UTF16Testcase testcases_middle[] = {
{data_scheme + ten_a, data_scheme + ten_a},
{data_scheme + hundred_a, data_scheme + hundred_a},
{data_scheme + thousand_a, long_string_middle},
{data_scheme + ten_thousand_a, long_string_middle},
{data_scheme + hundred_thousand_a, long_string_middle},
{data_scheme + million_a, long_string_middle},
};
for (size_t i = 0; i < base::size(testcases_middle); ++i) {
// Compare sizes rather than actual contents because if the test fails,
// output is rather long.
EXPECT_EQ(testcases_middle[i].output.size(),
ElideText(testcases_middle[i].input, font_list,
GetStringWidthF(testcases_middle[i].output, font_list),
ELIDE_MIDDLE)
.size());
EXPECT_EQ(kEllipsisStr, ElideText(testcases_middle[i].input, font_list,
ellipsis_width, ELIDE_MIDDLE));
}
base::string16 long_string_beginning(
kEllipsisStr + base::string16(number_of_as, 'a'));
#if !defined(OS_IOS)
long_string_beginning += kEllipsisStr;
#endif
UTF16Testcase testcases_beginning[] = {
{data_scheme + ten_a, data_scheme + ten_a},
{data_scheme + hundred_a, data_scheme + hundred_a},
{data_scheme + thousand_a, long_string_beginning},
{data_scheme + ten_thousand_a, long_string_beginning},
{data_scheme + hundred_thousand_a, long_string_beginning},
{data_scheme + million_a, long_string_beginning},
};
for (size_t i = 0; i < base::size(testcases_beginning); ++i) {
EXPECT_EQ(testcases_beginning[i].output.size(),
ElideText(
testcases_beginning[i].input, font_list,
GetStringWidthF(testcases_beginning[i].output, font_list),
ELIDE_HEAD).size());
EXPECT_EQ(kEllipsisStr, ElideText(testcases_beginning[i].input, font_list,
ellipsis_width, ELIDE_HEAD));
}
}
// Detailed tests for StringSlicer. These are faster and test more of the edge
// cases than the above tests which are more end-to-end.
TEST(TextEliderTest, StringSlicerBasicTest) {
// Must store strings in variables (StringSlicer retains a reference to them).
base::string16 text(UTF8ToUTF16("Hello, world!"));
base::string16 ellipsis(kEllipsisUTF16);
StringSlicer slicer(text, ellipsis, false, false);
EXPECT_EQ(UTF8ToUTF16(""), slicer.CutString(0, false));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(0, true));
EXPECT_EQ(UTF8ToUTF16("Hell"), slicer.CutString(4, false));
EXPECT_EQ(UTF8ToUTF16("Hell") + kEllipsisUTF16, slicer.CutString(4, true));
EXPECT_EQ(text, slicer.CutString(text.length(), false));
EXPECT_EQ(text + kEllipsisUTF16, slicer.CutString(text.length(), true));
StringSlicer slicer_begin(text, ellipsis, false, true);
EXPECT_EQ(UTF8ToUTF16("rld!"), slicer_begin.CutString(4, false));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("rld!"),
slicer_begin.CutString(4, true));
StringSlicer slicer_mid(text, ellipsis, true, false);
EXPECT_EQ(UTF8ToUTF16("Held!"), slicer_mid.CutString(5, false));
EXPECT_EQ(UTF8ToUTF16("Hel") + kEllipsisUTF16 + UTF8ToUTF16("d!"),
slicer_mid.CutString(5, true));
}
TEST(TextEliderTest, StringSlicerWhitespace_UseDefault) {
// Must store strings in variables (StringSlicer retains a reference to them).
base::string16 text(UTF8ToUTF16("Hello, world!"));
base::string16 ellipsis(kEllipsisUTF16);
// Eliding the end of a string should result in whitespace being removed
// before the ellipsis by default.
StringSlicer slicer_end(text, ellipsis, false, false);
EXPECT_EQ(UTF8ToUTF16("Hello,") + kEllipsisUTF16,
slicer_end.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hello,") + kEllipsisUTF16,
slicer_end.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hello, w") + kEllipsisUTF16,
slicer_end.CutString(8, true));
// Eliding the start of a string should result in whitespace being removed
// after the ellipsis by default.
StringSlicer slicer_begin(text, ellipsis, false, true);
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("world!"),
slicer_begin.CutString(6, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("world!"),
slicer_begin.CutString(7, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16(", world!"),
slicer_begin.CutString(8, true));
// Eliding the middle of a string should *NOT* result in whitespace being
// removed around the ellipsis by default.
StringSlicer slicer_mid(text, ellipsis, true, false);
text = UTF8ToUTF16("Hey world!");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("rld!"),
slicer_mid.CutString(8, true));
}
TEST(TextEliderTest, StringSlicerWhitespace_NoTrim) {
// Must store strings in variables (StringSlicer retains a reference to them).
base::string16 text(UTF8ToUTF16("Hello, world!"));
base::string16 ellipsis(kEllipsisUTF16);
// Eliding the end of a string should not result in whitespace being removed
// before the ellipsis in no-trim mode.
StringSlicer slicer_end(text, ellipsis, false, false, false);
EXPECT_EQ(UTF8ToUTF16("Hello,") + kEllipsisUTF16,
slicer_end.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hello, ") + kEllipsisUTF16,
slicer_end.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hello, w") + kEllipsisUTF16,
slicer_end.CutString(8, true));
// Eliding the start of a string should not result in whitespace being removed
// after the ellipsis in no-trim mode.
StringSlicer slicer_begin(text, ellipsis, false, true, false);
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("world!"),
slicer_begin.CutString(6, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16(" world!"),
slicer_begin.CutString(7, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16(", world!"),
slicer_begin.CutString(8, true));
// Eliding the middle of a string should *NOT* result in whitespace being
// removed around the ellipsis in no-trim mode.
StringSlicer slicer_mid(text, ellipsis, true, false, false);
text = UTF8ToUTF16("Hey world!");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("rld!"),
slicer_mid.CutString(8, true));
}
TEST(TextEliderTest, StringSlicerWhitespace_Trim) {
// Must store strings in variables (StringSlicer retains a reference to them).
base::string16 text(UTF8ToUTF16("Hello, world!"));
base::string16 ellipsis(kEllipsisUTF16);
// Eliding the end of a string should result in whitespace being removed
// before the ellipsis in trim mode.
StringSlicer slicer_end(text, ellipsis, false, false, true);
EXPECT_EQ(UTF8ToUTF16("Hello,") + kEllipsisUTF16,
slicer_end.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hello,") + kEllipsisUTF16,
slicer_end.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hello, w") + kEllipsisUTF16,
slicer_end.CutString(8, true));
// Eliding the start of a string should result in whitespace being removed
// after the ellipsis in trim mode.
StringSlicer slicer_begin(text, ellipsis, false, true, true);
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("world!"),
slicer_begin.CutString(6, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16("world!"),
slicer_begin.CutString(7, true));
EXPECT_EQ(kEllipsisUTF16 + UTF8ToUTF16(", world!"),
slicer_begin.CutString(8, true));
// Eliding the middle of a string *should* result in whitespace being removed
// around the ellipsis in trim mode.
StringSlicer slicer_mid(text, ellipsis, true, false, true);
text = UTF8ToUTF16("Hey world!");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("ld!"),
slicer_mid.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("rld!"),
slicer_mid.CutString(8, true));
}
TEST(TextEliderTest, StringSlicer_ElideMiddle_MultipleWhitespace) {
// Must store strings in variables (StringSlicer retains a reference to them).
base::string16 text(UTF8ToUTF16("Hello world!"));
base::string16 ellipsis(kEllipsisUTF16);
// Eliding the middle of a string should not result in whitespace being
// removed around the ellipsis in default whitespace mode.
StringSlicer slicer_default(text, ellipsis, true, false);
text = UTF8ToUTF16("Hey U man");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_default.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_default.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_default.CutString(8, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_default.CutString(9, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_default.CutString(10, true));
// Eliding the middle of a string should not result in whitespace being
// removed around the ellipsis in no-trim mode.
StringSlicer slicer_notrim(text, ellipsis, true, false, false);
text = UTF8ToUTF16("Hey U man");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_notrim.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_notrim.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_notrim.CutString(8, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_notrim.CutString(9, true));
EXPECT_EQ(UTF8ToUTF16("Hey ") + kEllipsisUTF16 + UTF8ToUTF16(" man"),
slicer_notrim.CutString(10, true));
// Eliding the middle of a string *should* result in whitespace being removed
// around the ellipsis in trim mode.
StringSlicer slicer_trim(text, ellipsis, true, false, true);
text = UTF8ToUTF16("Hey U man");
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_trim.CutString(6, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_trim.CutString(7, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_trim.CutString(8, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_trim.CutString(9, true));
EXPECT_EQ(UTF8ToUTF16("Hey") + kEllipsisUTF16 + UTF8ToUTF16("man"),
slicer_trim.CutString(10, true));
}
TEST(TextEliderTest, StringSlicerSurrogate) {
// The below is 'MUSICAL SYMBOL G CLEF' (U+1D11E), which is represented in
// UTF-16 as two code units forming a surrogate pair: 0xD834 0xDD1E.
const base::char16 kSurrogate[] = {0xD834, 0xDD1E, 0};
base::string16 text(UTF8ToUTF16("abc") + kSurrogate + UTF8ToUTF16("xyz"));
base::string16 ellipsis(kEllipsisUTF16);
StringSlicer slicer(text, ellipsis, false, false);
// Cut surrogate on the right. Should round left and exclude the surrogate.
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(0, true));
EXPECT_EQ(UTF8ToUTF16("abc") + kEllipsisUTF16, slicer.CutString(4, true));
EXPECT_EQ(text + kEllipsisUTF16, slicer.CutString(text.length(), true));
// Cut surrogate on the left. Should round right and exclude the surrogate.
StringSlicer slicer_begin(text, ellipsis, false, true);
EXPECT_EQ(base::string16(kEllipsisUTF16) + UTF8ToUTF16("xyz"),
slicer_begin.CutString(4, true));
// Cut surrogate in the middle. Should round right and exclude the surrogate.
base::string16 short_text(UTF8ToUTF16("abc") + kSurrogate);
StringSlicer slicer_mid(short_text, ellipsis, true, false);
EXPECT_EQ(UTF8ToUTF16("a") + kEllipsisUTF16, slicer_mid.CutString(2, true));
// String that starts with a dangling trailing surrogate.
base::char16 dangling_trailing_chars[] = {kSurrogate[1], 0};
base::string16 dangling_trailing_text(dangling_trailing_chars);
StringSlicer slicer_dangling_trailing(dangling_trailing_text, ellipsis, false,
false);
EXPECT_EQ(base::string16(kEllipsisUTF16),
slicer_dangling_trailing.CutString(0, true));
EXPECT_EQ(dangling_trailing_text + kEllipsisUTF16,
slicer_dangling_trailing.CutString(1, true));
}
TEST(TextEliderTest, StringSlicerCombining) {
// The following string contains three combining character sequences (one for
// each category of combining mark):
// LATIN SMALL LETTER E + COMBINING ACUTE ACCENT + COMBINING CEDILLA
// LATIN SMALL LETTER X + COMBINING ENCLOSING KEYCAP
// DEVANAGARI LETTER DDA + DEVANAGARI VOWEL SIGN I
const base::char16 kText[] = {
'e', 0x301, 0x327, ' ', 'x', 0x20E3, ' ', 0x921, 0x93F, 0};
base::string16 text(kText);
base::string16 ellipsis(kEllipsisUTF16);
StringSlicer slicer(text, ellipsis, false, false);
// Attempt to cut the string for all lengths. When a combining sequence is
// cut, it should always round left and exclude the combining sequence.
// Whitespace is also cut adjacent to the ellipsis.
// First sequence:
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(0, true));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(1, true));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(2, true));
EXPECT_EQ(text.substr(0, 3) + kEllipsisUTF16, slicer.CutString(3, true));
// Second sequence:
EXPECT_EQ(text.substr(0, 3) + kEllipsisUTF16, slicer.CutString(4, true));
EXPECT_EQ(text.substr(0, 3) + kEllipsisUTF16, slicer.CutString(5, true));
EXPECT_EQ(text.substr(0, 6) + kEllipsisUTF16, slicer.CutString(6, true));
// Third sequence:
EXPECT_EQ(text.substr(0, 6) + kEllipsisUTF16, slicer.CutString(7, true));
EXPECT_EQ(text.substr(0, 6) + kEllipsisUTF16, slicer.CutString(8, true));
EXPECT_EQ(text + kEllipsisUTF16, slicer.CutString(9, true));
// Cut string in the middle, splitting the second sequence in half. Should
// round both left and right, excluding the second sequence.
StringSlicer slicer_mid(text, ellipsis, true, false);
EXPECT_EQ(text.substr(0, 4) + kEllipsisUTF16 + text.substr(6),
slicer_mid.CutString(9, true));
// String that starts with a dangling combining mark.
base::char16 dangling_mark_chars[] = {text[1], 0};
base::string16 dangling_mark_text(dangling_mark_chars);
StringSlicer slicer_dangling_mark(dangling_mark_text, ellipsis, false, false);
EXPECT_EQ(base::string16(kEllipsisUTF16),
slicer_dangling_mark.CutString(0, true));
EXPECT_EQ(dangling_mark_text + kEllipsisUTF16,
slicer_dangling_mark.CutString(1, true));
}
TEST(TextEliderTest, StringSlicerCombiningSurrogate) {
// The ultimate test: combining sequences comprised of surrogate pairs.
// The following string contains a single combining character sequence:
// MUSICAL SYMBOL G CLEF (U+1D11E) + MUSICAL SYMBOL COMBINING FLAG-1 (U+1D16E)
// Represented as four UTF-16 code units.
const base::char16 kText[] = {0xD834, 0xDD1E, 0xD834, 0xDD6E, 0};
base::string16 text(kText);
base::string16 ellipsis(kEllipsisUTF16);
StringSlicer slicer(text, ellipsis, false, false);
// Attempt to cut the string for all lengths. Should always round left and
// exclude the combining sequence.
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(0, true));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(1, true));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(2, true));
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer.CutString(3, true));
EXPECT_EQ(text + kEllipsisUTF16, slicer.CutString(4, true));
// Cut string in the middle. Should exclude the sequence.
StringSlicer slicer_mid(text, ellipsis, true, false);
EXPECT_EQ(base::string16(kEllipsisUTF16), slicer_mid.CutString(4, true));
}
TEST(TextEliderTest, ElideString) {
struct TestData {
const char* input;
size_t max_len;
bool result;
const char* output;
} cases[] = {
{ "Hello", 0, true, "" },
{ "", 0, false, "" },
{ "Hello, my name is Tom", 1, true, "H" },
{ "Hello, my name is Tom", 2, true, "He" },
{ "Hello, my name is Tom", 3, true, "H.m" },
{ "Hello, my name is Tom", 4, true, "H..m" },
{ "Hello, my name is Tom", 5, true, "H...m" },
{ "Hello, my name is Tom", 6, true, "He...m" },
{ "Hello, my name is Tom", 7, true, "He...om" },
{ "Hello, my name is Tom", 10, true, "Hell...Tom" },
{ "Hello, my name is Tom", 100, false, "Hello, my name is Tom" }
};
for (size_t i = 0; i < base::size(cases); ++i) {
base::string16 output;
EXPECT_EQ(cases[i].result,
ElideString(UTF8ToUTF16(cases[i].input),
cases[i].max_len, &output));
EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
}
}
TEST(TextEliderTest, ElideRectangleText) {
const FontList font_list;
const int line_height = font_list.GetHeight();
const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
struct TestData {
const char* input;
float available_pixel_width;
int available_pixel_height;
bool truncated_y;
const char* output;
} cases[] = {
{ "", 0, 0, false, NULL },
{ "", 1, 1, false, NULL },
{ "Test", test_width, 0, true, NULL },
{ "Test", test_width, 1, false, "Test" },
{ "Test", test_width, line_height, false, "Test" },
{ "Test Test", test_width, line_height, true, "Test" },
{ "Test Test", test_width, line_height + 1, false, "Test|Test" },
{ "Test Test", test_width, line_height * 2, false, "Test|Test" },
{ "Test Test", test_width, line_height * 3, false, "Test|Test" },
{ "Test Test", test_width * 2, line_height * 2, false, "Test|Test" },
{ "Test Test", test_width * 3, line_height, false, "Test Test" },
{ "Test\nTest", test_width * 3, line_height * 2, false, "Test|Test" },
{ "Te\nst Te", test_width, line_height * 3, false, "Te|st|Te" },
{ "\nTest", test_width, line_height * 2, false, "|Test" },
{ "\nTest", test_width, line_height, true, "" },
{ "\n\nTest", test_width, line_height * 3, false, "||Test" },
{ "\n\nTest", test_width, line_height * 2, true, "|" },
{ "Test\n", 2 * test_width, line_height * 5, false, "Test|" },
{ "Test\n\n", 2 * test_width, line_height * 5, false, "Test||" },
{ "Test\n\n\n", 2 * test_width, line_height * 5, false, "Test|||" },
{ "Test\nTest\n\n", 2 * test_width, line_height * 5, false, "Test|Test||" },
{ "Test\n\nTest\n", 2 * test_width, line_height * 5, false, "Test||Test|" },
{ "Test\n\n\nTest", 2 * test_width, line_height * 5, false, "Test|||Test" },
{ "Te ", test_width, line_height, false, "Te" },
{ "Te Te Test", test_width, 3 * line_height, false, "Te|Te|Test" },
};
for (size_t i = 0; i < base::size(cases); ++i) {
std::vector<base::string16> lines;
EXPECT_EQ(cases[i].truncated_y ? INSUFFICIENT_SPACE_VERTICAL : 0,
ElideRectangleText(UTF8ToUTF16(cases[i].input),
font_list,
cases[i].available_pixel_width,
cases[i].available_pixel_height,
TRUNCATE_LONG_WORDS,
&lines));
if (cases[i].output) {
const std::string result =
UTF16ToUTF8(base::JoinString(lines, ASCIIToUTF16("|")));
EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
} else {
EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
}
}
}
TEST(TextEliderTest, ElideRectangleTextFirstWordTruncated) {
const FontList font_list;
const int line_height = font_list.GetHeight();
const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
const float tes_width = GetStringWidthF(ASCIIToUTF16("Tes"), font_list);
std::vector<base::string16> lines;
auto result_for_width = [&](const char* input, float width) {
lines.clear();
return ElideRectangleText(ASCIIToUTF16(input), font_list, width,
line_height * 4, WRAP_LONG_WORDS, &lines);
};
// Test base case.
EXPECT_EQ(0, result_for_width("Test", test_width));
EXPECT_EQ(1u, lines.size());
EXPECT_EQ(ASCIIToUTF16("Test"), lines[0]);
// First word truncated.
EXPECT_EQ(INSUFFICIENT_SPACE_FOR_FIRST_WORD,
result_for_width("Test", tes_width));
EXPECT_EQ(2u, lines.size());
EXPECT_EQ(ASCIIToUTF16("Tes"), lines[0]);
EXPECT_EQ(ASCIIToUTF16("t"), lines[1]);
// Two words truncated.
EXPECT_EQ(INSUFFICIENT_SPACE_FOR_FIRST_WORD,
result_for_width("Test\nTest", tes_width));
EXPECT_EQ(4u, lines.size());
EXPECT_EQ(ASCIIToUTF16("Tes"), lines[0]);
EXPECT_EQ(ASCIIToUTF16("t"), lines[1]);
EXPECT_EQ(ASCIIToUTF16("Tes"), lines[2]);
EXPECT_EQ(ASCIIToUTF16("t"), lines[3]);
// Word truncated, but not the first.
EXPECT_EQ(0, result_for_width("T Test", tes_width));
EXPECT_EQ(3u, lines.size());
EXPECT_EQ(ASCIIToUTF16("T"), lines[0]);
EXPECT_EQ(ASCIIToUTF16("Tes"), lines[1]);
EXPECT_EQ(ASCIIToUTF16("t"), lines[2]);
// Leading \n.
EXPECT_EQ(0, result_for_width("\nTest", tes_width));
EXPECT_EQ(3u, lines.size());
EXPECT_EQ(ASCIIToUTF16(""), lines[0]);
EXPECT_EQ(ASCIIToUTF16("Tes"), lines[1]);
EXPECT_EQ(ASCIIToUTF16("t"), lines[2]);
}
TEST(TextEliderTest, ElideRectangleTextPunctuation) {
const FontList font_list;
const int line_height = font_list.GetHeight();
const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
const float test_t_width = GetStringWidthF(ASCIIToUTF16("Test T"), font_list);
constexpr int kResultMask =
INSUFFICIENT_SPACE_HORIZONTAL | INSUFFICIENT_SPACE_VERTICAL;
struct TestData {
const char* input;
float available_pixel_width;
int available_pixel_height;
bool wrap_words;
bool truncated_x;
const char* output;
} cases[] = {
{ "Test T.", test_t_width, line_height * 2, false, false, "Test|T." },
{ "Test T ?", test_t_width, line_height * 2, false, false, "Test|T ?" },
{ "Test. Test", test_width, line_height * 3, false, true, "Test|Test" },
{ "Test. Test", test_width, line_height * 3, true, false, "Test|.|Test" },
};
for (size_t i = 0; i < base::size(cases); ++i) {
std::vector<base::string16> lines;
const WordWrapBehavior wrap_behavior =
(cases[i].wrap_words ? WRAP_LONG_WORDS : TRUNCATE_LONG_WORDS);
EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
ElideRectangleText(UTF8ToUTF16(cases[i].input), font_list,
cases[i].available_pixel_width,
cases[i].available_pixel_height, wrap_behavior,
&lines) &
kResultMask);
if (cases[i].output) {
const std::string result =
UTF16ToUTF8(base::JoinString(lines, base::ASCIIToUTF16("|")));
EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
} else {
EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
}
}
}
TEST(TextEliderTest, ElideRectangleTextLongWords) {
const FontList font_list;
const int kAvailableHeight = 1000;
const base::string16 kElidedTesting =
UTF8ToUTF16(std::string("Tes") + kEllipsis);
const float elided_width = GetStringWidthF(kElidedTesting, font_list);
const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
constexpr int kResultMask =
INSUFFICIENT_SPACE_HORIZONTAL | INSUFFICIENT_SPACE_VERTICAL;
struct TestData {
const char* input;
float available_pixel_width;
WordWrapBehavior wrap_behavior;
bool truncated_x;
const char* output;
} cases[] = {
{ "Testing", test_width, IGNORE_LONG_WORDS, false, "Testing" },
{ "X Testing", test_width, IGNORE_LONG_WORDS, false, "X|Testing" },
{ "Test Testing", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
{ "Test\nTesting", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
{ "Test Tests ", test_width, IGNORE_LONG_WORDS, false, "Test|Tests" },
{ "Test Tests T", test_width, IGNORE_LONG_WORDS, false, "Test|Tests|T" },
{ "Testing", elided_width, ELIDE_LONG_WORDS, true, "Tes..." },
{ "X Testing", elided_width, ELIDE_LONG_WORDS, true, "X|Tes..." },
{ "Test Testing", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
{ "Test\nTesting", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
{ "Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test" },
{ "X Testing", test_width, TRUNCATE_LONG_WORDS, true, "X|Test" },
{ "Test Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
{ "Test\nTesting", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
{ "Test Tests ", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
{ "Test Tests T", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test|T" },
{ "Testing", test_width, WRAP_LONG_WORDS, false, "Test|ing" },
{ "X Testing", test_width, WRAP_LONG_WORDS, false, "X|Test|ing" },
{ "Test Testing", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
{ "Test\nTesting", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
{ "Test Tests ", test_width, WRAP_LONG_WORDS, false, "Test|Test|s" },
{ "Test Tests T", test_width, WRAP_LONG_WORDS, false, "Test|Test|s T" },
{ "TestTestTest", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test" },
{ "TestTestTestT", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test|T" },
};
for (size_t i = 0; i < base::size(cases); ++i) {
std::vector<base::string16> lines;
EXPECT_EQ(
cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
ElideRectangleText(UTF8ToUTF16(cases[i].input), font_list,
cases[i].available_pixel_width, kAvailableHeight,
cases[i].wrap_behavior, &lines) &
kResultMask);
std::string expected_output(cases[i].output);
base::ReplaceSubstringsAfterOffset(&expected_output, 0, "...", kEllipsis);
const std::string result =
UTF16ToUTF8(base::JoinString(lines, base::ASCIIToUTF16("|")));
EXPECT_EQ(expected_output, result) << "Case " << i << " failed!";
}
}
// This test is to make sure that the width of each wrapped line does not
// exceed the available width. On some platform like Mac, this test used to
// fail because the truncated integer width is returned for the string
// and the accumulation of the truncated values causes the elide function
// to wrap incorrectly.
TEST(TextEliderTest, ElideRectangleTextCheckLineWidth) {
FontList font_list;
#if defined(OS_MAC)
// Use a specific font to expose the line width exceeding problem.
font_list = FontList(Font("LucidaGrande", 12));
#endif
const float kAvailableWidth = 235;
const int kAvailableHeight = 1000;
const char text[] = "that Russian place we used to go to after fencing";
std::vector<base::string16> lines;
EXPECT_EQ(0, ElideRectangleText(UTF8ToUTF16(text),
font_list,
kAvailableWidth,
kAvailableHeight,
WRAP_LONG_WORDS,
&lines));
ASSERT_EQ(2u, lines.size());
EXPECT_LE(GetStringWidthF(lines[0], font_list), kAvailableWidth);
EXPECT_LE(GetStringWidthF(lines[1], font_list), kAvailableWidth);
}
#if defined(OS_CHROMEOS)
// This test was created specifically to test a message from crbug.com/415213.
// It tests that width of concatenation of words equals sum of widths of the
// words.
TEST(TextEliderTest, ElideRectangleTextCheckConcatWidthEqualsSumOfWidths) {
FontList font_list;
font_list = FontList("Noto Sans UI,ui-sans, 12px");
SetFontRenderParamsDeviceScaleFactor(1.25f);
#define WIDTH(x) GetStringWidthF(UTF8ToUTF16(x), font_list)
EXPECT_EQ(WIDTH("The administrator for this account has"),
WIDTH("The ") + WIDTH("administrator ") + WIDTH("for ") +
WIDTH("this ") + WIDTH("account ") + WIDTH("has"));
#undef WIDTH
SetFontRenderParamsDeviceScaleFactor(1.0f);
}
#endif // defined(OS_CHROMEOS)
TEST(TextEliderTest, ElideRectangleString) {
struct TestData {
const char* input;
int max_rows;
int max_cols;
bool result;
const char* output;
} cases[] = {
{ "", 0, 0, false, "" },
{ "", 1, 1, false, "" },
{ "Hi, my name is\nTom", 0, 0, true, "..." },
{ "Hi, my name is\nTom", 1, 0, true, "\n..." },
{ "Hi, my name is\nTom", 0, 1, true, "..." },
{ "Hi, my name is\nTom", 1, 1, true, "H\n..." },
{ "Hi, my name is\nTom", 2, 1, true, "H\ni\n..." },
{ "Hi, my name is\nTom", 3, 1, true, "H\ni\n,\n..." },
{ "Hi, my name is\nTom", 4, 1, true, "H\ni\n,\n \n..." },
{ "Hi, my name is\nTom", 5, 1, true, "H\ni\n,\n \nm\n..." },
{ "Hi, my name is\nTom", 0, 2, true, "..." },
{ "Hi, my name is\nTom", 1, 2, true, "Hi\n..." },
{ "Hi, my name is\nTom", 2, 2, true, "Hi\n, \n..." },
{ "Hi, my name is\nTom", 3, 2, true, "Hi\n, \nmy\n..." },
{ "Hi, my name is\nTom", 4, 2, true, "Hi\n, \nmy\n n\n..." },
{ "Hi, my name is\nTom", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
{ "Hi, my name is\nTom", 0, 3, true, "..." },
{ "Hi, my name is\nTom", 1, 3, true, "Hi,\n..." },
{ "Hi, my name is\nTom", 2, 3, true, "Hi,\n my\n..." },
{ "Hi, my name is\nTom", 3, 3, true, "Hi,\n my\n na\n..." },
{ "Hi, my name is\nTom", 4, 3, true, "Hi,\n my\n na\nme \n..." },
{ "Hi, my name is\nTom", 5, 3, true, "Hi,\n my\n na\nme \nis\n..." },
{ "Hi, my name is\nTom", 1, 4, true, "Hi, \n..." },
{ "Hi, my name is\nTom", 2, 4, true, "Hi, \nmy n\n..." },
{ "Hi, my name is\nTom", 3, 4, true, "Hi, \nmy n\name \n..." },
{ "Hi, my name is\nTom", 4, 4, true, "Hi, \nmy n\name \nis\n..." },
{ "Hi, my name is\nTom", 5, 4, false, "Hi, \nmy n\name \nis\nTom" },
{ "Hi, my name is\nTom", 1, 5, true, "Hi, \n..." },
{ "Hi, my name is\nTom", 2, 5, true, "Hi, \nmy na\n..." },
{ "Hi, my name is\nTom", 3, 5, true, "Hi, \nmy na\nme \n..." },
{ "Hi, my name is\nTom", 4, 5, true, "Hi, \nmy na\nme \nis\n..." },
{ "Hi, my name is\nTom", 5, 5, false, "Hi, \nmy na\nme \nis\nTom" },
{ "Hi, my name is\nTom", 1, 6, true, "Hi, \n..." },
{ "Hi, my name is\nTom", 2, 6, true, "Hi, \nmy \n..." },
{ "Hi, my name is\nTom", 3, 6, true, "Hi, \nmy \nname \n..." },
{ "Hi, my name is\nTom", 4, 6, true, "Hi, \nmy \nname \nis\n..." },
{ "Hi, my name is\nTom", 5, 6, false, "Hi, \nmy \nname \nis\nTom" },
{ "Hi, my name is\nTom", 1, 7, true, "Hi, \n..." },
{ "Hi, my name is\nTom", 2, 7, true, "Hi, \nmy \n..." },
{ "Hi, my name is\nTom", 3, 7, true, "Hi, \nmy \nname \n..." },
{ "Hi, my name is\nTom", 4, 7, true, "Hi, \nmy \nname \nis\n..." },
{ "Hi, my name is\nTom", 5, 7, false, "Hi, \nmy \nname \nis\nTom" },
{ "Hi, my name is\nTom", 1, 8, true, "Hi, my \n..." },
{ "Hi, my name is\nTom", 2, 8, true, "Hi, my \nname \n..." },
{ "Hi, my name is\nTom", 3, 8, true, "Hi, my \nname \nis\n..." },
{ "Hi, my name is\nTom", 4, 8, false, "Hi, my \nname \nis\nTom" },
{ "Hi, my name is\nTom", 1, 9, true, "Hi, my \n..." },
{ "Hi, my name is\nTom", 2, 9, true, "Hi, my \nname is\n..." },
{ "Hi, my name is\nTom", 3, 9, false, "Hi, my \nname is\nTom" },
{ "Hi, my name is\nTom", 1, 10, true, "Hi, my \n..." },
{ "Hi, my name is\nTom", 2, 10, true, "Hi, my \nname is\n..." },
{ "Hi, my name is\nTom", 3, 10, false, "Hi, my \nname is\nTom" },
{ "Hi, my name is\nTom", 1, 11, true, "Hi, my \n..." },
{ "Hi, my name is\nTom", 2, 11, true, "Hi, my \nname is\n..." },
{ "Hi, my name is\nTom", 3, 11, false, "Hi, my \nname is\nTom" },
{ "Hi, my name is\nTom", 1, 12, true, "Hi, my \n..." },
{ "Hi, my name is\nTom", 2, 12, true, "Hi, my \nname is\n..." },
{ "Hi, my name is\nTom", 3, 12, false, "Hi, my \nname is\nTom" },
{ "Hi, my name is\nTom", 1, 13, true, "Hi, my name \n..." },
{ "Hi, my name is\nTom", 2, 13, true, "Hi, my name \nis\n..." },
{ "Hi, my name is\nTom", 3, 13, false, "Hi, my name \nis\nTom" },
{ "Hi, my name is\nTom", 1, 20, true, "Hi, my name is\n..." },
{ "Hi, my name is\nTom", 2, 20, false, "Hi, my name is\nTom" },
{ "Hi, my name is Tom", 1, 40, false, "Hi, my name is Tom" },
};
base::string16 output;
for (size_t i = 0; i < base::size(cases); ++i) {
EXPECT_EQ(cases[i].result,
ElideRectangleString(UTF8ToUTF16(cases[i].input),
cases[i].max_rows, cases[i].max_cols,
true, &output));
EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
}
}
TEST(TextEliderTest, ElideRectangleStringNotStrict) {
struct TestData {
const char* input;
int max_rows;
int max_cols;
bool result;
const char* output;
} cases[] = {
{ "", 0, 0, false, "" },
{ "", 1, 1, false, "" },
{ "Hi, my name_is\nDick", 0, 0, true, "..." },
{ "Hi, my name_is\nDick", 1, 0, true, "\n..." },
{ "Hi, my name_is\nDick", 0, 1, true, "..." },
{ "Hi, my name_is\nDick", 1, 1, true, "H\n..." },
{ "Hi, my name_is\nDick", 2, 1, true, "H\ni\n..." },
{ "Hi, my name_is\nDick", 3, 1, true, "H\ni\n,\n..." },
{ "Hi, my name_is\nDick", 4, 1, true, "H\ni\n,\n \n..." },
{ "Hi, my name_is\nDick", 5, 1, true, "H\ni\n,\n \nm\n..." },
{ "Hi, my name_is\nDick", 0, 2, true, "..." },
{ "Hi, my name_is\nDick", 1, 2, true, "Hi\n..." },
{ "Hi, my name_is\nDick", 2, 2, true, "Hi\n, \n..." },
{ "Hi, my name_is\nDick", 3, 2, true, "Hi\n, \nmy\n..." },
{ "Hi, my name_is\nDick", 4, 2, true, "Hi\n, \nmy\n n\n..." },
{ "Hi, my name_is\nDick", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
{ "Hi, my name_is\nDick", 0, 3, true, "..." },
{ "Hi, my name_is\nDick", 1, 3, true, "Hi,\n..." },
{ "Hi, my name_is\nDick", 2, 3, true, "Hi,\n my\n..." },
{ "Hi, my name_is\nDick", 3, 3, true, "Hi,\n my\n na\n..." },
{ "Hi, my name_is\nDick", 4, 3, true, "Hi,\n my\n na\nme_\n..." },
{ "Hi, my name_is\nDick", 5, 3, true, "Hi,\n my\n na\nme_\nis\n..." },
{ "Hi, my name_is\nDick", 1, 4, true, "Hi, ..." },
{ "Hi, my name_is\nDick", 2, 4, true, "Hi, my n\n..." },
{ "Hi, my name_is\nDick", 3, 4, true, "Hi, my n\name_\n..." },
{ "Hi, my name_is\nDick", 4, 4, true, "Hi, my n\name_\nis\n..." },
{ "Hi, my name_is\nDick", 5, 4, false, "Hi, my n\name_\nis\nDick" },
{ "Hi, my name_is\nDick", 1, 5, true, "Hi, ..." },
{ "Hi, my name_is\nDick", 2, 5, true, "Hi, my na\n..." },
{ "Hi, my name_is\nDick", 3, 5, true, "Hi, my na\nme_is\n..." },
{ "Hi, my name_is\nDick", 4, 5, true, "Hi, my na\nme_is\n\n..." },
{ "Hi, my name_is\nDick", 5, 5, false, "Hi, my na\nme_is\n\nDick" },
{ "Hi, my name_is\nDick", 1, 6, true, "Hi, ..." },
{ "Hi, my name_is\nDick", 2, 6, true, "Hi, my nam\n..." },
{ "Hi, my name_is\nDick", 3, 6, true, "Hi, my nam\ne_is\n..." },
{ "Hi, my name_is\nDick", 4, 6, false, "Hi, my nam\ne_is\nDick" },
{ "Hi, my name_is\nDick", 5, 6, false, "Hi, my nam\ne_is\nDick" },
{ "Hi, my name_is\nDick", 1, 7, true, "Hi, ..." },
{ "Hi, my name_is\nDick", 2, 7, true, "Hi, my name\n..." },
{ "Hi, my name_is\nDick", 3, 7, true, "Hi, my name\n_is\n..." },
{ "Hi, my name_is\nDick", 4, 7, false, "Hi, my name\n_is\nDick" },
{ "Hi, my name_is\nDick", 5, 7, false, "Hi, my name\n_is\nDick" },
{ "Hi, my name_is\nDick", 1, 8, true, "Hi, my n\n..." },
{ "Hi, my name_is\nDick", 2, 8, true, "Hi, my n\name_is\n..." },
{ "Hi, my name_is\nDick", 3, 8, false, "Hi, my n\name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 9, true, "Hi, my ..." },
{ "Hi, my name_is\nDick", 2, 9, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 3, 9, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 10, true, "Hi, my ..." },
{ "Hi, my name_is\nDick", 2, 10, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 3, 10, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 11, true, "Hi, my ..." },
{ "Hi, my name_is\nDick", 2, 11, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 3, 11, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 12, true, "Hi, my ..." },
{ "Hi, my name_is\nDick", 2, 12, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 3, 12, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 13, true, "Hi, my ..." },
{ "Hi, my name_is\nDick", 2, 13, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 3, 13, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is\nDick", 1, 20, true, "Hi, my name_is\n..." },
{ "Hi, my name_is\nDick", 2, 20, false, "Hi, my name_is\nDick" },
{ "Hi, my name_is Dick", 1, 40, false, "Hi, my name_is Dick" },
};
base::string16 output;
for (size_t i = 0; i < base::size(cases); ++i) {
EXPECT_EQ(cases[i].result,
ElideRectangleString(UTF8ToUTF16(cases[i].input),
cases[i].max_rows, cases[i].max_cols,
false, &output));
EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
}
}
TEST(TextEliderTest, ElideRectangleWide16) {
// Two greek words separated by space.
const base::string16 str(WideToUTF16(
L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2"));
const base::string16 out1(WideToUTF16(
L"\x03a0\x03b1\x03b3\x03ba\n"
L"\x03cc\x03c3\x03bc\x03b9\n"
L"..."));
const base::string16 out2(WideToUTF16(
L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9\x03bf\x03c2\x0020\n"
L"\x0399\x03c3\x03c4\x03cc\x03c2"));
base::string16 output;
EXPECT_TRUE(ElideRectangleString(str, 2, 4, true, &output));
EXPECT_EQ(out1, output);
EXPECT_FALSE(ElideRectangleString(str, 2, 12, true, &output));
EXPECT_EQ(out2, output);
}
TEST(TextEliderTest, ElideRectangleWide32) {
// Four U+1D49C MATHEMATICAL SCRIPT CAPITAL A followed by space "aaaaa".
const base::string16 str(UTF8ToUTF16(
"\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C"
" aaaaa"));
const base::string16 out(UTF8ToUTF16(
"\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\n"
"\xF0\x9D\x92\x9C \naaa\n..."));
base::string16 output;
EXPECT_TRUE(ElideRectangleString(str, 3, 3, true, &output));
EXPECT_EQ(out, output);
}
TEST(TextEliderTest, TruncateString) {
base::string16 str = ASCIIToUTF16("fooooey bxxxar baz ");
// Test breaking at character 0.
EXPECT_EQ(base::string16(), TruncateString(str, 0, WORD_BREAK));
EXPECT_EQ(base::string16(), TruncateString(str, 0, CHARACTER_BREAK));
// Test breaking at character 1.
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str, 1, WORD_BREAK)));
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str, 1, CHARACTER_BREAK)));
// Test breaking in the middle of the first word.
EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(str, 2, WORD_BREAK)));
EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(str, 2, CHARACTER_BREAK)));
// Test breaking in between words.
EXPECT_EQ(L"fooooey\x2026", UTF16ToWide(TruncateString(str, 9, WORD_BREAK)));
EXPECT_EQ(L"fooooey\x2026",
UTF16ToWide(TruncateString(str, 9, CHARACTER_BREAK)));
// Test breaking at the start of a later word.
EXPECT_EQ(L"fooooey\x2026", UTF16ToWide(TruncateString(str, 11, WORD_BREAK)));
EXPECT_EQ(L"fooooey\x2026",
UTF16ToWide(TruncateString(str, 11, CHARACTER_BREAK)));
// Test breaking in the middle of a word.
EXPECT_EQ(L"fooooey\x2026", UTF16ToWide(TruncateString(str, 12, WORD_BREAK)));
EXPECT_EQ(L"fooooey\x2026",
UTF16ToWide(TruncateString(str, 12, CHARACTER_BREAK)));
EXPECT_EQ(L"fooooey\x2026", UTF16ToWide(TruncateString(str, 14, WORD_BREAK)));
EXPECT_EQ(L"fooooey bx\x2026",
UTF16ToWide(TruncateString(str, 14, CHARACTER_BREAK)));
// Test breaking in whitespace at the end of the string.
EXPECT_EQ(L"fooooey bxxxar baz\x2026",
UTF16ToWide(TruncateString(str, 22, WORD_BREAK)));
EXPECT_EQ(L"fooooey bxxxar baz\x2026",
UTF16ToWide(TruncateString(str, 22, CHARACTER_BREAK)));
// Test breaking at the end of the string.
EXPECT_EQ(str, TruncateString(str, str.length(), WORD_BREAK));
EXPECT_EQ(str, TruncateString(str, str.length(), CHARACTER_BREAK));
// Test breaking past the end of the string.
EXPECT_EQ(str, TruncateString(str, str.length() + 10, WORD_BREAK));
EXPECT_EQ(str, TruncateString(str, str.length() + 10, CHARACTER_BREAK));
// Tests of strings with leading whitespace:
base::string16 str2 = ASCIIToUTF16(" foo");
// Test breaking in leading whitespace.
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 2, WORD_BREAK)));
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 2, CHARACTER_BREAK)));
// Test breaking at the beginning of the first word, with leading whitespace.
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 3, WORD_BREAK)));
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 3, CHARACTER_BREAK)));
// Test breaking in the middle of the first word, with leading whitespace.
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 4, WORD_BREAK)));
EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(str2, 4, CHARACTER_BREAK)));
EXPECT_EQ(L" f\x2026", UTF16ToWide(TruncateString(str2, 5, WORD_BREAK)));
EXPECT_EQ(L" f\x2026",
UTF16ToWide(TruncateString(str2, 5, CHARACTER_BREAK)));
}
} // namespace gfx