| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/v8.h" |
| |
| #include "src/objects.h" |
| #include "src/source-position-table.h" |
| #include "test/unittests/test-utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| class SourcePositionTableTest : public TestWithIsolate { |
| public: |
| SourcePositionTableTest() = default; |
| ~SourcePositionTableTest() override = default; |
| |
| SourcePosition toPos(int offset) { |
| return SourcePosition(offset, offset % 10 - 1); |
| } |
| }; |
| |
| // Some random offsets, mostly at 'suspicious' bit boundaries. |
| static int offsets[] = {0, 1, 2, 3, 4, 30, 31, 32, |
| 33, 62, 63, 64, 65, 126, 127, 128, |
| 129, 250, 1000, 9999, 12000, 31415926}; |
| |
| TEST_F(SourcePositionTableTest, EncodeStatement) { |
| SourcePositionTableBuilder builder; |
| for (size_t i = 0; i < arraysize(offsets); i++) { |
| builder.AddPosition(offsets[i], toPos(offsets[i]), true); |
| } |
| |
| // To test correctness, we rely on the assertions in ToSourcePositionTable(). |
| // (Also below.) |
| CHECK(!builder.ToSourcePositionTable(isolate()).is_null()); |
| } |
| |
| TEST_F(SourcePositionTableTest, EncodeStatementDuplicates) { |
| SourcePositionTableBuilder builder; |
| for (size_t i = 0; i < arraysize(offsets); i++) { |
| builder.AddPosition(offsets[i], toPos(offsets[i]), true); |
| builder.AddPosition(offsets[i], toPos(offsets[i] + 1), true); |
| } |
| |
| // To test correctness, we rely on the assertions in ToSourcePositionTable(). |
| // (Also below.) |
| CHECK(!builder.ToSourcePositionTable(isolate()).is_null()); |
| } |
| |
| TEST_F(SourcePositionTableTest, EncodeExpression) { |
| SourcePositionTableBuilder builder; |
| for (size_t i = 0; i < arraysize(offsets); i++) { |
| builder.AddPosition(offsets[i], toPos(offsets[i]), false); |
| } |
| CHECK(!builder.ToSourcePositionTable(isolate()).is_null()); |
| } |
| |
| TEST_F(SourcePositionTableTest, EncodeAscending) { |
| SourcePositionTableBuilder builder; |
| |
| int code_offset = 0; |
| int source_position = 0; |
| for (size_t i = 0; i < arraysize(offsets); i++) { |
| code_offset += offsets[i]; |
| source_position += offsets[i]; |
| if (i % 2) { |
| builder.AddPosition(code_offset, toPos(source_position), true); |
| } else { |
| builder.AddPosition(code_offset, toPos(source_position), false); |
| } |
| } |
| |
| // Also test negative offsets for source positions: |
| for (size_t i = 0; i < arraysize(offsets); i++) { |
| code_offset += offsets[i]; |
| source_position -= offsets[i]; |
| if (i % 2) { |
| builder.AddPosition(code_offset, toPos(source_position), true); |
| } else { |
| builder.AddPosition(code_offset, toPos(source_position), false); |
| } |
| } |
| |
| CHECK(!builder.ToSourcePositionTable(isolate()).is_null()); |
| } |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |