third_party/blink/renderer/core/css/parser/css_parser_local_context_test.cc

// Copyright 2018 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.

#include "third_party/blink/renderer/core/css/parser/css_parser_local_context.h"

#include "testing/gtest/include/gtest/gtest.h"

namespace blink {

using VariableMode = CSSParserLocalContext::VariableMode;

TEST(CSSParserLocalContextTest, Constructor) {
  EXPECT_FALSE(CSSParserLocalContext().UseAliasParsing());
  EXPECT_FALSE(CSSParserLocalContext().IsAnimationTainted());
  EXPECT_EQ(CSSPropertyInvalid, CSSParserLocalContext().CurrentShorthand());
  EXPECT_EQ(VariableMode::kTyped, CSSParserLocalContext().GetVariableMode());
}

TEST(CSSParserLocalContextTest, WithAliasParsing) {
  const CSSParserLocalContext context;
  EXPECT_FALSE(context.WithAliasParsing(false).UseAliasParsing());
  EXPECT_TRUE(context.WithAliasParsing(true).UseAliasParsing());
}

TEST(CSSParserLocalContextTest, WithAnimationTainted) {
  const CSSParserLocalContext context;
  EXPECT_FALSE(context.WithAnimationTainted(false).IsAnimationTainted());
  EXPECT_TRUE(context.WithAnimationTainted(true).IsAnimationTainted());
}

TEST(CSSParserLocalContextTest, WithCurrentShorthand) {
  const CSSParserLocalContext context;
  const CSSPropertyID shorthand = CSSPropertyBackground;
  EXPECT_EQ(shorthand,
            context.WithCurrentShorthand(shorthand).CurrentShorthand());
}

TEST(CSSParserLocalContextTest, WithVariableMode) {
  auto mode = VariableMode::kUntyped;
  auto context = CSSParserLocalContext().WithVariableMode(mode);
  EXPECT_EQ(mode, context.GetVariableMode());
}

TEST(CSSParserLocalContextTest, LocalMutation) {
  CSSParserLocalContext context;
  context = context.WithAliasParsing(true);
  context = context.WithAnimationTainted(true);
  context = context.WithCurrentShorthand(CSSPropertyBackground);
  context = context.WithVariableMode(VariableMode::kUntyped);

  // WithAliasParsing only changes that member.
  {
    auto local_context = context.WithAliasParsing(false);
    EXPECT_FALSE(local_context.UseAliasParsing());
    EXPECT_EQ(CSSPropertyBackground, local_context.CurrentShorthand());
    EXPECT_TRUE(local_context.IsAnimationTainted());
    EXPECT_EQ(VariableMode::kUntyped, local_context.GetVariableMode());
  }

  // WithAnimationTainted only changes that member.
  {
    auto local_context = context.WithAnimationTainted(false);
    EXPECT_TRUE(local_context.UseAliasParsing());
    EXPECT_EQ(CSSPropertyBackground, local_context.CurrentShorthand());
    EXPECT_FALSE(local_context.IsAnimationTainted());
    EXPECT_EQ(VariableMode::kUntyped, local_context.GetVariableMode());
  }

  // WithCurrentShorthand only changes that member.
  {
    auto local_context = context.WithCurrentShorthand(CSSPropertyPadding);
    EXPECT_TRUE(local_context.UseAliasParsing());
    EXPECT_EQ(CSSPropertyPadding, local_context.CurrentShorthand());
    EXPECT_TRUE(local_context.IsAnimationTainted());
    EXPECT_EQ(VariableMode::kUntyped, local_context.GetVariableMode());
  }

  // WithVariableMode only changes that member.
  {
    auto local_context = context.WithVariableMode(VariableMode::kTyped);
    EXPECT_TRUE(local_context.UseAliasParsing());
    EXPECT_EQ(CSSPropertyBackground, local_context.CurrentShorthand());
    EXPECT_TRUE(local_context.IsAnimationTainted());
    EXPECT_EQ(VariableMode::kTyped, local_context.GetVariableMode());
  }
}

}  // namespace blink