src/tint/utils/text/text_style_test.cc

// Copyright 2024 The Dawn & Tint Authors
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#include "src/tint/utils/text/text_style.h"

#include "gtest/gtest.h"

namespace tint {
namespace {

using TextStyleTest = testing::Test;

TEST_F(TextStyleTest, Add) {
    // Plain + X = X
    EXPECT_EQ(style::Plain + style::Plain, style::Plain);
    EXPECT_EQ(style::Plain + style::Bold, style::Bold);
    EXPECT_EQ(style::Plain + style::Underlined, style::Underlined);
    EXPECT_EQ(style::Plain + style::Success, style::Success);
    EXPECT_EQ(style::Plain + style::Warning, style::Warning);
    EXPECT_EQ(style::Plain + style::Error, style::Error);
    EXPECT_EQ(style::Plain + style::Fatal, style::Fatal);
    EXPECT_EQ(style::Plain + style::Code, style::Code);
    EXPECT_EQ(style::Plain + style::Keyword, style::Keyword);
    EXPECT_EQ(style::Plain + style::Variable, style::Variable);
    EXPECT_EQ(style::Plain + style::Type, style::Type);
    EXPECT_EQ(style::Plain + style::Function, style::Function);
    EXPECT_EQ(style::Plain + style::Enum, style::Enum);
    EXPECT_EQ(style::Plain + style::Literal, style::Literal);
    EXPECT_EQ(style::Plain + style::Attribute, style::Attribute);
    EXPECT_EQ(style::Plain + style::Squiggle, style::Squiggle);

    // Non-colliding combinations
    EXPECT_EQ(style::Bold + style::Underlined, style::Bold + style::Underlined);
    EXPECT_EQ(style::Underlined + style::Success, style::Underlined + style::Success);
    EXPECT_EQ(style::Type + style::Error, style::Type + style::Error);
    EXPECT_EQ(style::Bold + style::Underlined + style::Variable + style::Squiggle,
              style::Bold + style::Underlined + style::Variable + style::Squiggle);

    // Colliding combinations resolve to RHS
    EXPECT_EQ(style::Error + style::Warning, style::Warning);
    EXPECT_EQ(style::Warning + style::Error, style::Error);
    EXPECT_EQ(style::Variable + style::Attribute + style::Type, style::Type);
}

}  // namespace
}  // namespace tint