// Copyright 2020 The Dawn & Tint Authors
//
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// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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//    this list of conditions and the following disclaimer in the documentation
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// 3. Neither the name of the copyright holder nor the names of its
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#include "gmock/gmock.h"
#include "src/tint/lang/wgsl/writer/ast_printer/helper_test.h"

namespace tint::wgsl::writer {
namespace {

using WgslASTPrinterTest = TestHelper;

TEST_F(WgslASTPrinterTest, EmitAlias_F32) {
    auto* alias = Alias("a", ty.f32());

    ASTPrinter& gen = Build();
    gen.EmitTypeDecl(alias);

    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
    EXPECT_EQ(gen.Result(), R"(alias a = f32;
)");
}

TEST_F(WgslASTPrinterTest, EmitTypeDecl_Struct) {
    auto* s = Structure("A", Vector{
                                 Member("a", ty.f32()),
                                 Member("b", ty.i32()),
                             });

    auto* alias = Alias("B", ty.Of(s));

    ASTPrinter& gen = Build();
    gen.EmitTypeDecl(s);
    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());

    gen.EmitTypeDecl(alias);
    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
    EXPECT_EQ(gen.Result(), R"(struct A {
  a : f32,
  b : i32,
}
alias B = A;
)");
}

TEST_F(WgslASTPrinterTest, EmitAlias_ToStruct) {
    auto* s = Structure("A", Vector{
                                 Member("a", ty.f32()),
                                 Member("b", ty.i32()),
                             });

    auto* alias = Alias("B", ty.Of(s));

    ASTPrinter& gen = Build();

    gen.EmitTypeDecl(alias);
    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
    EXPECT_EQ(gen.Result(), R"(alias B = A;
)");
}

}  // namespace
}  // namespace tint::wgsl::writer
