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#include "src/tint/lang/glsl/writer/ast_printer/helper_test.h"
#include "src/tint/lang/wgsl/ast/id_attribute.h"
#include "src/tint/lang/wgsl/ast/stage_attribute.h"

#include "gmock/gmock.h"

using ::testing::HasSubstr;

using namespace tint::core::number_suffixes;  // NOLINT

namespace tint::glsl::writer {
namespace {

using GlslASTPrinterTest_WorkgroupVar = TestHelper;

TEST_F(GlslASTPrinterTest_WorkgroupVar, Basic) {
    GlobalVar("wg", ty.f32(), core::AddressSpace::kWorkgroup);

    Func("main", tint::Empty, ty.void_(), Vector{Assign("wg", 1.2_f)},
         Vector{
             Stage(ast::PipelineStage::kCompute),
             WorkgroupSize(1_i),
         });
    ASTPrinter& gen = Build();
    gen.Generate();
    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
    EXPECT_THAT(gen.Result(), HasSubstr("shared float wg;\n"));
}

TEST_F(GlslASTPrinterTest_WorkgroupVar, Aliased) {
    auto* alias = Alias("F32", ty.f32());

    GlobalVar("wg", ty.Of(alias), core::AddressSpace::kWorkgroup);

    Func("main", tint::Empty, ty.void_(), Vector{Assign("wg", 1.2_f)},
         Vector{
             Stage(ast::PipelineStage::kCompute),
             WorkgroupSize(1_i),
         });
    ASTPrinter& gen = Build();
    gen.Generate();
    EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
    EXPECT_THAT(gen.Result(), HasSubstr("shared float wg;\n"));
}

}  // namespace
}  // namespace tint::glsl::writer