// Copyright 2020 The Dawn & Tint Authors
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#include "gmock/gmock.h"
#include "src/tint/lang/wgsl/ast/helper_test.h"
#include "src/tint/lang/wgsl/resolver/resolve.h"

namespace tint::ast {
namespace {

using ModuleTest = TestHelper;
using ModuleDeathTest = ModuleTest;

TEST_F(ModuleTest, Creation) {
    EXPECT_EQ(resolver::Resolve(*this).AST().Functions().Length(), 0u);
}

TEST_F(ModuleTest, LookupFunction) {
    auto* func = Func("main", {}, ty.f32(), {});

    Program program(std::move(*this));
    EXPECT_EQ(func, program.AST().Functions().Find(program.Symbols().Get("main")));
}

TEST_F(ModuleTest, LookupFunctionMissing) {
    Program program(std::move(*this));
    EXPECT_EQ(nullptr, program.AST().Functions().Find(program.Symbols().Get("Missing")));
}

TEST_F(ModuleDeathTest, Assert_Null_GlobalVariable) {
    EXPECT_DEATH_IF_SUPPORTED(
        {
            ProgramBuilder builder;
            builder.AST().AddGlobalVariable(nullptr);
        },
        "internal compiler error");
}

TEST_F(ModuleDeathTest, Assert_Null_TypeDecl) {
    EXPECT_DEATH_IF_SUPPORTED(
        {
            ProgramBuilder builder;
            builder.AST().AddTypeDecl(nullptr);
        },
        "internal compiler error");
}

TEST_F(ModuleDeathTest, Assert_Null_Function) {
    EXPECT_DEATH_IF_SUPPORTED(
        {
            ProgramBuilder builder;
            builder.AST().AddFunction(nullptr);
        },
        "internal compiler error");
}

TEST_F(ModuleTest, Directives) {
    auto* enable_1 = Enable(wgsl::Extension::kF16);
    auto* diagnostic_1 =
        DiagnosticDirective(wgsl::DiagnosticSeverity::kWarning, DiagnosticRuleName("foo"));
    auto* enable_2 = Enable(wgsl::Extension::kChromiumExperimentalPixelLocal);
    auto* diagnostic_2 =
        DiagnosticDirective(wgsl::DiagnosticSeverity::kOff, DiagnosticRuleName("bar"));

    Program program(std::move(*this));
    EXPECT_THAT(program.AST().GlobalDeclarations(), ::testing::ContainerEq(tint::Vector{
                                                        enable_1,
                                                        diagnostic_1,
                                                        enable_2,
                                                        diagnostic_2,
                                                    }));
    EXPECT_THAT(program.AST().Enables(), ::testing::ContainerEq(tint::Vector{
                                             enable_1,
                                             enable_2,
                                         }));
    EXPECT_THAT(program.AST().DiagnosticDirectives(), ::testing::ContainerEq(tint::Vector{
                                                          diagnostic_1,
                                                          diagnostic_2,
                                                      }));
}

}  // namespace
}  // namespace tint::ast
