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#include "src/tint/lang/wgsl/reader/parser/helper_test.h"

namespace tint::wgsl::reader {
namespace {

TEST_F(WGSLParserTest, AttributeDecl_EmptyStr) {
    auto p = parser("");
    auto attrs = p->attribute_list();
    EXPECT_FALSE(p->has_error());
    EXPECT_FALSE(attrs.errored);
    EXPECT_FALSE(attrs.matched);
    EXPECT_EQ(attrs.value.Length(), 0u);
}

TEST_F(WGSLParserTest, AttributeDecl_Single) {
    auto p = parser("@size(4)");
    auto attrs = p->attribute_list();
    EXPECT_FALSE(p->has_error());
    EXPECT_FALSE(attrs.errored);
    EXPECT_TRUE(attrs.matched);
    ASSERT_EQ(attrs.value.Length(), 1u);
    auto* attr = attrs.value[0]->As<ast::Attribute>();
    ASSERT_NE(attr, nullptr);
    EXPECT_TRUE(attr->Is<ast::StructMemberSizeAttribute>());
}

TEST_F(WGSLParserTest, AttributeDecl_InvalidAttribute) {
    auto p = parser("@size(if)");
    auto attrs = p->attribute_list();
    EXPECT_TRUE(p->has_error()) << p->error();
    EXPECT_TRUE(attrs.errored);
    EXPECT_FALSE(attrs.matched);
    EXPECT_EQ(p->error(), "1:7: expected expression for size");
}

}  // namespace
}  // namespace tint::wgsl::reader