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// Copyright 2023 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/lang/wgsl/reader/parser/helper_test.h"
namespace tint::wgsl::reader {
namespace {
using RequiresDirectiveTest = WGSLParserTest;
// Test a valid require directive.
// There currently are no valid require directives
TEST_F(RequiresDirectiveTest, DISABLED_Valid) {
auto p = parser("requires <sometime>;");
p->requires_directive();
EXPECT_FALSE(p->has_error()) << p->error();
}
// Test an unknown require identifier.
TEST_F(RequiresDirectiveTest, InvalidIdentifier) {
auto p = parser("requires NotAValidRequireName;");
p->requires_directive();
// Error when unknown require found
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), R"(1:10: feature 'NotAValidRequireName' is not supported)");
}
// Test the special error message when require are used with parenthesis.
TEST_F(RequiresDirectiveTest, ParenthesisSpecialCase) {
auto p = parser("requires(Something);");
p->translation_unit();
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:9: requires directives don't take parenthesis");
}
// Test using invalid tokens in an require directive.
TEST_F(RequiresDirectiveTest, InvalidTokens) {
{
auto p = parser("requires <Something;");
p->translation_unit();
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), R"(1:10: invalid feature name for requires)");
}
{
auto p = parser("requires =;");
p->translation_unit();
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), R"(1:10: invalid feature name for requires)");
}
{
auto p = parser("requires;");
p->translation_unit();
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), R"(1:9: missing feature names in requires directive)");
}
}
} // namespace
} // namespace tint::wgsl::reader