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81 lines (69 loc) · 2.62 KB
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// Copyright 2026 Google LLC
//
// 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
//
// https://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 "validator/ast_depth_validator.h"
#include <memory>
#include <utility>
#include "absl/log/absl_check.h"
#include "checker/type_check_issue.h"
#include "compiler/compiler.h"
#include "compiler/compiler_factory.h"
#include "compiler/standard_library.h"
#include "internal/testing.h"
#include "internal/testing_descriptor_pool.h"
#include "validator/validator.h"
namespace cel {
namespace {
std::unique_ptr<Compiler> CreateCompiler() {
auto builder = NewCompilerBuilder(internal::GetSharedTestingDescriptorPool());
ABSL_CHECK_OK(builder);
ABSL_CHECK_OK((*builder)->AddLibrary(StandardCompilerLibrary()));
auto compiler = (*builder)->Build();
ABSL_CHECK_OK(compiler);
return *std::move(compiler);
}
TEST(AstDepthValidatorTest, Basic) {
auto compiler = CreateCompiler();
ASSERT_OK_AND_ASSIGN(auto result, compiler->Compile("1 + 2 + 3"));
Validator validator;
validator.AddValidation(AstDepthValidator(10));
auto output = validator.Validate(*result.GetAst());
EXPECT_TRUE(output.valid);
Validator validator2;
validator2.AddValidation(AstDepthValidator(2));
output = validator2.Validate(*result.GetAst());
EXPECT_FALSE(output.valid);
EXPECT_THAT(output.issues,
testing::Contains(testing::Property(
&TypeCheckIssue::message,
testing::Eq("AST depth 3 exceeds maximum of 2"))));
}
TEST(AstDepthValidatorTest, Nested) {
auto compiler = CreateCompiler();
ASSERT_OK_AND_ASSIGN(auto result,
compiler->Compile("1 + (2 + (3 + (4 + 5)))"));
Validator validator;
validator.AddValidation(AstDepthValidator(10));
auto output = validator.Validate(*result.GetAst());
EXPECT_TRUE(output.valid);
Validator validator2;
validator2.AddValidation(AstDepthValidator(4));
output = validator2.Validate(*result.GetAst());
EXPECT_FALSE(output.valid);
EXPECT_THAT(output.issues,
testing::Contains(testing::Property(
&TypeCheckIssue::message,
testing::Eq("AST depth 5 exceeds maximum of 4"))));
}
} // namespace
} // namespace cel