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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
d12583fc08
I'm partly doing this because the current setup would be difficult to share with the toolchain. e.g., ProtoToCarbon isn't explorer-specific, but the only way to run it via CLI is the explorer's fuzzverter. I want a separate tool.
This change:
- Adds a //common/fuzzing:proto_to_carbon tool.
- The rest of fuzzverter is now just //explorer/fuzzing:ast_to_proto.
- The change simplifies overall handling and removes a LLVM CLI dependency.
- Stops allowing unknown fields in the proto.
- This has mostly led to forgetting to remove fuzzer inputs that were for removed features.
- Moves more non-explorer-specific bits to //common/fuzzing.
- Cleans up remaining pieces in //explorer/fuzzing
- Merges the //explorer/fuzzing proto tests, which deduplicates AstToString copies.
- These tests also had duplicate dependencies, etc -- and all complete in ~6s.
- Updates and fixes regen_corpus which was previously broken by other changes.
- Updates the README to reflect changes.
- Removes obsolete proto-fuzzer build configuration (AFAICT this is no longer needed).
74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "common/fuzzing/proto_to_carbon.h"
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "common/error.h"
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#include "common/fuzzing/carbon.pb.h"
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namespace Carbon::Testing {
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namespace {
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TEST(FuzzerUtilTest, ProtoToCarbon) {
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const ErrorOr<Fuzzing::Carbon> carbon_proto = ParseCarbonTextProto(R"(
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compilation_unit {
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package_statement { package_name: "P" }
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is_api: true
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declarations {
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function {
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name {
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name: "Main"
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}
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param_pattern {}
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return_term {
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kind: Expression
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type { int_type_literal {} }
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}
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body {
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statements {
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return_expression_statement {
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expression { int_literal { value: 0 } }
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}
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}
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}
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}
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}
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})");
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ASSERT_TRUE(carbon_proto.ok());
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static constexpr char SourceCode[] = R"(// Generated by proto_to_carbon.
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package P api;
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fn Main() -> i32
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{
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return 0;
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}
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)";
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EXPECT_THAT(ProtoToCarbon(*carbon_proto, /*maybe_add_main=*/false),
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testing::Eq(SourceCode));
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EXPECT_THAT(ProtoToCarbon(*carbon_proto, /*maybe_add_main=*/true),
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testing::Eq(SourceCode));
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}
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TEST(FuzzerUtilTest, ParseCarbonTextProtoWithUnknownField) {
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const ErrorOr<Fuzzing::Carbon> carbon_proto = ParseCarbonTextProto(R"(
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compilation_unit {
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garbage: "value"
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declarations {
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choice {
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name {
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name: "Ch"
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}
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}
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}
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})");
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ASSERT_FALSE(carbon_proto.ok());
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}
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} // namespace
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} // namespace Carbon::Testing
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