mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Ross-Perkins
f088a71cec
This is sufficient to convert remaining toolchain tests to file_test. %s and %t are currently used. While #2978 might use %T with lit, I think that's resolving a lit-specific issue that's not necessary when TEST_TMPDIR is readily available for any necessary operations (i.e., setting the working directory). With ARGS, I think it's feasible to switch to file_test without %T. Also adds documentation to file_test_base.h, which was starting to feel like a significant gap. This is not yet handled by autoupdate, but I'm eyeing that next.
120 lines
4.2 KiB
C++
120 lines
4.2 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 "explorer/parse_and_execute/parse_and_execute.h"
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#include "testing/file_test/file_test_base.h"
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#include "testing/util/test_raw_ostream.h"
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namespace Carbon::Testing {
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namespace {
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class ParseAndExecuteTestFile : public FileTestBase {
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public:
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explicit ParseAndExecuteTestFile(const std::filesystem::path& path,
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bool trace)
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: FileTestBase(path), trace_(trace) {}
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auto SetUp() -> void override {
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std::string path_str = path().string();
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llvm::StringRef path_ref = path_str;
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if (path_ref.find("trace_testdata") != llvm::StringRef::npos) {
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is_trace_test = true;
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}
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if (trace_) {
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if (path_ref.find("/limits/") != llvm::StringRef::npos) {
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GTEST_SKIP()
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<< "`limits` tests check for various limit conditions (such as an "
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"infinite loop). The tests collectively don't test tracing "
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"because it creates substantial additional overhead.";
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} else if (path_ref.endswith(
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"testdata/assoc_const/rewrite_large_type.carbon") ||
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path_ref.endswith(
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"testdata/linked_list/typed_linked_list.carbon")) {
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GTEST_SKIP() << "Expensive test to trace";
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}
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} else {
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if (is_trace_test) {
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GTEST_SKIP() << "`trace` tests only check for trace output.";
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}
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}
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}
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auto RunWithFiles(const llvm::SmallVector<llvm::StringRef>& test_args,
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const llvm::SmallVector<TestFile>& test_files,
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llvm::raw_pwrite_stream& stdout,
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llvm::raw_pwrite_stream& stderr) -> bool override {
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CARBON_CHECK(test_args.empty())
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<< "ARGS are not currently used in explorer's file_test.";
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if (test_files.size() != 1) {
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ADD_FAILURE() << "Only 1 file is supported: " << test_files.size()
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<< " provided";
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return false;
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}
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// Capture trace streaming, but only when in debug mode.
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TraceStream trace_stream;
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TestRawOstream trace_stream_ostream;
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if (trace_) {
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trace_stream.set_stream(is_trace_test ? &stdout : &trace_stream_ostream);
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trace_stream.set_allowed_phases({ProgramPhase::All});
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trace_stream.set_allowed_file_kinds({FileKind::Main});
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}
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// Set the location of the prelude.
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char* test_srcdir = getenv("TEST_SRCDIR");
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CARBON_CHECK(test_srcdir != nullptr);
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std::string prelude_path(test_srcdir);
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prelude_path += "/carbon/explorer/data/prelude.carbon";
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// Run the parse. Parser debug output is always off because it's difficult
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// to redirect.
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auto result = ParseAndExecute(
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prelude_path, test_files[0].filename, test_files[0].content,
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/*parser_debug=*/false, &trace_stream, &stdout);
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// This mirrors printing currently done by main.cpp.
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if (result.ok()) {
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stdout << "result: " << *result << "\n";
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} else {
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stderr << result.error() << "\n";
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}
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// Skip trace test check as they use stdout stream instead of
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// trace_stream_ostream
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if (trace_ && !is_trace_test) {
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EXPECT_FALSE(trace_stream_ostream.TakeStr().empty())
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<< "Tracing should always do something";
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}
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return result.ok();
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}
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auto GetDefaultArgs() -> llvm::SmallVector<std::string> override {
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return {};
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}
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private:
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bool trace_;
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bool is_trace_test = false;
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};
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} // namespace
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extern auto RegisterFileTests(
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const llvm::SmallVector<std::filesystem::path>& paths) -> void {
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ParseAndExecuteTestFile::RegisterTests(
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"ParseAndExecuteTestFile", paths, [](const std::filesystem::path& path) {
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return new ParseAndExecuteTestFile(path, /*trace=*/false);
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});
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ParseAndExecuteTestFile::RegisterTests("ParseAndExecuteTestFile.trace", paths,
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[](const std::filesystem::path& path) {
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return new ParseAndExecuteTestFile(
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path, /*trace=*/true);
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});
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}
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} // namespace Carbon::Testing
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