6f576d957e
These changes slighly modify the output of the unittests so that they better
match GTest, so that utilities that parse the expected output from GTest (such
as Android's unit test harness) can read the output from our unit tests.
This allows our unit tests to be run on Android devices.
Add very primitive command line parsing to:
- support --gtest_color=no to disable printing terminal colors.
- recognize --gtest_print_time and print the test time in milliseconds.
- most of our unit tests run on the order of microseconds, so its useful to
preserve the existing behavior. But upsteram GTest ONLY prints time tests
in milliseconds, and Android's atest expects to be able to parse exactly
that. Atest always passes --gtest_print_time. The word `took` is removed as
that also differs from upstream GTest, tripping up parsers.
- ignore other --gtest_* flags
Do so so that atest can parse the output correctly.
Print the test number count before
each run, so that atest can parse this value correctly.
Link: https://android-review.googlesource.com/c/platform/external/llvm-libc/+/3107252
Link: https://google.github.io/googletest/advanced.html#colored-terminal-output
Link: https://google.github.io/googletest/advanced.html#suppressing-the-elapsed-time
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
//===-- Main function for implementation of base class for libc unittests -===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "LibcTest.h"
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#include "src/__support/CPP/string_view.h"
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using LIBC_NAMESPACE::cpp::string_view;
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using LIBC_NAMESPACE::testing::TestOptions;
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namespace {
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// A poor-man's getopt_long.
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// Run unit tests with --gtest_color=no to disable printing colors, or
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// --gtest_print_time to print timings in milliseconds only (as GTest does, so
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// external tools such as Android's atest may expect that format to parse the
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// output). Other command line flags starting with --gtest_ are ignored.
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// Otherwise, the last command line arg is used as a test filter, if command
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// line args are specified.
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TestOptions parseOptions(int argc, char **argv) {
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TestOptions Options;
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for (int i = 1; i < argc; ++i) {
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string_view arg{argv[i]};
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if (arg == "--gtest_color=no")
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Options.PrintColor = false;
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else if (arg == "--gtest_print_time")
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Options.TimeInMs = true;
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// Ignore other unsupported gtest specific flags.
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else if (arg.starts_with("--gtest_"))
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continue;
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else
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Options.TestFilter = argv[i];
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}
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return Options;
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}
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} // anonymous namespace
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extern "C" int main(int argc, char **argv, char **envp) {
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LIBC_NAMESPACE::testing::argc = argc;
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LIBC_NAMESPACE::testing::argv = argv;
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LIBC_NAMESPACE::testing::envp = envp;
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return LIBC_NAMESPACE::testing::Test::runTests(parseOptions(argc, argv));
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}
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