Files
carbon-lang/common/vlog_test.cpp
T
Jon Ross-Perkins de57c9988c Break out driver environment info into its own type. (#4299)
I want to split commands out so that we don't keep piling onto driver
(particularly as I'm eyeing clang-related commands). This extracts out
the DriverEnv so that it can be easily shared, with the CompilationUnit
as an example.

CARBON_VLOG_TO is to remove the vlog_stream_ requirement of CARBON_VLOG.
2024-09-12 00:06:31 +00:00

62 lines
1.4 KiB
C++

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "common/vlog.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "testing/base/test_raw_ostream.h"
namespace Carbon::Testing {
namespace {
using ::testing::IsEmpty;
using ::testing::StrEq;
// Helper class with a vlog_stream_ member for CARBON_VLOG.
class VLogger {
public:
explicit VLogger(bool enable) {
if (enable) {
vlog_stream_ = &buffer_;
}
}
void VLog() { CARBON_VLOG("Test\n"); }
void VLogFormatArgs() { CARBON_VLOG("Test {0} {1} {2}\n", 1, 2, 3); }
auto TakeStr() -> std::string { return buffer_.TakeStr(); }
private:
TestRawOstream buffer_;
llvm::raw_ostream* vlog_stream_ = nullptr;
};
TEST(VLogTest, Enabled) {
VLogger vlog(/*enable=*/true);
vlog.VLog();
EXPECT_THAT(vlog.TakeStr(), StrEq("Test\n"));
vlog.VLogFormatArgs();
EXPECT_THAT(vlog.TakeStr(), StrEq("Test 1 2 3\n"));
}
TEST(VLogTest, Disabled) {
VLogger vlog(/*enable=*/false);
vlog.VLog();
EXPECT_THAT(vlog.TakeStr(), IsEmpty());
}
TEST(VLogTest, To) {
TestRawOstream buffer;
CARBON_VLOG_TO(&buffer, "Test");
EXPECT_THAT(buffer.TakeStr(), "Test");
}
TEST(VLogTest, ToNull) { CARBON_VLOG_TO(nullptr, "Unused"); }
} // namespace
} // namespace Carbon::Testing