ls-standard-library/test/lib/googletest-1.8.1/googletest/test/googletest-color-test_.cc

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// A helper program for testing how Google Test determines whether to use
// colors in the output.  It prints "YES" and returns 1 if Google Test
// decides to use colors, and prints "NO" and returns 0 otherwise.

#include <stdio.h>

#include "gtest/gtest.h"
#include "src/gtest-internal-inl.h"

using testing::internal::ShouldUseColor;

// The purpose of this is to ensure that the UnitTest singleton is
// created before main() is entered, and thus that ShouldUseColor()
// works the same way as in a real Google-Test-based test.  We don't actual
// run the TEST itself.
TEST(GTestColorTest, Dummy) {
}

int main(int argc, char** argv) {
  testing::InitGoogleTest(&argc, argv);

  if (ShouldUseColor(true)) {
    // Google Test decides to use colors in the output (assuming it
    // goes to a TTY).
    printf("YES\n");
    return 1;
  } else {
    // Google Test decides not to use colors in the output.
    printf("NO\n");
    return 0;
  }
}