logger

var (
	// Default is the default logger that is used for the Logf function, if no one is provided. It uses the
	// TerratestLogger to log messages. This can be overwritten to change the logging globally.
	Default = New(terratestLogger{})
	// Discard discards all logging.
	Discard = New(discardLogger{})
	// Terratest logs the given format and arguments, formatted using fmt.Sprintf, to stdout, along with a timestamp and
	// information about what test and file is doing the logging. Before Go 1.14, this is an alternative to t.Logf as it
	// logs to stdout immediately, rather than buffering all log output and only displaying it at the very end of the test.
	// This is useful because:
	//
	// 1. It allows you to iterate faster locally, as you get feedback on whether your code changes are working as expected
	//    right away, rather than at the very end of the test run.
	//
	// 2. If you have a bug in your code that causes a test to never complete or if the test code crashes, t.Logf would
	//    show you no log output whatsoever, making debugging very hard, where as this method will show you all the log
	//    output available.
	//
	// 3. If you have a test that takes a long time to complete, some CI systems will kill the test suite prematurely
	//    because there is no log output with t.Logf (e.g., CircleCI kills tests after 10 minutes of no log output). With
	//    this log method, you get log output continuously.
	//
	Terratest = New(terratestLogger{})
	// TestingT can be used to use Go's testing.T to log. If this is used, but no testing.T is provided, it will fallback
	// to Default.
	TestingT = New(testingT{})
)

var MutexStdout sync.Mutex