mv tmlibs files to libs dir

libs/log/testing_logger.go

@@ -0,0 +1,49 @@
+package log
+
+import (
+	"os"
+	"testing"
+
+	"github.com/go-kit/kit/log/term"
+)
+
+var (
+	// reuse the same logger across all tests
+	_testingLogger Logger
+)
+
+// TestingLogger returns a TMLogger which writes to STDOUT if testing being run
+// with the verbose (-v) flag, NopLogger otherwise.
+//
+// Note that the call to TestingLogger() must be made
+// inside a test (not in the init func) because
+// verbose flag only set at the time of testing.
+func TestingLogger() Logger {
+	if _testingLogger != nil {
+		return _testingLogger
+	}
+
+	if testing.Verbose() {
+		_testingLogger = NewTMLogger(NewSyncWriter(os.Stdout))
+	} else {
+		_testingLogger = NewNopLogger()
+	}
+
+	return _testingLogger
+}
+
+// TestingLoggerWithColorFn allow you to provide your own color function. See
+// TestingLogger for documentation.
+func TestingLoggerWithColorFn(colorFn func(keyvals ...interface{}) term.FgBgColor) Logger {
+	if _testingLogger != nil {
+		return _testingLogger
+	}
+
+	if testing.Verbose() {
+		_testingLogger = NewTMLoggerWithColorFn(NewSyncWriter(os.Stdout), colorFn)
+	} else {
+		_testingLogger = NewNopLogger()
+	}
+
+	return _testingLogger
+}