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testlogging.go
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testlogging.go
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// Copyright 2019 Twitch Interactive, Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may not
// use this file except in compliance with the License. A copy of the License is
// located at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// or in the "license" file accompanying this file. This file is distributed on
// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
package twirptest
import (
"log"
"testing"
)
// testLogger creates a *log.Logger that writes log messages to the test's
// output. This makes log messages appear only if the test fails, and makes them
// align correctly for nested subtests.
func testLogger(t *testing.T) *log.Logger {
return log.New(testWriter{t}, "", log.LstdFlags)
}
type testWriter struct{ t *testing.T }
func (w testWriter) Write(p []byte) (int, error) {
w.t.Log(string(p))
return len(p), nil
}