// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License 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 log_test

import (
	"bytes"
	"errors"
	"testing"

	"android.googlesource.com/platform/tools/gpu/framework/log"
)

var greetingError = errors.New("greeting")

func TestHelpers(t *testing.T) {
	buf := &bytes.Buffer{}
	ctx := log.Background().PreFilter(log.NoLimit).Filter(log.Pass).Handler(log.Writer(log.Normal, buf)).
		Recorder(log.StacktraceOnError).StackFilter(LogTestStackFilter)
	expect := func(s string) {
		got := buf.String()
		buf.Reset()
		if s != got {
			t.Errorf("Got %v expected %v", got, s)
		}
	}
	ctx.Emergency().Log("Hello")
	expect("Emergency:log_test.go:38:Hello\n")
	ctx.Alert().Log("Hello")
	expect("Alert:log_test.go:40:Hello\n")
	ctx.Critical().Log("Hello")
	expect("Critical:log_test.go:42:Hello\n")
	ctx.Error().Log("Hello")
	expect("Error:log_test.go:44:Hello\n")
	ctx.Fail(greetingError, "Hello")
	expect("Error:log_test.go:46:Failed:Hello<greeting>\n")
	ctx.Cause(greetingError).Critical().Log("Goodbye")
	expect("Critical:log_test.go:48:Failed:Goodbye<greeting>\n")
	ctx.Warning().Log("Hello")
	expect("Warning:Hello\n")
	ctx.Notice().Log("Hello")
	expect("Notice:Hello\n")
	ctx.Print("Hello")
	expect("Info:Hello\n")
	ctx.Debug().Log("Hello")
	expect("Debug:Hello\n")

	ctx.Info().S("string", "one").I("int", 1).F("float", 1.0).Log("Hello")
	expect("Info:Hello:string=one,int=1,float=1\n")
	ctx.S("string", "one").I("int", 1).F("float", 1.0).Info().Log("Hello")
	expect("Info:Hello:string=one,int=1,float=1\n")

	v := errors.New("test")
	ctx.Info().V("value", v).T("type", v).Log("Hello")
	expect("Info:Hello:value=test,type=*errors.errorString\n")
	ctx.V("value", v).T("type", v).Info().Log("Hello")
	expect("Info:Hello:value=test,type=*errors.errorString\n")

	ctx.Info().Tag("a_tag").Log("Hello")
	expect("Info:a_tag:Hello\n")
	ctx.Tag("b_tag").Info().Log("Hello")
	expect("Info:b_tag:Hello\n")
}

func LogTestStackFilter(entry *log.StackEntry) bool {
	return entry.Package != "android.googlesource.com/platform/tools/gpu/framework/log_test"
}