109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
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package mlog
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import (
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"bytes"
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"io"
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"io/ioutil"
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"regexp"
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. "testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestTruncate(t *T) {
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assert.Equal(t, "abc", Truncate("abc", 4))
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assert.Equal(t, "abc", Truncate("abc", 3))
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assert.Equal(t, "ab...", Truncate("abc", 2))
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}
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func TestKV(t *T) {
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var kv KV
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assert.NotNil(t, kv.KV())
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assert.Empty(t, kv.KV())
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kv = KV{"foo": "a"}
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kv2 := KV(kv.KV())
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kv["bar"] = "b"
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kv2["bar"] = "bb"
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assert.Equal(t, KV{"foo": "a", "bar": "b"}, kv)
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assert.Equal(t, KV{"foo": "a", "bar": "bb"}, kv2)
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kv = KV{"foo": "a"}
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kv2 = kv.Set("bar", "wat")
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assert.Equal(t, KV{"foo": "a"}, kv)
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assert.Equal(t, KV{"foo": "a", "bar": "wat"}, kv2)
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assert.Equal(t, KV{"foo": "a", "bar": "b"}, Merge(
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KV{"foo": "aaaaa"},
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KV{"foo": "a", "bar": "bbbbb"},
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KV{"bar": "b"},
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))
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}
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func TestLLog(t *T) {
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buf := new(bytes.Buffer)
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l := &Logger{
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WriteCloser: struct {
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io.Writer
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io.Closer
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}{
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Writer: buf,
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Closer: ioutil.NopCloser(nil),
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},
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testMsgWrittenCh: make(chan struct{}, 10),
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}
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assertOut := func(expected string) {
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select {
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case <-l.testMsgWrittenCh:
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case <-time.After(1 * time.Second):
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t.Fatal("waited too long for msg to write")
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}
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out, err := buf.ReadString('\n')
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require.NoError(t, err)
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assert.Equal(t, expected, out)
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}
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// Default max level should be INFO
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l.Log(DebugLevel, "foo")
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l.Log(InfoLevel, "bar")
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l.Log(WarnLevel, "baz")
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l.Log(ErrorLevel, "buz")
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assertOut("~ INFO -- bar\n")
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assertOut("~ WARN -- baz\n")
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assertOut("~ ERROR -- buz\n")
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l.SetMaxLevel(WarnLevel)
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l.Log(DebugLevel, "foo")
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l.Log(InfoLevel, "bar")
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l.Log(WarnLevel, "baz")
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l.Log(ErrorLevel, "buz", KV{"a": "b"})
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assertOut("~ WARN -- baz\n")
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assertOut("~ ERROR -- buz -- a=\"b\"\n")
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}
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func TestDefaultWriteFn(t *T) {
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assertFormat := func(postfix string, msg Message) {
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expectedRegex := regexp.MustCompile(`^~ ` + postfix + `\n$`)
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buf := bytes.NewBuffer(make([]byte, 0, 128))
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assert.NoError(t, DefaultWriteFn(buf, msg))
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line, err := buf.ReadString('\n')
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require.NoError(t, err)
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assert.True(t, expectedRegex.MatchString(line), "regex: %q line: %q", expectedRegex.String(), line)
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}
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msg := Message{Level: InfoLevel, Msg: "this is a test"}
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assertFormat("INFO -- this is a test", msg)
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msg.KV = KV{}.KV()
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assertFormat("INFO -- this is a test", msg)
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msg.KV = KV{"foo": "a"}.KV()
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assertFormat("INFO -- this is a test -- foo=\"a\"", msg)
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msg.KV = KV{"foo": "a", "bar": "b"}.KV()
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assertFormat("INFO -- this is a test -- bar=\"b\" foo=\"a\"", msg)
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}
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