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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package log
// These tests are too simple.
import (
"bufio"
"os"
"regexp"
"testing"
)
const (
Rdate = `[0-9][0-9][0-9][0-9]/[0-9][0-9]/[0-9][0-9]`
Rtime = `[0-9][0-9]:[0-9][0-9]:[0-9][0-9]`
Rmicroseconds = `\.[0-9][0-9][0-9][0-9][0-9][0-9]`
Rline = `(58|60):` // must update if the calls to l.Logf / l.Log below move
Rlongfile = `.*/[A-Za-z0-9_\-]+\.go:` + Rline
Rshortfile = `[A-Za-z0-9_\-]+\.go:` + Rline
)
type tester struct {
flag int
prefix string
pattern string // regexp that log output must match; we add ^ and expected_text$ always
}
var tests = []tester{
// individual pieces:
tester{0, "", ""},
tester{0, "XXX", "XXX"},
tester{Lok | Ldate, "", Rdate + " "},
tester{Lok | Ltime, "", Rtime + " "},
tester{Lok | Ltime | Lmicroseconds, "", Rtime + Rmicroseconds + " "},
tester{Lok | Lmicroseconds, "", Rtime + Rmicroseconds + " "}, // microsec implies time
tester{Lok | Llongfile, "", Rlongfile + " "},
tester{Lok | Lshortfile, "", Rshortfile + " "},
tester{Lok | Llongfile | Lshortfile, "", Rshortfile + " "}, // shortfile overrides longfile
// everything at once:
tester{Lok | Ldate | Ltime | Lmicroseconds | Llongfile, "XXX", "XXX" + Rdate + " " + Rtime + Rmicroseconds + " " + Rlongfile + " "},
tester{Lok | Ldate | Ltime | Lmicroseconds | Lshortfile, "XXX", "XXX" + Rdate + " " + Rtime + Rmicroseconds + " " + Rshortfile + " "},
}
// Test using Log("hello", 23, "world") or using Logf("hello %d world", 23)
func testLog(t *testing.T, flag int, prefix string, pattern string, useLogf bool) {
r, w, err1 := os.Pipe()
if err1 != nil {
t.Fatal("pipe", err1)
}
defer r.Close()
defer w.Close()
buf := bufio.NewReader(r)
l := New(w, nil, prefix, flag)
if useLogf {
l.Logf("hello %d world", 23)
} else {
l.Log("hello", 23, "world")
}
line, err3 := buf.ReadString('\n')
if err3 != nil {
t.Fatal("log error", err3)
}
line = line[0 : len(line)-1]
pattern = "^" + pattern + "hello 23 world$"
matched, err4 := regexp.MatchString(pattern, line)
if err4 != nil {
t.Fatal("pattern did not compile:", err4)
}
if !matched {
t.Errorf("log output should match %q is %q", pattern, line)
}
}
func TestAllLog(t *testing.T) {
for _, testcase := range tests {
testLog(t, testcase.flag, testcase.prefix, testcase.pattern, false)
testLog(t, testcase.flag, testcase.prefix, testcase.pattern, true)
}
}
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