add start to a logging package.

R=rsc
DELTA=205  (205 added, 0 deleted, 0 changed)
OCL=23448
CL=23478

1 files changed, 70 insertions, 0 deletions

diff --git a/src/lib/log_test.go b/src/lib/log_test.go
new file mode 100644
index 000000000..f0cfb13bc
--- /dev/null
+++ b/src/lib/log_test.go
@@ -0,0 +1,70 @@
+// 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";
+	"log";
+	"os";
+	"testing";
+)
+
+func test(t *testing.T, flag int, expect string) {
+	fd0, fd1, err1 := os.Pipe();
+	if err1 != nil {
+		t.Error("pipe", err1);
+	}
+	buf, err2 := bufio.NewBufRead(fd0);
+	if err2 != nil {
+		t.Error("bufio.NewBufRead", err2);
+	}
+	l := NewLogger(fd1, nil, flag);
+	l.Log("hello", 23, "world");	/// the line number of this line needs to be placed in the expect strings
+	line, err3 := buf.ReadLineString('\n', false);
+	if line[len(line)-len(expect):len(line)] != expect {
+		t.Error("log output should be ...", expect, "; is " , line);
+	}
+	t.Log(line);
+	fd0.Close();
+	fd1.Close();
+}
+
+func TestRegularLog(t *testing.T) {
+	test(t, Lok, "/go/src/lib/log_test.go:25: hello 23 world");
+}
+
+func TestShortNameLog(t *testing.T) {
+	test(t, Lok|Lshortname, " log_test.go:25: hello 23 world")
+}
+
+func testFormatted(t *testing.T, flag int, expect string) {
+	fd0, fd1, err1 := os.Pipe();
+	if err1 != nil {
+		t.Error("pipe", err1);
+	}
+	buf, err2 := bufio.NewBufRead(fd0);
+	if err2 != nil {
+		t.Error("bufio.NewBufRead", err2);
+	}
+	l := NewLogger(fd1, nil, flag);
+	l.Logf("hello %d world", 23);	/// the line number of this line needs to be placed in the expect strings
+	line, err3 := buf.ReadLineString('\n', false);
+	if line[len(line)-len(expect):len(line)] != expect {
+		t.Error("log output should be ...", expect, "; is " , line);
+	}
+	t.Log(line);
+	fd0.Close();
+	fd1.Close();
+}
+
+func TestRegularLogFormatted(t *testing.T) {
+	testFormatted(t, Lok, "/go/src/lib/log_test.go:53: hello 23 world");
+}
+
+func TestShortNameLogFormatted(t *testing.T) {
+	testFormatted(t, Lok|Lshortname, " log_test.go:53: hello 23 world")
+}