1 files changed, 53 insertions, 0 deletions
diff --git a/src/net/parse_test.go b/src/net/parse_test.go
new file mode 100644
index 000000000..7b213b75b
--- /dev/null
+++ b/src/net/parse_test.go
@@ -0,0 +1,53 @@
+// 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 net
+
+import (
+	"bufio"
+	"os"
+	"runtime"
+	"testing"
+)
+
+func TestReadLine(t *testing.T) {
+	// /etc/services file does not exist on android, plan9, windows.
+	switch runtime.GOOS {
+	case "android", "plan9", "windows":
+		t.Skipf("skipping test on %q", runtime.GOOS)
+	}
+	filename := "/etc/services" // a nice big file
+
+	fd, err := os.Open(filename)
+	if err != nil {
+		t.Fatalf("open %s: %v", filename, err)
+	}
+	defer fd.Close()
+	br := bufio.NewReader(fd)
+
+	file, err := open(filename)
+	if file == nil {
+		t.Fatalf("net.open(%s) = nil", filename)
+	}
+	defer file.close()
+
+	lineno := 1
+	byteno := 0
+	for {
+		bline, berr := br.ReadString('\n')
+		if n := len(bline); n > 0 {
+			bline = bline[0 : n-1]
+		}
+		line, ok := file.readLine()
+		if (berr != nil) != !ok || bline != line {
+			t.Fatalf("%s:%d (#%d)\nbufio => %q, %v\nnet => %q, %v",
+				filename, lineno, byteno, bline, berr, line, ok)
+		}
+		if !ok {
+			break
+		}
+		lineno++
+		byteno += len(line) + 1
+	}
+}