From 0f837aa8d02f85504227f0a23258f9e02f648bc2 Mon Sep 17 00:00:00 2001
From: Chen Yufei <cyfdecyf@gmail.com>
Date: Sun, 23 Dec 2012 14:18:34 +0800
Subject: [PATCH] Add test for isFileExists.

---
 testdata/file |  0
 util_test.go  | 26 ++++++++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 testdata/file

diff --git a/testdata/file b/testdata/file
new file mode 100644
index 0000000..e69de29
diff --git a/util_test.go b/util_test.go
index a1262d9..fcef3e5 100644
--- a/util_test.go
+++ b/util_test.go
@@ -73,3 +73,29 @@ func TestCopyN(t *testing.T) {
 		t.Error("copy len(pre)+size+len(end)<bufLen failed, got:", dst.String())
 	}
 }
+
+func TestIsFileExists(t *testing.T) {
+	exists, err := isFileExists("testdata")
+	if err == nil {
+		t.Error("should return error is path is directory")
+	}
+	if exists {
+		t.Error("directory should return false")
+	}
+
+	exists, err = isFileExists("testdata/none")
+	if exists {
+		t.Error("BOOM! You've found a non-existing file!")
+	}
+	if err != nil {
+		t.Error("Not existing file should just return false, on error")	
+	}
+
+	exists, err = isFileExists("testdata/file")
+	if !exists {
+		t.Error("testdata/file exists, but returns false")
+	}
+	if err != nil {
+		t.Error("Why error for existing file?")	
+	}
+}
\ No newline at end of file