From 2bb188ae79cd6621dad17676a20ef04731f92071 Mon Sep 17 00:00:00 2001
From: Matthias Loibl <mail@matthiasloibl.com>
Date: Mon, 7 Nov 2016 22:44:25 +0100
Subject: [PATCH] Add test for IsLetter()

---
 modules/base/tool_test.go | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/modules/base/tool_test.go b/modules/base/tool_test.go
index 052a2f0dec..4f64d3728d 100644
--- a/modules/base/tool_test.go
+++ b/modules/base/tool_test.go
@@ -161,7 +161,21 @@ func TestInt64sToMap(t *testing.T) {
 	)
 }
 
-// TODO: IsLetter()
+func TestIsLetter(t *testing.T) {
+	assert.True(t, IsLetter('a'))
+	assert.True(t, IsLetter('e'))
+	assert.True(t, IsLetter('q'))
+	assert.True(t, IsLetter('z'))
+	assert.True(t, IsLetter('A'))
+	assert.True(t, IsLetter('E'))
+	assert.True(t, IsLetter('Q'))
+	assert.True(t, IsLetter('Z'))
+	assert.True(t, IsLetter('_'))
+	assert.False(t, IsLetter('-'))
+	assert.False(t, IsLetter('1'))
+	assert.False(t, IsLetter('$'))
+}
+
 // TODO: IsTextFile()
 // TODO: IsImageFile()
 // TODO: IsPDFFile()