diff --git a/src/tools/checkstyle/test.cpp b/src/tools/checkstyle/test.cpp
new file mode 100644
index 0000000000..3d3c6593e1
--- /dev/null
+++ b/src/tools/checkstyle/test.cpp
@@ -0,0 +1,71 @@
+/* Test-file for coding style checker
+ * Copyright 2010, Haiku, Inc.
+ * Distributed under the terms of the MIT Licence
+ */
+
+
+// DETECTED problems
+
+
+// Line longer than 80 chars
+int
+someveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryveryverylongFunctionName( int aLongParameter)
+{
+	// Identantion with spaces instead of tabs
+ 	int a;
+	 int b;
+	 	int c;
+
+	// Missing space after control statement
+	if(condition);
+
+	//Missing space at comment start
+
+	// Operator without spaces
+	if (a>b);
+
+	// Operator at end of line
+	if (a >
+		b)
+	j =
+		k +
+		i;
+
+	// Wrong line breaks around else
+	if (test)
+	{
+	}
+	else
+	{
+	}
+	// Less than two lines between functions
+}
+
+// Missing space before opening brace
+int
+aFunction(char param){
+	// More than two lines between blocks
+}
+
+
+
+// CORRECT things that should not be detected as violations
+#include <dir/path.h>
+	// Not matched by 'operator at end of line'
+
+
+// Below this are FALSE POSITIVES (think of it as a TODO list)
+// Test-file
+	// Matched by 'space around operator' (should not be matched in comments)
+
+
+// NOT DETECTED violations
+int func()
+{
+	if (a)
+	{
+		// The brace should be on the same line as the if
+	}
+
+	// Everything related to naming conventions
+}