public void countXX() { assertEquals("Input: countXX(\"abcxx\")", 1, exercises.CountXX("abcxx")); assertEquals("Input: countXX(\"xxx\")", 2, exercises.CountXX("xxx")); assertEquals("Input: countXX(\"xxxx\")", 3, exercises.CountXX("xxxx")); assertEquals("Input: countXX(\"\")", 0, exercises.CountXX("")); assertEquals("Input: countXX(\"Hello there\")", 0, exercises.CountXX("Hello there")); assertEquals("Input: countXX(\"Hexxo thxxe\")", 2, exercises.CountXX("Hexxo thxxe")); assertEquals("Input: countXX(\"\")", 0, exercises.CountXX("")); assertEquals("Input: countXX(\"Kittens\")", 0, exercises.CountXX("Kittens")); assertEquals("Input: countXX(\"Kittensxxx\")", 2, exercises.CountXX("Kittensxxx")); }