public void arrayCount9() { Assert.AreEqual(1, exercises.ArrayCount9(new int[] { 1, 2, 9 }), "Input {1, 2, 9}"); Assert.AreEqual(2, exercises.ArrayCount9(new int[] { 1, 9, 9 }), "Input {1, 9, 9}"); Assert.AreEqual(3, exercises.ArrayCount9(new int[] { 1, 9, 9, 3, 9 }), "Input {1, 9, 9, 3, 9}"); Assert.AreEqual(0, exercises.ArrayCount9(new int[] { 1, 2, 3 }), "Input {1, 2, 3}"); Assert.AreEqual(0, exercises.ArrayCount9(new int[] { }), "Input { }"); Assert.AreEqual(0, exercises.ArrayCount9(new int[] { 4, 2, 4, 3, 1 }), "Input { 4, 2, 4, 3, 1 }"); Assert.AreEqual(1, exercises.ArrayCount9(new int[] { 9, 2, 4, 3, 1 }), "Input { 9, 2, 4, 3, 1 }"); }