Added tests for task 224 and 231.

Author: javadev

src/test/java/g0201_0300/s0224_basic_calculator/SolutionTest.java

@@ -10,4 +10,14 @@ public class SolutionTest {
     public void calculate() {
         assertThat(new Solution().calculate("1 + 1"), equalTo(2));
     }
+
+    @Test
+    public void calculate2() {
+        assertThat(new Solution().calculate(" 2-1 + 2 "), equalTo(3));
+    }
+
+    @Test
+    public void calculate3() {
+        assertThat(new Solution().calculate("(1+(4+5+2)-3)+(6+8)"), equalTo(23));
+    }
 }

src/test/java/g0201_0300/s0231_power_of_two/SolutionTest.java

@@ -10,4 +10,24 @@ public class SolutionTest {
     public void isPowerOfTwo() {
         assertThat(new Solution().isPowerOfTwo(1), equalTo(true));
     }
+
+    @Test
+    public void isPowerOfTwo2() {
+        assertThat(new Solution().isPowerOfTwo(16), equalTo(true));
+    }
+
+    @Test
+    public void isPowerOfTwo3() {
+        assertThat(new Solution().isPowerOfTwo(3), equalTo(false));
+    }
+
+    @Test
+    public void isPowerOfTwo4() {
+        assertThat(new Solution().isPowerOfTwo(4), equalTo(true));
+    }
+
+    @Test
+    public void isPowerOfTwo5() {
+        assertThat(new Solution().isPowerOfTwo(5), equalTo(false));
+    }
 }