Added tests 20, 22.

Author: javadev

src/test/java/g0001_0100/s0020_valid_parentheses/SolutionTest.java

@@ -8,11 +8,26 @@
 class SolutionTest {
     @Test
     void isValid() {
-        Solution solution = new Solution();
-        assertThat(solution.isValid("()"), equalTo(true));
-        assertThat(solution.isValid("()[]{}"), equalTo(true));
-        assertThat(solution.isValid("(]"), equalTo(false));
-        assertThat(solution.isValid("([)]"), equalTo(false));
-        assertThat(solution.isValid("{[]}"), equalTo(true));
+        assertThat(new Solution().isValid("()"), equalTo(true));
+    }
+
+    @Test
+    void isValid2() {
+        assertThat(new Solution().isValid("()[]{}"), equalTo(true));
+    }
+
+    @Test
+    void isValid3() {
+        assertThat(new Solution().isValid("(]"), equalTo(false));
+    }
+
+    @Test
+    void isValid4() {
+        assertThat(new Solution().isValid("([)]"), equalTo(false));
+    }
+
+    @Test
+    void isValid5() {
+        assertThat(new Solution().isValid("{[]}"), equalTo(true));
     }
 }

src/test/java/g0001_0100/s0022_generate_parentheses/SolutionTest.java

@@ -13,4 +13,9 @@ void generateParenthesis() {
                 new Solution().generateParenthesis(3),
                 equalTo(Arrays.asList("((()))", "(()())", "(())()", "()(())", "()()()")));
     }
+
+    @Test
+    void generateParenthesis2() {
+        assertThat(new Solution().generateParenthesis(1), equalTo(Arrays.asList("()")));
+    }
 }