Java tdd

README.md

@@ -36,4 +36,4 @@ The implementation part should be done in this order:
 1. Implement `StringUtils.isPalindrome(final String str)`
 2. Implement the tests for `Calculator.sumAll(final Integer... valuesPram)`
 3. Implement both the tests and the functionality for `StringUtils.isBlank(final String str)`
-    
+hej

src/main/java/se/cygni/palmithor/tdd/StringUtils.java

@@ -4,7 +4,12 @@ public class StringUtils {
 
 
     public boolean isPalindrome(final String str) {
-        throw new RuntimeException("Not yet implemented");
+        if (str == null) {
+            return false;
+        }
+        StringBuilder sb = new StringBuilder(str).reverse();
+        var sbStr = sb.toString();
+        return sbStr.equals(str);
     }
 
 
@@ -15,6 +20,6 @@ public boolean isPalindrome(final String str) {
      * @return true if str is null, empty or whitespace only, otherwise false
      */
     public boolean isBlank(final String str) {
-        throw new RuntimeException("Not yet implemented");
+      return str == null || str.equals("") || str.replace(" ", "").isEmpty();
     }
 }

src/test/java/se/cygni/palmithor/tdd/CalculatorTest.java

@@ -13,8 +13,14 @@ public class CalculatorTest {
 
     @Test
     public void test() {
-        assertThat(calculator.sumAll().get()).isEqualTo(1); // TODO failing on purpose please fix
+        assertThat(calculator.sumAll().get()).isEqualTo(0); // TODO failing on purpose please fix
+        assertThat(calculator.sumAll(1)).isEqualTo(Optional.of(1));
+        assertThat(calculator.sumAll(0, 0)).isEqualTo(Optional.of(0));
+        assertThat(calculator.sumAll(1, 1)).isEqualTo(Optional.of(2));
+        assertThat(calculator.sumAll(-1, 1)).isEqualTo(Optional.of(0));
+        assertThat(calculator.sumAll(-1, -1)).isEqualTo(Optional.of(-2));
+        assertThat(calculator.sumAll(null)).isEqualTo(Optional.empty());
     }
 
 
-}
+}

src/test/java/se/cygni/palmithor/tdd/StringUtilsTest.java

@@ -24,6 +24,10 @@ public void isPalindrome() {
      */
     @Test
     public void isBlank() {
-        // stringUtils.isBlank()
+        assertThat(stringUtils.isBlank("")).isTrue();
+        assertThat(stringUtils.isBlank("asd")).isFalse();
+        assertThat(stringUtils.isBlank(null)).isTrue();
+        assertThat(stringUtils.isBlank("          ")).isTrue();
+
     }
 }