[BAEL-18364] move spring-rest-*** articles - 1

java-strings-2/src/test/java/com/baeldung/string/PangramUnitTest.java

@@ -0,0 +1,43 @@
+package com.baeldung.string;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import org.junit.Test;
+
+public class PangramUnitTest {
+
+    @Test
+    public void givenValidString_isPangram_shouldReturnSuccess() {
+        String input = "Two driven jocks help fax my big quiz";
+        assertTrue(Pangram.isPangram(input));
+        assertTrue(Pangram.isPangramWithStreams(input));
+    }
+
+    @Test
+    public void givenNullString_isPangram_shouldReturnFailure() {
+        String input = null;
+        assertFalse(Pangram.isPangram(input));
+        assertFalse(Pangram.isPangramWithStreams(input));
+        assertFalse(Pangram.isPerfectPangram(input));
+    }
+
+    @Test
+    public void givenPerfectPangramString_isPerfectPangram_shouldReturnSuccess() {
+        String input = "abcdefghijklmNoPqrStuVwxyz";
+        assertTrue(Pangram.isPerfectPangram(input));
+    }
+
+    @Test
+    public void givenNonPangramString_isPangram_shouldReturnFailure() {
+        String input = "invalid pangram";
+        assertFalse(Pangram.isPangram(input));
+        assertFalse(Pangram.isPangramWithStreams(input));
+    }
+
+    @Test
+    public void givenPangram_isPerfectPangram_shouldReturnFailure() {
+        String input = "Two driven jocks help fax my big quiz";
+        assertFalse(Pangram.isPerfectPangram(input));
+    }
+
+}