feat(SubstringTest): testing out substring method

101zh · Oct 3, 2023 · dd11072 · dd11072
1 parent c1dc08d
commit dd11072
Showing 1 changed file with 24 additions and 0 deletions.
diff --git a/src/test/java/SubstringTest.java b/src/test/java/SubstringTest.java
@@ -0,0 +1,24 @@
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class SubstringTest {
+    @Test
+    public void zeroZeroTest(){
+        String a="a";
+        a=a.substring(0, 0);
+        assertTrue(a.equals(""));
+    }
+
+    @Test
+    public void lengthTest(){
+        String a = "012345";
+        String segment = "23";
+        int index = a.indexOf(segment);
+        a = a.substring(0, index)+a.substring(index+segment.length());
+        assertTrue(a.equals("0145"));
+
+    }
+}