diff --git a/core-java/src/test/java/com/baeldung/string/CharSequenceVsStringUnitTest.java b/core-java/src/test/java/com/baeldung/string/CharSequenceVsStringUnitTest.java
index 1378b5d876..916a3c79ff 100644
--- a/core-java/src/test/java/com/baeldung/string/CharSequenceVsStringUnitTest.java
+++ b/core-java/src/test/java/com/baeldung/string/CharSequenceVsStringUnitTest.java
@@ -21,7 +21,7 @@ public class CharSequenceVsStringUnitTest {
         CharSequence charSequence1 = "baeldung_1";
         CharSequence charSequence2 = "baeldung_2";
 
-        assertTrue(charSequence1.toString().compareTo(charSequence2.toString()) > 0);
+        assertTrue(charSequence1.toString().compareTo(charSequence2.toString()) < 0);
     }
 
     @Test
@@ -31,7 +31,7 @@ public class CharSequenceVsStringUnitTest {
         test += "b";
         int secondAddressOfTest = System.identityHashCode(test);
 
-        assertEquals(firstAddressOfTest, secondAddressOfTest);
+        assertNotEquals(firstAddressOfTest, secondAddressOfTest);
     }
 
     @Test
diff --git a/libraries/src/test/java/com/baeldung/commons/collections4/BagTests.java b/libraries/src/test/java/com/baeldung/commons/collections4/BagTests.java
index 1270c50008..4ce250d979 100644
--- a/libraries/src/test/java/com/baeldung/commons/collections4/BagTests.java
+++ b/libraries/src/test/java/com/baeldung/commons/collections4/BagTests.java
@@ -34,9 +34,7 @@ public class BagTests {
 		Assert.assertFalse(baseBag.contains("lemon"));
 
 		Assert.assertTrue(baseBag.uniqueSet().contains("apple"));
-		Assert.assertFalse(baseBag.uniqueSet().contains("lemon"));
-		Assert.assertTrue(baseBag.uniqueSet().contains("lime"));
-
+		
 		List<String> containList = new ArrayList<String>();
 		containList.add("apple");
 		containList.add("lemon");
@@ -56,11 +54,12 @@ public class BagTests {
 		baseCollectionBag.remove("lemon");
 		Assert.assertEquals(8, baseCollectionBag.size());
 		Assert.assertTrue(baseCollectionBag.contains("lemon"));
+		
+		baseCollectionBag.remove("lemon",1);
+		Assert.assertEquals(7, baseCollectionBag.size());
 
 		Assert.assertTrue(baseBag.uniqueSet().contains("apple"));
-		Assert.assertTrue(baseBag.uniqueSet().contains("lemon"));
-		Assert.assertTrue(baseBag.uniqueSet().contains("lime"));
-
+		
 		List<String> containList = new ArrayList<String>();
 		containList.add("apple");
 		containList.add("lemon");
@@ -81,5 +80,6 @@ public class BagTests {
 		treeBag.remove("apple");
 		Assert.assertEquals(9, treeBag.size());
 		Assert.assertEquals("banana", treeBag.first());
+		
 	}
 }