diff --git a/src/test/java/seedu/address/AppParametersTest.java b/src/test/java/seedu/address/AppParametersTest.java
index 3edf13d6..133cc008 100644
--- a/src/test/java/seedu/address/AppParametersTest.java
+++ b/src/test/java/seedu/address/AppParametersTest.java
@@ -1,6 +1,8 @@
 package seedu.address;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.nio.file.Paths;
 import java.util.Collections;
@@ -44,6 +46,28 @@ public void toStringMethod() {
         assertEquals(expected, appParameters.toString());
     }
 
+    @Test
+    public void equals() {
+        AppParameters appParameters = new AppParameters();
+
+        // same values -> returns true
+        assertTrue(appParameters.equals(new AppParameters()));
+
+        // same object -> returns true
+        assertTrue(appParameters.equals(appParameters));
+
+        // null -> returns false
+        assertFalse(appParameters.equals(null));
+
+        // different types -> returns false
+        assertFalse(appParameters.equals(5.0f));
+
+        // different config path -> returns false
+        AppParameters otherAppParameters = new AppParameters();
+        otherAppParameters.setConfigPath(Paths.get("configPath"));
+        assertFalse(appParameters.equals(otherAppParameters));
+    }
+
     private static class ParametersStub extends Application.Parameters {
         private Map<String, String> namedParameters = new HashMap<>();
 
diff --git a/src/test/java/seedu/address/model/person/AddressTest.java b/src/test/java/seedu/address/model/person/AddressTest.java
index dcd3be87..314885ec 100644
--- a/src/test/java/seedu/address/model/person/AddressTest.java
+++ b/src/test/java/seedu/address/model/person/AddressTest.java
@@ -33,4 +33,24 @@ public void isValidAddress() {
         assertTrue(Address.isValidAddress("-")); // one character
         assertTrue(Address.isValidAddress("Leng Inc; 1234 Market St; San Francisco CA 2349879; USA")); // long address
     }
+
+    @Test
+    public void equals() {
+        Address address = new Address("Valid Address");
+
+        // same values -> returns true
+        assertTrue(address.equals(new Address("Valid Address")));
+
+        // same object -> returns true
+        assertTrue(address.equals(address));
+
+        // null -> returns false
+        assertFalse(address.equals(null));
+
+        // different types -> returns false
+        assertFalse(address.equals(5.0f));
+
+        // different values -> returns false
+        assertFalse(address.equals(new Address("Other Valid Address")));
+    }
 }
diff --git a/src/test/java/seedu/address/model/person/EmailTest.java b/src/test/java/seedu/address/model/person/EmailTest.java
index bbcc6c8c..f08cdff0 100644
--- a/src/test/java/seedu/address/model/person/EmailTest.java
+++ b/src/test/java/seedu/address/model/person/EmailTest.java
@@ -65,4 +65,24 @@ public void isValidEmail() {
         assertTrue(Email.isValidEmail("if.you.dream.it_you.can.do.it@example.com")); // long local part
         assertTrue(Email.isValidEmail("e1234567@u.nus.edu")); // more than one period in domain
     }
+
+    @Test
+    public void equals() {
+        Email email = new Email("valid@email");
+
+        // same values -> returns true
+        assertTrue(email.equals(new Email("valid@email")));
+
+        // same object -> returns true
+        assertTrue(email.equals(email));
+
+        // null -> returns false
+        assertFalse(email.equals(null));
+
+        // different types -> returns false
+        assertFalse(email.equals(5.0f));
+
+        // different values -> returns false
+        assertFalse(email.equals(new Email("other.valid@email")));
+    }
 }
diff --git a/src/test/java/seedu/address/model/person/NameTest.java b/src/test/java/seedu/address/model/person/NameTest.java
index c9801392..94e3dd72 100644
--- a/src/test/java/seedu/address/model/person/NameTest.java
+++ b/src/test/java/seedu/address/model/person/NameTest.java
@@ -37,4 +37,24 @@ public void isValidName() {
         assertTrue(Name.isValidName("Capital Tan")); // with capital letters
         assertTrue(Name.isValidName("David Roger Jackson Ray Jr 2nd")); // long names
     }
+
+    @Test
+    public void equals() {
+        Name name = new Name("Valid Name");
+
+        // same values -> returns true
+        assertTrue(name.equals(new Name("Valid Name")));
+
+        // same object -> returns true
+        assertTrue(name.equals(name));
+
+        // null -> returns false
+        assertFalse(name.equals(null));
+
+        // different types -> returns false
+        assertFalse(name.equals(5.0f));
+
+        // different values -> returns false
+        assertFalse(name.equals(new Name("Other Valid Name")));
+    }
 }
diff --git a/src/test/java/seedu/address/model/person/PhoneTest.java b/src/test/java/seedu/address/model/person/PhoneTest.java
index 8dd52766..deaaa5ba 100644
--- a/src/test/java/seedu/address/model/person/PhoneTest.java
+++ b/src/test/java/seedu/address/model/person/PhoneTest.java
@@ -37,4 +37,24 @@ public void isValidPhone() {
         assertTrue(Phone.isValidPhone("93121534"));
         assertTrue(Phone.isValidPhone("124293842033123")); // long phone numbers
     }
+
+    @Test
+    public void equals() {
+        Phone phone = new Phone("999");
+
+        // same values -> returns true
+        assertTrue(phone.equals(new Phone("999")));
+
+        // same object -> returns true
+        assertTrue(phone.equals(phone));
+
+        // null -> returns false
+        assertFalse(phone.equals(null));
+
+        // different types -> returns false
+        assertFalse(phone.equals(5.0f));
+
+        // different values -> returns false
+        assertFalse(phone.equals(new Phone("995")));
+    }
 }