diff --git a/src/test/java/teammates/sqllogic/core/AccountRequestsLogicTest.java b/src/test/java/teammates/sqllogic/core/AccountRequestsLogicTest.java
new file mode 100644
index 00000000000..aca37f99963
--- /dev/null
+++ b/src/test/java/teammates/sqllogic/core/AccountRequestsLogicTest.java
@@ -0,0 +1,177 @@
+package teammates.sqllogic.core;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.nullable;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.Test;
+
+import teammates.common.exception.EntityAlreadyExistsException;
+import teammates.common.exception.EntityDoesNotExistException;
+import teammates.common.exception.InvalidParametersException;
+import teammates.common.util.Const;
+import teammates.storage.sqlapi.AccountRequestsDb;
+import teammates.storage.sqlentity.AccountRequest;
+import teammates.test.BaseTestCase;
+
+/**
+ * SUT: {@link AccountRequestsLogic}.
+ */
+public class AccountRequestsLogicTest extends BaseTestCase {
+
+    private final AccountRequestsLogic arLogic = AccountRequestsLogic.inst();
+    private AccountRequestsDb arDb;
+
+    @BeforeMethod
+    public void setUpMethod() {
+        arDb = mock(AccountRequestsDb.class);
+        arLogic.initLogicDependencies(arDb);
+    }
+
+    @Test
+    public void testCreateAccountRequest_typicalRequest_success() throws Exception {
+        AccountRequest accountRequest = getTypicalAccountRequest();
+        when(arDb.createAccountRequest(accountRequest)).thenReturn(accountRequest);
+        AccountRequest createdAccountRequest = arLogic.createAccountRequest(accountRequest);
+
+        assertEquals(accountRequest, createdAccountRequest);
+        verify(arDb, times(1)).createAccountRequest(accountRequest);
+    }
+
+    @Test
+    public void testCreateAccountRequest_requestAlreadyExists_failure() throws Exception {
+        AccountRequest duplicateAccountRequest = getTypicalAccountRequest();
+        when(arDb.createAccountRequest(duplicateAccountRequest))
+                .thenThrow(new EntityAlreadyExistsException("test exception"));
+
+        assertThrows(EntityAlreadyExistsException.class, () -> {
+            arLogic.createAccountRequest(duplicateAccountRequest);
+        });
+        verify(arDb, times(1)).createAccountRequest(duplicateAccountRequest);
+    }
+
+    @Test
+    public void testCreateAccountRequest_invalidParams_failure() throws Exception {
+        AccountRequest invalidEmailAccountRequest = getTypicalAccountRequest();
+        invalidEmailAccountRequest.setEmail("invalid email");
+        when(arDb.createAccountRequest(invalidEmailAccountRequest))
+                .thenThrow(new InvalidParametersException("test exception"));
+
+        assertThrows(InvalidParametersException.class, () -> {
+            arLogic.createAccountRequest(invalidEmailAccountRequest);
+        });
+        verify(arDb, times(1)).createAccountRequest(invalidEmailAccountRequest);
+    }
+
+    @Test
+    public void testUpdateAccountRequest_typicalRequest_success()
+            throws InvalidParametersException, EntityDoesNotExistException {
+        AccountRequest ar = getTypicalAccountRequest();
+        when(arDb.updateAccountRequest(ar)).thenReturn(ar);
+        AccountRequest updatedAr = arLogic.updateAccountRequest(ar);
+
+        assertEquals(ar, updatedAr);
+        verify(arDb, times(1)).updateAccountRequest(ar);
+    }
+
+    @Test
+    public void testUpdateAccountRequest_requestNotFound_failure()
+            throws InvalidParametersException, EntityDoesNotExistException {
+        AccountRequest arNotFound = getTypicalAccountRequest();
+        when(arDb.updateAccountRequest(arNotFound)).thenThrow(new EntityDoesNotExistException("test message"));
+
+        assertThrows(EntityDoesNotExistException.class,
+                () -> arLogic.updateAccountRequest(arNotFound));
+        verify(arDb, times(1)).updateAccountRequest(any(AccountRequest.class));
+    }
+
+    @Test
+    public void testDeleteAccountRequest_typicalRequest_success() {
+        AccountRequest ar = getTypicalAccountRequest();
+        when(arDb.getAccountRequest(ar.getEmail(), ar.getInstitute())).thenReturn(ar);
+        arLogic.deleteAccountRequest(ar.getEmail(), ar.getInstitute());
+
+        verify(arDb, times(1)).deleteAccountRequest(any(AccountRequest.class));
+    }
+
+    @Test
+    public void testDeleteAccountRequest_nonexistentRequest_shouldSilentlyDelete() {
+        arLogic.deleteAccountRequest("not_exist", "not_exist");
+
+        verify(arDb, times(1)).deleteAccountRequest(nullable(AccountRequest.class));
+    }
+
+    @Test
+    public void testGetAccountRequestByRegistrationKey_typicalRequest_success() {
+        AccountRequest ar = getTypicalAccountRequest();
+        String regkey = "regkey";
+        ar.setRegistrationKey(regkey);
+        when(arDb.getAccountRequestByRegistrationKey(regkey)).thenReturn(ar);
+        AccountRequest actualAr =
+                arLogic.getAccountRequestByRegistrationKey(ar.getRegistrationKey());
+
+        assertEquals(ar, actualAr);
+        verify(arDb, times(1)).getAccountRequestByRegistrationKey(regkey);
+    }
+
+    @Test
+    public void testGetAccountRequestByRegistrationKey_nonexistentRequest_shouldReturnNull() throws Exception {
+        String nonexistentRegkey = "not_exist";
+        when(arDb.getAccountRequestByRegistrationKey(nonexistentRegkey)).thenReturn(null);
+
+        assertNull(arLogic.getAccountRequestByRegistrationKey(nonexistentRegkey));
+        verify(arDb, times(1)).getAccountRequestByRegistrationKey(nonexistentRegkey);
+    }
+
+    @Test
+    public void testGetAccountRequest_typicalRequest_success() {
+        AccountRequest expectedAr = getTypicalAccountRequest();
+        when(arDb.getAccountRequest(expectedAr.getEmail(), expectedAr.getInstitute())).thenReturn(expectedAr);
+        AccountRequest actualAr =
+                arLogic.getAccountRequest(expectedAr.getEmail(), expectedAr.getInstitute());
+
+        assertEquals(expectedAr, actualAr);
+        verify(arDb, times(1)).getAccountRequest(expectedAr.getEmail(), expectedAr.getInstitute());
+    }
+
+    @Test
+    public void testGetAccountRequest_nonexistentRequest_shouldReturnNull() {
+        String nonexistentEmail = "not-found@test.com";
+        String nonexistentInstitute = "not-found";
+        when(arDb.getAccountRequest(nonexistentEmail, nonexistentInstitute)).thenReturn(null);
+
+        assertNull(arLogic.getAccountRequest(nonexistentEmail, nonexistentInstitute));
+        verify(arDb, times(1)).getAccountRequest(nonexistentEmail, nonexistentInstitute);
+    }
+
+    @Test
+    public void testResetAccountRequest_typicalRequest_success()
+            throws InvalidParametersException, EntityDoesNotExistException {
+        AccountRequest accountRequest = getTypicalAccountRequest();
+        accountRequest.setRegisteredAt(Const.TIME_REPRESENTS_NOW);
+        when(arDb.getAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute()))
+                .thenReturn(accountRequest);
+        when(arDb.updateAccountRequest(accountRequest)).thenReturn(accountRequest);
+        accountRequest = arLogic.resetAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute());
+
+        assertNull(accountRequest.getRegisteredAt());
+        verify(arDb, times(1)).getAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute());
+    }
+
+    @Test
+    public void testResetAccountRequest_nonexistentRequest_failure()
+            throws InvalidParametersException, EntityDoesNotExistException {
+        AccountRequest accountRequest = getTypicalAccountRequest();
+        accountRequest.setRegisteredAt(Const.TIME_REPRESENTS_NOW);
+        when(arDb.getAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute()))
+                .thenReturn(null);
+        assertThrows(EntityDoesNotExistException.class,
+                () -> arLogic.resetAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute()));
+        verify(arDb, times(1)).getAccountRequest(accountRequest.getEmail(), accountRequest.getInstitute());
+        verify(arDb, times(0)).updateAccountRequest(nullable(AccountRequest.class));
+    }
+}
diff --git a/src/test/java/teammates/test/BaseTestCase.java b/src/test/java/teammates/test/BaseTestCase.java
index a7744061d55..ffe08b21813 100644
--- a/src/test/java/teammates/test/BaseTestCase.java
+++ b/src/test/java/teammates/test/BaseTestCase.java
@@ -29,6 +29,7 @@
 import teammates.common.util.TimeHelperExtension;
 import teammates.sqllogic.core.DataBundleLogic;
 import teammates.storage.sqlentity.Account;
+import teammates.storage.sqlentity.AccountRequest;
 import teammates.storage.sqlentity.Course;
 import teammates.storage.sqlentity.FeedbackQuestion;
 import teammates.storage.sqlentity.FeedbackResponse;
@@ -206,6 +207,10 @@ protected FeedbackResponseComment getTypicalResponseComment(Long id) {
         return comment;
     }
 
+    protected AccountRequest getTypicalAccountRequest() {
+        return new AccountRequest("valid@test.com", "Test account Name", "TEAMMATES Test Institute 1");
+    }
+
     /**
      * Populates the feedback question and response IDs within the data bundle.
      *