diff --git a/smart-contract/assembly/__tests__/tests.spec.ts b/smart-contract/assembly/__tests__/tests.spec.ts
index e151964..b37e531 100644
--- a/smart-contract/assembly/__tests__/tests.spec.ts
+++ b/smart-contract/assembly/__tests__/tests.spec.ts
@@ -1,54 +1,228 @@
-import { getSchedulesBySpender, startScheduleSendFT } from '../contracts/main';
+import {
+  cancelScheduleSendFT,
+  constructor,
+  getSchedule,
+  getScheduleByRecipient,
+  getSchedulesBySpender,
+  startScheduleSendFT,
+} from '../contracts/main';
 import { Args, u256ToBytes } from '@massalabs/as-types';
-import { mockScCall } from '@massalabs/massa-as-sdk';
+import {
+  changeCallStack,
+  mockAdminContext,
+  mockScCall,
+  resetStorage,
+} from '@massalabs/massa-as-sdk';
 import { u256 } from 'as-bignum/assembly';
 import { Schedule } from '../Schedule';
 
+const contractAddress = 'AS12BqZEQ6sByhRLyEuf0YbQmcF2PsDdkNNG1akBJu9XcjZA1eT';
+const admin = 'AU1mhPhXCfh8afoNnbW91bXUVAmu8wU7u8v54yNTMvY7E52KBbz3';
+const tokenAddress = 'AS12LpYyAjYRJfYhyu7fkrS224gMdvFHVEeVWoeHZzMdhis7UZ3Eb';
+const spender1 = 'AU12NT6c6oiYQhcXNAPRRqDudZGurJkFKcYNLPYSwYkMoEniHv8FW';
+const spender2 = 'AU12UBnqTHDQALpocVBnkPNy7y5CndUJQTLutaVDDFgMJcq5kQiKq';
+const recipient = 'AU12W92UyGW4Bd94BPniTq4Ra5yhiv6RvjazV2G9Q9GyekYkgqbme';
+const amount = u256.fromU64(12345678910);
+const interval: u64 = 60;
+const occurrences: u64 = 10;
+const tolerance: u32 = 5;
+let id: u64 = 1;
+
+function switchUser(user: string): void {
+  changeCallStack(user + ' , ' + contractAddress);
+}
+
+beforeEach(() => {
+  resetStorage();
+  mockAdminContext(true);
+  switchUser(admin);
+  constructor([]);
+  mockAdminContext(false);
+  switchUser(spender1);
+  id = 1;
+});
+
+function createSchedule(spender: string = spender1): void {
+  // mock allowance
+  mockScCall(u256ToBytes(amount));
+
+  const schedule = new Schedule(
+    0,
+    tokenAddress,
+    spender,
+    recipient,
+    amount,
+    interval,
+    occurrences,
+    occurrences,
+    tolerance,
+  );
+
+  const params = new Args().add(schedule);
+
+  startScheduleSendFT(params.serialize());
+}
+
 describe('Scheduler app test', () => {
   test('startScheduleSendFT', () => {
-    const tokenAddress =
-      'AS12LpYyAjYRJfYhyu7fkrS224gMdvFHVEeVWoeHZzMdhis7UZ3Eb';
-    const spender = 'AU12NT6c6oiYQhcXNAPRRqDudZGurJkFKcYNLPYSwYkMoEniHv8FW';
-    const recipient = 'AU12W92UyGW4Bd94BPniTq4Ra5yhiv6RvjazV2G9Q9GyekYkgqbme';
-    const amount = u256.fromU64(12345678910);
-    const interval: u64 = 60;
-    const occurrences: u64 = 10;
-    const tolerance: u32 = 5;
-
-    // mock allowance
-    mockScCall(u256ToBytes(amount));
-
-    const schedule = new Schedule(
-      0,
-      tokenAddress,
-      spender,
-      recipient,
-      amount,
-      interval,
-      occurrences,
-      occurrences,
-      tolerance,
-    );
-
-    const params = new Args().add(schedule);
-
-    startScheduleSendFT(params.serialize());
+    createSchedule();
 
     const schedulesSer = getSchedulesBySpender(
-      new Args().add(spender).serialize(),
+      new Args().add(spender1).serialize(),
     );
 
     const schedules = new Args(schedulesSer)
       .nextSerializableObjectArray<Schedule>()
       .unwrap();
     expect(schedules.length).toBe(1);
+    expect(schedules[0].id).toBe(id);
     expect(schedules[0].tokenAddress).toBe(tokenAddress);
-    expect(schedules[0].spender).toBe(spender);
+    expect(schedules[0].spender).toBe(spender1);
     expect(schedules[0].recipient).toBe(recipient);
     expect(schedules[0].amount).toBe(amount);
     expect(schedules[0].interval).toBe(interval);
     expect(schedules[0].occurrences).toBe(occurrences);
     expect(schedules[0].remaining).toBe(occurrences);
     expect(schedules[0].tolerance).toBe(tolerance);
+    expect(schedules[0].history).toStrictEqual([]);
+
+    const schedulesRecipientSer = getScheduleByRecipient(
+      new Args().add(recipient).serialize(),
+    );
+    expect(
+      new Args(schedulesRecipientSer)
+        .nextSerializableObjectArray<Schedule>()
+        .unwrap(),
+    ).toStrictEqual(schedules);
+
+    const scheduleSer = getSchedule(
+      new Args().add(spender1).add(id).serialize(),
+    );
+    expect(new Args(scheduleSer).next<Schedule>().unwrap()).toStrictEqual(
+      schedules[0],
+    );
+  });
+
+  test('startScheduleSendFT multiple', () => {
+    createSchedule();
+    createSchedule(); // second schedule
+    id++;
+
+    const schedulesSer = getSchedulesBySpender(
+      new Args().add(spender1).serialize(),
+    );
+
+    const schedules = new Args(schedulesSer)
+      .nextSerializableObjectArray<Schedule>()
+      .unwrap();
+    expect(schedules.length).toBe(2);
+    const schedulesRecipientSer = getScheduleByRecipient(
+      new Args().add(recipient).serialize(),
+    );
+    expect(
+      new Args(schedulesRecipientSer)
+        .nextSerializableObjectArray<Schedule>()
+        .unwrap(),
+    ).toStrictEqual(schedules);
+
+    const scheduleSer = getSchedule(
+      new Args().add(spender1).add(id).serialize(),
+    );
+    expect(new Args(scheduleSer).next<Schedule>().unwrap()).toStrictEqual(
+      schedules[1],
+    );
+  });
+
+  test('startScheduleSendFT multiple spenders', () => {
+    createSchedule();
+    switchUser(spender2);
+    createSchedule(spender2); // second schedule
+    id++;
+
+    const schedules = new Args(
+      getSchedulesBySpender(new Args().add(spender2).serialize()),
+    )
+      .nextSerializableObjectArray<Schedule>()
+      .unwrap();
+    expect(schedules.length).toBe(1);
+    expect(
+      new Args(getScheduleByRecipient(new Args().add(recipient).serialize()))
+        .nextSerializableObjectArray<Schedule>()
+        .unwrap().length,
+    ).toBe(2);
+
+    const scheduleSer = getSchedule(
+      new Args().add(spender2).add(id).serialize(),
+    );
+    expect(new Args(scheduleSer).next<Schedule>().unwrap()).toStrictEqual(
+      schedules[0],
+    );
+  });
+});
+
+describe('cancelScheduleSendFT', () => {
+  test('success', () => {
+    createSchedule();
+
+    cancelScheduleSendFT(new Args().add(spender1).add(id).serialize());
+
+    const schedulesSer = getSchedulesBySpender(
+      new Args().add(spender1).serialize(),
+    );
+    expect(
+      new Args(schedulesSer).nextSerializableObjectArray<Schedule>().unwrap()
+        .length,
+    ).toBe(0);
+
+    const schedulesRecipientSer = getScheduleByRecipient(
+      new Args().add(recipient).serialize(),
+    );
+    expect(
+      new Args(schedulesRecipientSer)
+        .nextSerializableObjectArray<Schedule>()
+        .unwrap().length,
+    ).toBe(0);
+
+    expect(() => {
+      getSchedule(new Args().add(spender1).add(id).serialize());
+    }).toThrow();
+  });
+
+  throws('fail: unauthorized', () => {
+    createSchedule();
+    switchUser(spender2);
+    cancelScheduleSendFT(new Args().add(spender1).add(id).serialize());
+  });
+
+  test('multiple, cancel the first one', () => {
+    createSchedule();
+    createSchedule(); // second schedule
+    id++;
+    cancelScheduleSendFT(
+      new Args()
+        .add(spender1)
+        .add(id - 1)
+        .serialize(),
+    );
+
+    const schedules = new Args(
+      getSchedulesBySpender(new Args().add(spender1).serialize()),
+    )
+      .nextSerializableObjectArray<Schedule>()
+      .unwrap();
+    expect(schedules.length).toBe(1);
+    const schedulesRecipient = new Args(
+      getScheduleByRecipient(new Args().add(recipient).serialize()),
+    )
+      .nextSerializableObjectArray<Schedule>()
+      .unwrap();
+    expect(schedulesRecipient).toStrictEqual(schedules);
+
+    const scheduleSer = getSchedule(
+      new Args().add(spender1).add(id).serialize(),
+    );
+    expect(new Args(scheduleSer).next<Schedule>().unwrap()).toStrictEqual(
+      schedules[0],
+    );
   });
 });