Jest Testing - mockReset does not clear the already set values - node.js

Question

I have a lambda which calls an interface. Am trying to mock the functions imported from the interface. In each test case, I have to mock different values. When I run all the test cases, the first mocked value does not get cleared and it is carried over to all Test cases
interface.js
const oracledb=require("oracledb");
module.exports = class dbLayer{
execSql= async (sqlQuery) => {
var result;
var binds={};
result = await oracledb.execute(sqlQuery,binds);
return result
}
}
lambda.js
const qryInterface = require(./interface)
var db;
const handler = async (event, context) => {
var sql= event.query
db = new qryInterface();
var dbResponse = await db.execSql(sql)
return dbResponse
}
test.js
const index = require(./lambda)
const dbMock = require(./interface)
jest.mock(./interface);
var mockResponse1 = {
rows: [
{
col1 : 123
}
]
}
var mockResponse2 = {
rows: [
{
col1 : 456
}
]
}
const firstQryResponse = async () => {
return new Promise((resolve, reject) => {
resolve(mockResponse1);
});
};
const secondQryResponse = async () => {
return new Promise((resolve, reject) => {
resolve(mockResponse2);
});
};
describe("1st test suite", () => {
beforeEach(() => {
dbMock.mockReset();
jest.restoreAllMocks();
});
it("Test 1", asycn () => {
var event={}
event.sql=`SELECT col1 FROM TBL_A WHERE col2 = 'A'`
dbMock.mockImplementation(() => {
return {
execSql:firstQryResponse
}
});
var response = await index.handler(event)
expect(response).toEqual(mockResponse1 )
});
it("Test 2", asycn () => {
var event={}
event.sql=`SELECT col1 FROM TBL_A WHERE col2 = 'B'`
dbMock.mockImplementation(() => {
return {
execSql:secondQryResponse
}
});
var response = await index.handler(event)
expect(response).toEqual(mockResponse2 )
});
});
Test 1 mocks the value set in firstQryResponse and Test 2 mocks secondQryResponse. But what happens is the value mocked for execSql is Not getting reset in Test 2 .i.e. firstQryResponse gets carried over to Test 2.
Because of this, 2nd test fails. If i run them individually, it runs fine. I did try mockReset(), but it does not help as well.
Appreciate any help on this
Thanks
Sadiq