ionic3 SQLite unit testing - sqlite

Question

I'm using ionic3 and am trying to unit test (using Jasmine/karma) the following code. Can anyone offer any guidance.
createTable(databaseName: string): Promise<any> {
let sql = 'CREATE TABLE IF NOT EXISTS table)';
return new Promise((resolve, reject) => {
this.sqlite.create({
name: databaseName + '.db',
location: 'default'
}).then((db: SQLiteObject) => {
db.executeSql(sql, [])
.then(() => {
console.info('Executed SQL');
})
.catch((e) => {
console.error('createTable Error', e.message);
reject(e);
});
});
})
}
Here's my work in progress attempt to test
describe('createTable()', () => {
let db: SQLiteObject;
it('Should call function createTable', () => {
spyOn(service.sqlite, 'create').and.returnValue(Promise.resolve(
));
let databaseName = 'testDatabase';
service.createEncounterTable(databaseName);
expect(service.sqlite.create).toHaveBeenCalled();
});
});
I'm getting the following error return ERROR: 'Unhandled Promise rejection:', 'Cannot read property 'executeSql' of undefined', and dont seem to be able to gain access to executeSql.
As far as I can tell, from the lack of online resource on testing SQLite I have to assume that most people don't test this. Thanks in advance to any guidance.