post_upgrade tests

[dansteren]

The generated canister will look something like this:

// Create variables for each post_upgrade param
let initialized: boolean = false;
let deployParam0: any;
let deployParam1: any;

export default Canister {
    init: ([bool, text], (param0, param1) => {
        ensureParamsCorrectlyOrdered(param0, param1);
        deployParam0 = param0;
        deployParam1 = param1;
    }),
    postUpgrade: ([bool, text], (param0, param1) => {
        ensureParamsCorrectlyOrdered(params, param1);
        deployParam0 = param0;
        deployParam1 = param1;
    }),

    // create a method to retrieve the stored values
    getDeployParams: query([], Tuple(bool, bool,text), () => {
        return [initialized, initParam0, initParam1]
    })
}

Subtasks

• Ensure init and post-upgrade params are the same types
• Pass different values for init and postDeploy (maybe?)
• Support 0 parameters
• have multiple deploys in the tests with different postUpgrade params for each.