EPIC: Add UT accross various files in repository

[Karthik-K-N]

/kind feature
/area provider/ibmcloud

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

Recently we added lots of functionality but haven't added any corresponding UT's to it. Its time to add unit test cases and overall goal is to reach 80% of test coverage.

As a non-goal during the time of adding UT if we find any redundant or unwanted or code duplication, a separate PR needs to be submitted to optimize the code.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

• cloud/scope/powervs_cluster.go
• cloud/scope/powervs_machine.go

Instructions for running individual tests on VS Code

1. Get kubebuilder asset path

$ cd cluster-api-provider-ibmcloud
$ make setup-envtest
kube-builder assets set using darwin OS at location /Users/karthikkn/Library/Application Support/io.kubebuilder.envtest/k8s/1.29.3-darwin-amd64

2. Create settings.json file with kubebuilder asset path

$ cd cluster-api-provider-ibmcloud/.vscode
$ cat settings.json
cat settings.json
{
    "go.testEnvVars": {
        "KUBEBUILDER_ASSETS": "/Users/karthikkn/Library/Application Support/io.kubebuilder.envtest/k8s/1.29.3-darwin-amd64",
    },
}

3. Run individual test by clicking on run test above test function name in VS Code editor

Instructions for checking code coverage of file

1. Generate the test coverage html page

$ cd cluster-api-provider-ibmcloud/.vscode
$ make test-cover

A file named cover.html will be created under cluster-api-provider-ibmcloud directory

example path: /Users/karthikkn/k8-workspace/cluster-api-provider-ibmcloud/cover.html

2. Copy the path of the file and paste in browser to view the html page and select the file to view the lines covered in UT.

[Amulyam24]

Will take up adding UT for cloud/scope/powervs_cluster.go Currently not assigning to myself, feel free to pick up UT for powervs_cluster.go

[Karthik-K-N]

We will add UT for ibmpowervscluster_controller.go file once we finalize and fix the issue #1837 as it involves some code refactoring.

[Karthik-K-N]

If contributing to this issue, Please do comment here with function name to avoid multiple folks working on same thing.

[Shilpa-Gokul]

I am working on adding UT for ReconcileNetwork, ReconcileVPC and ReconcileVPCSubnets function