feat: pkg-util-kubectl Enhancement

[jxs1211]

Signed-off-by: xian-jie.shen 327411586@qq.com

Pre-Checklist

Note: please complete ALL items in the following checklist.

• I have read through the CONTRIBUTING.md documentation.
• My code has the necessary comments and documentation (if needed).
• I have added relevant tests

Description

• try to add ut for the package

Related Issues

see #833 for the details

New Behavior (screenshots if needed)

[going@dev kubectl]$ go test -race -cover  -coverprofile=./coverage.out -timeout=10m -short -v
=== RUN   TestKubeCreate
=== RUN   TestKubeCreate/base
2022-07-18 09:04:50 !! [ERROR]  Failed to exec: < /usr/local/bin/kubectl create -f nginx-deployment.yaml >.
2022-07-18 09:04:50 !! [ERROR]  Exec logs: < The connection to the server localhost:8080 was refused - did you specify the right host or port?
 >. Got error: exit status 1.
--- PASS: TestKubeCreate (0.07s)
    --- PASS: TestKubeCreate/base (0.07s)
=== RUN   TestKubeApply
=== RUN   TestKubeApply/base
2022-07-18 09:04:50 !! [ERROR]  Failed to exec: < /usr/local/bin/kubectl apply -f nginx-deployment.yaml >.
2022-07-18 09:04:50 !! [ERROR]  Exec logs: < The connection to the server localhost:8080 was refused - did you specify the right host or port?
 >. Got error: exit status 1.
--- PASS: TestKubeApply (0.06s)
    --- PASS: TestKubeApply/base (0.06s)
=== RUN   TestKubeDelete
=== RUN   TestKubeDelete/base
2022-07-18 09:04:50 !! [ERROR]  Failed to exec: < /usr/local/bin/kubectl delete -f nginx-deployment.yaml >.
2022-07-18 09:04:50 !! [ERROR]  Exec logs: < error: the path "nginx-deployment.yaml" does not exist
 >. Got error: exit status 1.
--- PASS: TestKubeDelete (0.05s)
    --- PASS: TestKubeDelete/base (0.05s)
=== RUN   Test_kubectlAction
=== RUN   Test_kubectlAction/base
2022-07-18 09:04:50 !! [ERROR]  Failed to exec: < /usr/local/bin/kubectl apply -f nginx-deployment.yaml >.
2022-07-18 09:04:50 !! [ERROR]  Exec logs: < The connection to the server localhost:8080 was refused - did you specify the right host or port?
 >. Got error: exit status 1.
--- PASS: Test_kubectlAction (0.06s)
    --- PASS: Test_kubectlAction/base (0.06s)
PASS
coverage: 81.8% of statements

[jxs1211]

@HXCGIT @steinliber my local environment doesn't have kubectl cmd so that the test case can't cover the left part below, how do you think about this circumstance, should we try to cover the left part or leave it to something like the e2e test?

[xavier-hou]

@jxs1211 I think we can leave it alone. First, the function is very simple with no complicated and error-prone operations. Besides, it's hard to handle with unit test.

[steinliber]

Great job. Thanks for your test