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Develop Environment

We develop inside a container by using VS Code Remote Container.

Prerequirements

How to use VSCode.

  1. Startup VSCode.
  2. Open Command Palette(Menu [View]->[Command Palette])
  3. Select Remote-COntainers: Open Folder in Container
  4. Select cloned repository directory.

Edit Code

Ensure that no error and no warning.

go build . 
go fmt ./...  
golangci-lint run 
go test -v ./...

Testing

e2e Test

before running,you should mount passenger directory at /sock directory.

root@842ff56c6f6f:/workspace# go build .
root@842ff56c6f6f:/workspace# E2E=true go test ./test/e2e/
ok      github.com/rakutentech/passenger-go-exporter/test/e2e   0.151s
root@842ff56c6f6f:/workspace#

All Test Caverage

root@842ff56c6f6f:/workspace# go test -coverprofile=cover.out -cover ./...  && go tool cover -html=cover.out -o cover.html
ok      github.com/rakutentech/passenger-go-exporter    0.039s  coverage: 90.5% of statements
ok      github.com/rakutentech/passenger-go-exporter/logging    0.032s  coverage: 100.0% of statements
ok      github.com/rakutentech/passenger-go-exporter/metric     0.010s  coverage: 100.0% of statements
ok      github.com/rakutentech/passenger-go-exporter/passenger  0.011s  coverage: 67.7% of statements
ok      github.com/rakutentech/passenger-go-exporter/test/e2e   0.007s  coverage: [no statements]
root@842ff56c6f6f:/workspace#

If passenger application started and mounted /sock directory,please set USE_PASSENGER variable.

root@842ff56c6f6f:/workspace# USE_PASSENGER=true go test -coverprofile=cover.out -cover ./...  && go tool cover -html=cover.out -o cover.html
ok      github.com/rakutentech/passenger-go-exporter    0.047s  coverage: 90.5% of statements
ok      github.com/rakutentech/passenger-go-exporter/logging    0.028s  coverage: 100.0% of statements
ok      github.com/rakutentech/passenger-go-exporter/metric     0.022s  coverage: 100.0% of statements
ok      github.com/rakutentech/passenger-go-exporter/passenger  0.017s  coverage: 95.2% of statements
ok      github.com/rakutentech/passenger-go-exporter/test/e2e   0.007s  coverage: [no statements]
root@842ff56c6f6f:/workspace#

HTML Report

go test -coverprofile=cover.out -cover ./... \
 && go tool cover -html=cover.out -o cover.html