chore: add make option to create test coverage reports (#659)

Author: rubenhoenle

.gitignore

@@ -11,4 +11,8 @@ dist/
 
 # Go workspace file
 go.work
-go.work.sum
+go.work.sum
+
+# Test coverage reports
+coverage.out
+coverage.html

CONTRIBUTION.md

@@ -31,6 +31,7 @@ These commands can be executed from the project root:
 - `make lint`: lint the code
 - `make generate-docs`: generate Markdown documentation for every command
 - `make test`: run unit tests
+- `make coverage`: create unit test coverage report (output file: `coverage.html`)
 
 ### Repository structure
 

Makefile

@@ -33,6 +33,12 @@ test:
 	@echo ">> Running tests for the CLI application"
 	@go test ./... -count=1
 
+# Test coverage
+coverage:
+	@echo ">> Creating test coverage report for the CLI application"
+	@go test ./... -coverprofile=coverage.out || true
+	@go tool cover -html=coverage.out -o coverage.html
+
 # Generate docs
 generate-docs:
 	@echo ">> Generating docs..."