go test case
16 Jun 2018Command
go test ./...: run all test cases in correct directorygo test -cover: display test case coveragego test -run Name: run specific golang test case
test all package
# https://github.com/opencontainers/runc/blob/master/Makefile
_allpackages = $(shell $(GO) list ./... | grep -v vendor)
allpackages = $(if $(__allpackages),,$(eval __allpackages := $$(_allpackages)))$(__allpackages)
go test -timeout 3m -v $(allpackages)
# https://github.com/dockercraft/libcontainer/blob/master/Makefile
GO_PACKAGES = $(shell find . -not \( -wholename ./vendor -prune -o -wholename ./.git -prune \) -name '*.go' -print0 | xargs -0n1 dirname | sort -u)
go test -cover -test.short -v $(GO_PACKAGES)
Test Types
*testing.T: Type T - Testing*testing.B: Type B - Benchmarks*testing.M: Type M - Main
Example
main.go
package main
func Sum(x int, y int) int {
return x + y
}
func main() {
Sum(5, 5)
}
main_test.go
package main
import "testing"
func TestSum(t *testing.T) {
total := Sum(5, 5)
if total != 10 {
t.Errorf("Sum was incorrect, got: %d, want: %d.", total, 10)
}
}
package main
import (
"flag"
"fmt"
"os"
"testing"
)
func setup() {
println("setup")
}
func teardown() {
println("teardown")
}
func TestMain(m *testing.M) {
// call flag.Parse() here if TestMain uses flags
switch os.Getenv("GO_TEST_MODE") {
case "":
setup()
flag.Parse()
exitCode := m.Run()
fmt.Printf("exitCode is %d\n", exitCode)
if exitCode == 0 {
teardown()
}
// Exit
os.Exit(exitCode)
}
}
Tools
gotests
Generate Go tests from your source code.
go get github.com/cweill/gotests/...
run
../../bin/gotests -exported ./
gover
Gather all your *.coverprofile files to send to coveralls.io!
go get github.com/modocache/gover
- Ref
- https://splice.com/blog/lesser-known-features-go-test/
- https://golang.org/pkg/testing/