/
main_test.go
215 lines (193 loc) · 4.23 KB
/
main_test.go
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package main
import (
"bytes"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/assert"
)
func setup(t *testing.T) string {
t.Helper()
tmp, err := ioutil.TempDir("", "")
if err != nil {
t.Fatal(err)
}
t.Logf("tmp=%s", tmp)
t.Cleanup(func() {
os.RemoveAll(tmp)
})
if err := cmdRun(tmp, "go", "mod", "init", "example.com/example"); err != nil {
t.Fatal(err)
}
example := []byte(strings.TrimSpace(`
package example
func example() bool {
println("covered")
if false {
println("not covered")
}
return true
}
`))
if err := ioutil.WriteFile(filepath.Join(tmp, "example.go"), example, 0644); err != nil {
t.Fatal(err)
}
exampleTest := []byte(strings.TrimSpace(`
package example
import "testing"
func Test_example(t *testing.T) {
example()
}
`))
if err := ioutil.WriteFile(filepath.Join(tmp, "example_test.go"), exampleTest, 0644); err != nil {
t.Fatal(err)
}
return tmp
}
func chdir(t *testing.T, dir string) {
t.Helper()
wd, err := os.Getwd()
if err != nil {
t.Fatal(err)
}
if err := os.Chdir(dir); err != nil {
t.Fatal(err)
}
t.Cleanup(func() {
if err := os.Chdir(wd); err != nil {
t.Fatal(err)
}
})
}
func Test_main(t *testing.T) {
tmp := setup(t)
if err := cmdRun(tmp, "go", "test", ".", "-v", "-cover", "-coverprofile", "coverage.txt"); err != nil {
t.Fatal(err)
}
if err := cmdRun(tmp, "git", "init"); err != nil {
t.Fatal(err)
}
t.Run("simple", func(t *testing.T) {
want := readFileString(t, "testdata/output.txt")
chdir(t, tmp)
var buf bytes.Buffer
writer = &buf
t.Cleanup(func() {
writer = os.Stdout
})
main()
assert.Equal(t, want, strings.TrimSpace(buf.String()))
})
t.Run("json", func(t *testing.T) {
want := readFileString(t, "testdata/output.json")
chdir(t, tmp)
var buf bytes.Buffer
writer = &buf
t.Cleanup(func() {
writer = os.Stdout
})
output = "json"
t.Cleanup(func() { output = "" })
main()
assert.JSONEq(t, string(want), buf.String())
})
t.Run("markdown", func(t *testing.T) {
want := readFileString(t, "testdata/output.md")
chdir(t, tmp)
var buf bytes.Buffer
writer = &buf
t.Cleanup(func() {
writer = os.Stdout
})
output = "markdown"
t.Cleanup(func() { output = "" })
main()
assert.Equal(t, want, strings.TrimSpace(buf.String()))
})
t.Run("github-actions pull request comment", func(t *testing.T) {
if testing.Short() {
t.Skip()
}
if ci, _ := strconv.ParseBool(os.Getenv("CI")); !ci {
t.Skip()
}
if commentTest, _ := strconv.ParseBool(os.Getenv("PULL_REQUEST_COMMENT_TEST")); !commentTest {
t.Skip()
}
ci = "github-actions"
gitDiffBase = ""
t.Cleanup(func() { ci = ""; gitDiffBase = "origin/master" })
main()
})
}
func readFileString(t *testing.T, filename string) string {
t.Helper()
_want, err := ioutil.ReadFile(filename)
if err != nil {
t.Fatal(err)
}
return strings.ReplaceAll(strings.TrimSpace(string(_want)), "\r\n", "\n")
}
func cmdRun(dir, name string, args ...string) error {
cmd := exec.Command(name, args...)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
cmd.Dir = dir
return cmd.Run()
}
func Test_parseModfile(t *testing.T) {
tmp := setup(t)
if err := os.Chdir(tmp); err != nil {
t.Fatal(err)
}
t.Run("empty", func(t *testing.T) {
m, err := parseModfile()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, m.Path(), "example.com/example")
})
t.Run("specified", func(t *testing.T) {
modFile = "./go.mod"
t.Cleanup(func() { modFile = "" })
m, err := parseModfile()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, m.Path(), "example.com/example")
})
}
func Test_containsDiff(t *testing.T) {
tests := []struct {
name string
filename string
path string
diffs []string
want bool
}{
{
name: "contains",
filename: "example.com/example/main.go",
path: "example.com/example",
diffs: []string{"a.go", "main.go"},
want: true,
},
{
name: "not contains",
filename: "example.com/example/main.go",
path: "example.com/example",
diffs: []string{"a.go", "b.go"},
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := containsDiff(tt.filename, tt.path, tt.diffs)
assert.Equal(t, tt.want, got)
})
}
}