feat: add MkdirAll function support

command.go

@@ -21,6 +21,7 @@ type Execer interface {
 	RunCommandWithBuffer(name, dir string, stdout, stderr *bytes.Buffer, args ...string) error
 	RunCommandWithIO(name, dir string, stdout, stderr io.Writer, args ...string) (err error)
 	SystemCall(name string, argv []string, envv []string) (err error)
+	MkdirAll(path string, perm os.FileMode) error
 	OS() string
 	Arch() string
 }
@@ -85,6 +86,11 @@ func (e DefaultExecer) RunCommandWithIO(name, dir string, stdout, stderr io.Writ
 	return
 }
 
+// MkdirAll is the wrapper of os.MkdirAll
+func (e DefaultExecer) MkdirAll(path string, perm os.FileMode) error {
+	return os.MkdirAll(path, perm)
+}
+
 // OS returns the os name
 func (e DefaultExecer) OS() string {
 	return runtime.GOOS

command_test.go

@@ -94,3 +94,9 @@ func TestRunCommandAndReturn(t *testing.T) {
 	assert.NotNil(t, err)
 	assert.Equal(t, "go fake: unknown command\nRun 'go help' for usage.\n", result)
 }
+
+func TestMkdirAll(t *testing.T) {
+	ex := &DefaultExecer{}
+	err := ex.MkdirAll(os.TempDir(), 0755)
+	assert.NoError(t, err)
+}

fake-command.go

@@ -3,6 +3,7 @@ package exec
 import (
 	"bytes"
 	"io"
+	"os"
 )
 
 // FakeExecer is for the unit test purposes
@@ -66,6 +67,11 @@ func (f FakeExecer) SystemCall(name string, argv []string, envv []string) error
 	return f.ExpectError
 }
 
+// MkdirAll is the wrapper of os.MkdirAll
+func (f FakeExecer) MkdirAll(path string, perm os.FileMode) error {
+	return f.ExpectError
+}
+
 // OS returns the os name
 func (f FakeExecer) OS() string {
 	return f.ExpectOS

fake-command_test.go

@@ -48,4 +48,5 @@ func TestLookPath(t *testing.T) {
 	result, err = fakeWithErr.RunCommandAndReturn("", "")
 	assert.Equal(t, "outputerror", result)
 	assert.NotNil(t, err)
+	assert.Error(t, fakeWithErr.MkdirAll("", 0))
 }