feat: add StartProcess, StopProcess, KillProcess for system package

system/os.go

@@ -132,3 +132,37 @@ func byteToString(data []byte, charset string) string {
 func GetOsBits() int {
 	return 32 << (^uint(0) >> 63)
 }
+
+// StartProcess start a new process with the specified name and arguments.
+// Play: todo
+func StartProcess(command string, args ...string) (int, error) {
+	cmd := exec.Command(command, args...)
+
+	if err := cmd.Start(); err != nil {
+		return 0, err
+	}
+
+	return cmd.Process.Pid, nil
+}
+
+// StopProcess stop a process by pid.
+// Play: todo
+func StopProcess(pid int) error {
+	process, err := os.FindProcess(pid)
+	if err != nil {
+		return err
+	}
+
+	return process.Signal(os.Kill)
+}
+
+// KillProcess kill a process by pid.
+// Play: todo
+func KillProcess(pid int) error {
+	process, err := os.FindProcess(pid)
+	if err != nil {
+		return err
+	}
+
+	return process.Kill()
+}

system/os_example_test.go

@@ -1,6 +1,9 @@
 package system
 
-import "fmt"
+import (
+	"fmt"
+	"time"
+)
 
 func ExampleSetOsEnv() {
 	err := SetOsEnv("foo", "abc")
@@ -75,3 +78,42 @@ func ExampleGetOsBits() {
 	// Output:
 	// 64
 }
+
+func ExampleStartProcess() {
+	pid, err := StartProcess("sleep", "2")
+	if err != nil {
+		return
+	}
+
+	fmt.Println(pid)
+}
+
+func ExampleStopProcess() {
+	pid, err := StartProcess("sleep", "10")
+	if err != nil {
+		return
+	}
+	time.Sleep(1 * time.Second)
+
+	err = StopProcess(pid)
+
+	fmt.Println(err)
+
+	// Output:
+	// <nil>
+}
+
+func ExampleKillProcess() {
+	pid, err := StartProcess("sleep", "3")
+	if err != nil {
+		return
+	}
+	time.Sleep(1 * time.Second)
+
+	err = KillProcess(pid)
+
+	fmt.Println(err)
+
+	// Output:
+	// <nil>
+}

system/os_test.go

@@ -1,6 +1,7 @@
 package system
 
 import (
+	"os/exec"
 	"strings"
 	"testing"
 
@@ -53,7 +54,9 @@ func TestExecCommand(t *testing.T) {
 	assert := internal.NewAssert(t, "TestExecCommand")
 
 	// linux or mac
-	stdout, stderr, err := ExecCommand("ls")
+	stdout, stderr, err := ExecCommand("ls", func(cmd *exec.Cmd) {
+		cmd.Dir = "/"
+	})
 	t.Log("std out: ", stdout)
 	t.Log("std err: ", stderr)
 	assert.Equal("", stderr)
@@ -74,16 +77,6 @@ func TestExecCommand(t *testing.T) {
 	assert.IsNotNil(err)
 }
 
-// func TestExecCommandWithOption(t *testing.T) {
-// 	assert := internal.NewAssert(t, "TestExecCommandWithOption")
-
-// 	stdout, stderr, err := ExecCommand("ls", WithForeground())
-// 	t.Log("std out: ", stdout)
-// 	t.Log("std err: ", stderr)
-// 	assert.Equal("", stderr)
-// 	assert.IsNil(err)
-// }
-
 func TestGetOsBits(t *testing.T) {
 	t.Parallel()
 
@@ -95,3 +88,40 @@ func TestGetOsBits(t *testing.T) {
 		t.Error("os is not 32 or 64 bits")
 	}
 }
+
+func TestStartProcess(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestStartProcess")
+
+	pid, err := StartProcess("ls", "-a")
+
+	assert.IsNil(err)
+	assert.Equal(true, pid > 0)
+}
+
+func TestKillProcess(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestKillProcess")
+
+	pid, err := StartProcess("ls")
+	assert.IsNil(err)
+	assert.Equal(true, pid > 0)
+
+	err = KillProcess(pid)
+	assert.IsNil(err)
+}
+
+func TestStopProcess(t *testing.T) {
+	t.Parallel()
+
+	assert := internal.NewAssert(t, "TestStopProcess")
+
+	pid, err := StartProcess("ls")
+	assert.IsNil(err)
+	assert.Equal(true, pid > 0)
+
+	err = StopProcess(pid)
+	assert.IsNil(err)
+}