fix: fix ExecCommand bug forwindows

system/os_test.go

@@ -44,21 +44,26 @@ func TestOsEnvOperation(t *testing.T) {
 func TestExecCommand(t *testing.T) {
 	assert := internal.NewAssert(t, "TestExecCommand")
 
-	out, errout, err := ExecCommand("ls")
-	t.Log("std out: ", out)
-	t.Log("std err: ", errout)
+	// linux or mac
+	stdout, stderr, err := ExecCommand("ls")
+	t.Log("std out: ", stdout)
+	t.Log("std err: ", stderr)
+	assert.Equal("", stderr)
 	assert.IsNil(err)
 
-	out, errout, err = ExecCommand("abc")
-	t.Log("std out: ", out)
-	t.Log("std err: ", errout)
-	if err != nil {
-		t.Logf("error: %v\n", err)
+	// windows
+	stdout, stderr, err = ExecCommand("dir")
+	t.Log("std out: ", stdout)
+	t.Log("std err: ", stderr)
+	if IsWindows() {
+		assert.IsNil(err)
 	}
 
-	if !IsWindows() {
-		assert.IsNotNil(err)
-	}
+	// error command
+	stdout, stderr, err = ExecCommand("abc")
+	t.Log("std out: ", stdout)
+	t.Log("std err: ", stderr)
+	assert.IsNotNil(err)
 }
 
 func TestGetOsBits(t *testing.T) {