Improve test coverage (#3)

main.go

@@ -36,7 +36,7 @@ type config struct {
 
 // Arguments struct stores the arguments passed to cfdtunel such as the profile to use, the command to run and the arguments for that command
 type Arguments struct {
-	profile *string
+	profile string
 	command string
 	args    []string
 }
@@ -53,13 +53,13 @@ func main() {
 	config, err := readIniConfigFile(getHomePathIniFile(iniConfigFile))
 
 	if err != nil {
-		log.Fatalf("An error occured reading your INI file: %v", err.Error())
+		log.Fatalf("An error occurred reading your INI file: %v", err.Error())
 	}
 
-	tunnelConfig, err := config.readConfigSection(*args.profile)
+	tunnelConfig, err := config.readConfigSection(args.profile)
 
 	if err != nil {
-		log.Fatalf("An error occured reading your INI file: %v", err.Error())
+		log.Fatalf("An error occurred reading your INI file: %v", err.Error())
 	}
 	tunnelConfig.setupEnvironmentVariables()
 	cmd := tunnelConfig.startProxyTunnel()
@@ -145,7 +145,7 @@ func (cfg config) readConfigSection(section string) (TunnelConfig, error) {
 	secs, err := cfg.ini.GetSection(section)
 
 	if err != nil {
-		log.Debugf("An error occured: %v", err.Error())
+		log.Debugf("An error occurred: %v", err.Error())
 		return TunnelConfig{}, err
 	}
 
@@ -192,15 +192,14 @@ func flagArguments() Arguments {
 	}
 
 	if *profile == "" {
-		fmt.Println("Usage: cfdtunnel --profile xxx command args")
+		fmt.Println("Usage: cfdtunnel --profile my-profile command args")
 		os.Exit(1)
-		return Arguments{}
 	}
 
 	args := flag.Args()
 
 	return Arguments{
-		profile: profile,
+		profile: *profile,
 		command: args[0],
 		args:    args[1:],
 	}
@@ -210,7 +209,7 @@ func flagArguments() Arguments {
 func checkSubCommandExists(command string) bool {
 	_, err := exec.LookPath(command)
 	if err != nil {
-		log.Errorf("An error occured: %v", err.Error())
+		log.Errorf("An error occurred: %v", err.Error())
 		return false
 	}
 

main_test.go

@@ -1,12 +1,14 @@
 package main
 
 import (
-	"log"
+	"io/ioutil"
 	"os"
 	"os/exec"
 	"path"
 	"testing"
 
+	"log"
+
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/ini.v1"
 )
@@ -130,7 +132,7 @@ func TestTunnelSamePort(t *testing.T) {
 func TestFlagsEmptyArguments(t *testing.T) {
 	// Run the crashing code when FLAG is set
 	if os.Getenv("FLAG") == "1" {
-		// Calls flagArguments withour manipulate os.Args
+		// Calls flagArguments without manipulate os.Args
 		_ = flagArguments()
 		return
 	}
@@ -142,23 +144,45 @@ func TestFlagsEmptyArguments(t *testing.T) {
 
 	// Cast the error as *exec.ExitError and compare the result
 	e, ok := err.(*exec.ExitError)
-	assert.Equal(t, true, ok)
+	assert.True(t, ok)
 	assert.Equal(t, "exit status 1", e.Error())
 }
 
-func TestFlagArguments(t *testing.T) {
+func TestFlagsArguments(t *testing.T) {
 
 	oldArgs := os.Args
 	defer func() { os.Args = oldArgs }()
 
 	os.Args = []string{"rootTest", "--profile", "alias", "subcommand", "arg1", "arg2"}
 	args := flagArguments()
 
-	assert.Equal(t, "alias", *args.profile)
+	assert.Equal(t, "alias", args.profile)
 	assert.Equal(t, "subcommand", args.command)
 	assert.Equal(t, []string{"arg1", "arg2"}, args.args)
 }
 
+func TestFlagsProfileMissing(t *testing.T) {
+	oldArgs := os.Args
+	defer func() { os.Args = oldArgs }()
+
+	// Run the crashing code when FLAG is set
+	if os.Getenv("FLAG") == "1" {
+		os.Args = []string{"rootTest", "subcommand", "arg1", "arg2"}
+		_ = flagArguments()
+		return
+	}
+
+	// Run the test in a subprocess
+	cmd := exec.Command(os.Args[0], "-test.run=TestFlagsProfileMissing")
+	cmd.Env = append(os.Environ(), "FLAG=1")
+	err := cmd.Run()
+
+	// Cast the error as *exec.ExitError and compare the result
+	e, ok := err.(*exec.ExitError)
+	assert.True(t, ok)
+	assert.Equal(t, "exit status 1", e.Error())
+}
+
 func TestSubCommandExists(t *testing.T) {
 
 	assert.True(t, checkSubCommandExists("echo"))
@@ -173,3 +197,49 @@ func TestConfigSectionDoesNotExists(t *testing.T) {
 
 	assert.Error(t, err)
 }
+
+func TestRunSubCommandStdOut(t *testing.T) {
+	args := Arguments{
+		profile: "alias",
+		command: "ls",
+		args:    []string{"README.md"},
+	}
+
+	rescueStdout := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	args.runSubCommand()
+
+	w.Close()
+	out, _ := ioutil.ReadAll(r)
+	os.Stdout = rescueStdout
+
+	assert.Equal(t, "README.md\n\n", string(out))
+}
+
+func TestRunSubCommandMissing(t *testing.T) {
+
+	// Run the crashing code when FLAG is set
+	if os.Getenv("FLAG") == "1" {
+		args := Arguments{
+			profile: "alias",
+			command: "lsssss",
+			args:    nil,
+		}
+		args.runSubCommand()
+
+		return
+	}
+
+	// Run the test in a subprocess
+	cmd := exec.Command(os.Args[0], "-test.run=TestRunSubCommandMissing")
+	cmd.Env = append(os.Environ(), "FLAG=1")
+	err := cmd.Run()
+
+	// Cast the error as *exec.ExitError and compare the result
+	e, ok := err.(*exec.ExitError)
+	assert.True(t, ok)
+	assert.Equal(t, "exit status 1", e.Error())
+
+}