#58 Add test for having the extra args substitution in the middle of …

…the command

Also updated the doc.

README.md

@@ -145,14 +145,17 @@ Confirm to run "redeploy" command on [host-name] - yes/no or y/n:
 
 #### Pass extra arguments to the command
 
-Any extra arguments passed to the the `run` command will be then passed to the actual command to run. Here the example:
+Any extra arguments passed to the the `run` command will be then passed to the actual command to run replacing the
+substitution `%s` in the command name from the config file.
+
+Here is the example:
 
 ```
 # commands file
 ...
 [logs]
 workingdir=/opt/app/logs
-command=tail -n 10
+command=tail -n 10 %s
 ...
 ```
 
@@ -163,7 +166,8 @@ vmx run host-name logs -f rest.log
 ```
 
 it will be interpreted as `tail -n 10 -f rest.log` (i.e. all extra arguments are passed to the `command` defined in the
-`commands` file).
+`commands` file, more precisely replacing the `%s` placeholder, so it can be in any place of the command, not only in
+the end).
 
 #### Running the ad-hoc command
 

command/command_test.go

@@ -37,28 +37,34 @@ func TestGetCommand(t *testing.T) {
 func TestGetCommandExtraArgs(t *testing.T) {
 	config.Init("")
 	followFlags := []string{"", "-f", "--follow"}
+	commandsData := []map[string]string{
+		{"name": "logs-extra1", "extra": "rest.log", "command": "tail -f -n 10 logs/rest.log"},
+		{"name": "logs-extra2", "extra": "5", "command": "tail -f -n 5 logs/app.log"},
+	}
 	for _, followFlag := range followFlags {
-		commandText := "logs-extra"
-		extraText := "rest.log"
-		arguments := []string{"dev", commandText, extraText}
-		flags := flag.FlagSet{}
-		follow := false
-		if followFlag != "" {
-			flags.Bool("follow", false, "")
-			follow = true
-			arguments = append([]string{"--", followFlag}, arguments...)
-		}
-		flags.Parse(arguments)
-		app := cli.NewApp()
-		context := cli.NewContext(app, &flags, nil)
-		command := getCommand(context, follow)
-		expectedCommand := core.Command{
-			Name:       "logs-extra",
-			Command:    "tail -f -n 10 logs/" + extraText,
-			WorkingDir: "",
-		}
-		if command != expectedCommand {
-			t.Errorf("Command should be %v, but got %v", expectedCommand, command)
+		for _, commandData := range commandsData {
+			commandText := commandData["name"]
+			extraText := commandData["extra"]
+			arguments := []string{"dev", commandText, extraText}
+			flags := flag.FlagSet{}
+			follow := false
+			if followFlag != "" {
+				flags.Bool("follow", false, "")
+				follow = true
+				arguments = append([]string{"--", followFlag}, arguments...)
+			}
+			flags.Parse(arguments)
+			app := cli.NewApp()
+			context := cli.NewContext(app, &flags, nil)
+			command := getCommand(context, follow)
+			expectedCommand := core.Command{
+				Name:       commandData["name"],
+				Command:    commandData["command"],
+				WorkingDir: "",
+			}
+			if command != expectedCommand {
+				t.Errorf("Command should be %v, but got %v", expectedCommand, command)
+			}
 		}
 	}
 }

config/config_test.go

@@ -39,11 +39,16 @@ func TestReadConfig(t *testing.T) {
 			Command:    "df -h",
 			WorkingDir: "",
 		},
-		"logs-extra": {
-			Name:       "logs-extra",
+		"logs-extra1": {
+			Name:       "logs-extra1",
 			Command:    "tail -f -n 10 logs/%s",
 			WorkingDir: "",
 		},
+		"logs-extra2": {
+			Name:       "logs-extra2",
+			Command:    "tail -f -n %s logs/app.log",
+			WorkingDir: "",
+		},
 	}
 	if diff := deep.Equal(commands, expected); diff != nil {
 		t.Error(diff)

test/config/commands

@@ -15,5 +15,8 @@ command=./redeploy.sh
 [disk-space]
 command=df -h
 
-[logs-extra]
+[logs-extra1]
 command=tail -f -n 10 logs/%s
+
+[logs-extra2]
+command=tail -f -n %s logs/app.log