Fix test files and subject

go/tests/displayfile_test/displayfile_correct/main.go

@@ -9,16 +9,13 @@ import (
 func main() {
 	if len(os.Args) < 2 {
 		fmt.Println("File name missing")
-		return
-	}
-	if len(os.Args) > 2 {
+	} else if len(os.Args) > 2 {
 		fmt.Println("Too many arguments")
-		return
-	}
-	fileName := os.Args[1]
-	data, err := ioutil.ReadFile(fileName)
-	if err != nil {
-		panic(err)
+	} else {
+		b, err := ioutil.ReadFile(os.Args[1])
+		if err != nil {
+			panic(err)
+		}
+		os.Stdout.Write(b)
 	}
-	os.Stdout.Write(data)
 }

go/tests/displayfile_test/main.go

@@ -1,19 +1,19 @@
 package main
 
 import (
+	"io/ioutil"
 	"os"
 	"strings"
 
-	"github.com/01-edu/public/go/lib"
+	"lib"
 )
 
 func main() {
-	pathFileName := "./student/displayfile/quest8.txt"
-	_, err := os.Stat(pathFileName)
-	if err != nil {
-		lib.Fatal(err)
+	fileName := "quest8.txt"
+	if err := ioutil.WriteFile(fileName, []byte("Almost there!!\n"), os.ModePerm); err != nil {
+		panic(err)
 	}
-	table := []string{"", pathFileName, "quest8.txt asdsada"}
+	table := []string{"", fileName, fileName + " asdsada"}
 	for _, s := range table {
 		lib.ChallengeMain("displayfile", strings.Fields(s)...)
 	}

subjects/displayfile.en.md

@@ -4,20 +4,13 @@
 
 Write a program that displays, on the standard output, the content of a file given as argument.
 
-- Create a file `quest8.txt` and write into it the sentence `Almost there!!`
-
-- The argument of the program in this case should be, `quest8.txt`.
-
-- In case of error the program should print one the below messages accordingly:
-  - `File name missing`.
-  - `Too many arguments`.
-
 ### Usage :
 
 ```console
 student@ubuntu:~/[[ROOT]]/displayfile$ go build
 student@ubuntu:~/[[ROOT]]/displayfile$ ./displayfile
 File name missing
+student@ubuntu:~/[[ROOT]]/displayfile$ echo "Almost there!!" > quest8.txt
 student@ubuntu:~/[[ROOT]]/displayfile$ ./displayfile quest8.txt main.go
 Too many arguments
 student@ubuntu:~/[[ROOT]]/displayfile$ ./displayfile quest8.txt