feat(firstword): update solution and test to match new subject

solutions/firstword.go

@@ -0,0 +1,12 @@
+package solutions
+
+import "strings"
+
+func FirstWord(s string) string {
+	words := strings.Fields(s)
+	res := "\n"
+	if len(words) > 0 {
+		res = words[0] + res
+	}
+	return res
+}

tests/firstword_test/main.go

@@ -1,22 +1,30 @@
 package main
 
 import (
-	"github.com/01-edu/go-tests/lib/challenge"
-	"github.com/01-edu/go-tests/lib/chars"
-	"github.com/01-edu/go-tests/lib/random"
+	"fmt"
+	"os"
+	student "student"
 )
 
+var testCases = []struct {
+	in   string
+	want string
+}{
+	{"", "\n"},
+	{"             a as", "a\n"},
+	{"   f     d", "f\n"},
+	{"   asd    ad", "asd\n"},
+	{"   salut !!! ", "salut\n"},
+	{" salut ! ! !", "salut\n"},
+	{"salut ! !", "salut\n"},
+}
+
 func main() {
-	table := append(random.StrSlice(chars.Words),
-		"",
-		"             a as",
-		"   f     d",
-		"   asd    ad",
-		"   salut !!! ",
-		" salut ! ! !",
-		"salut ! !",
-	)
-	for _, s := range table {
-		challenge.Program("firstword", s)
+	for _, tc := range testCases {
+		got := student.FirstWord(tc.in)
+		if got != tc.want {
+			fmt.Printf("FirstWord(%q) = %q instead of %q\n", tc.in, got, tc.want)
+			os.Exit(1)
+		}
 	}
 }