Add safe slug generation func in package id

id/random_test.go

@@ -0,0 +1,19 @@
+package id
+
+import "testing"
+
+func TestGenSafeUniqueSlug(t *testing.T) {
+	slug := "slug"
+	r := map[string]bool{}
+
+	for i := 0; i < 1000; i++ {
+		s := GenSafeUniqueSlug(slug)
+		if s == slug {
+			t.Errorf("Got same slug as inputted!")
+		}
+		if _, ok := r[s]; ok {
+			t.Errorf("#%d: slug %s was already generated in testing.", i, s)
+		}
+		r[s] = true
+	}
+}