wagner-fisher & werner algorithms working

werner_test.go

@@ -0,0 +1,20 @@
+package editdistance
+
+import "testing"
+
+func TestWerner(t *testing.T) {
+
+	a := "a b c"
+	b := "a b d"
+	diff := Werner(a, b)
+	if diff != 1 {
+		t.Errorf("Werner was incorrect, got %d, want %d.", diff, 1)
+	}
+
+	a = "Mary had a little lamb little lamb little lamb."
+	b = "Marry had a little lamb little lab little lamb."
+	diff = Werner(a, b)
+	if diff != 2 {
+		t.Errorf("Werner was incorrect, got %d, want %d.", diff, 2)
+	}
+}