add a very basic test

Makefile

@@ -6,3 +6,6 @@ honk: *.go
 
 clean:
 	rm -f honk
+
+test:
+	go test

fun_test.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestObfusbreak(t *testing.T) {
+	input := `link to https://example.com/ with **bold** text`
+	output := `link to <a href="https://example.com/">https://example.com/</a> with <b>bold</b> text`
+
+	tmp := obfusbreak(input)
+	if tmp != output {
+		t.Errorf("%s is not %s", tmp, output)
+	}
+}