Change hasher interface

onlyskin · onlyskin · commit 83f3b64e4282 · 2017-12-18T17:58:25.000+02:00
diff --git a/src/main/java/httpserver/Hasher.java b/src/main/java/httpserver/Hasher.java
@@ -4,6 +4,10 @@
 import java.security.NoSuchAlgorithmException;
 
 public class Hasher {
+    public boolean matches(byte[] input, String hash) {
+        return getHash(input).equals(hash);
+    }
+
     public String getHash(byte[] input) {
         MessageDigest messageDigest = null;
         try {
diff --git a/src/test/java/httpserver/HasherTest.java b/src/test/java/httpserver/HasherTest.java
@@ -12,4 +12,15 @@ public void returnsHashForBytes() throws Exception {
         assertEquals("dc50a0d27dda2eee9f65644cd7e4c9cf11de8bec",
                 hasher.getHash(input));
     }
+
+    @Test
+    public void matchesBytesToHash() throws Exception {
+        Hasher hasher = new Hasher();
+        byte[] input = "default content".getBytes();
+        String hash = "dc50a0d27dda2eee9f65644cd7e4c9cf11de8bec";
+        String bad_hash = "5c36acad75b78b82be6d9cbbd6143ab7e0cc04b0";
+
+        assertTrue(hasher.matches(input, hash));
+        assertFalse(hasher.matches(input, bad_hash));
+    }
 }
