Add tests for MD5Builder, reformat and clean up code

tests/host/core/test_md5builder.cpp

@@ -0,0 +1,73 @@
+/*
+ test_md5builder.cpp - MD5Builder tests
+ Copyright © 2016 Ivan Grokhotkov
+
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+ */
+
+#include <catch.hpp>
+#include <string.h>
+#include <MD5Builder.h>
+#include <StreamString.h>
+
+TEST_CASE("MD5Builder::add works as expected", "[core][MD5Builder]")
+{
+    MD5Builder builder;
+    builder.begin();
+    builder.add("short");
+    builder.calculate();
+    REQUIRE(builder.toString() == "4f09daa9d95bcb166a302407a0e0babe");
+
+    builder.begin();
+    builder.add("longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong");
+    builder.calculate();
+    REQUIRE(builder.toString() == "9edb67f2b22c604fab13e2fd1d6056d7");
+}
+
+
+TEST_CASE("MD5Builder::addHexString works as expected", "[core][MD5Builder]")
+{
+    MD5Builder builder;
+    builder.begin();
+    builder.addHexString("1234567890abcdeffedcba98765432106469676974616c7369676e61747572656170706c69636174696f6e73");
+    builder.calculate();
+    REQUIRE(builder.toString() == "47b937a6f9f12a4c389fa5854e023efb");
+}
+
+TEST_CASE("MD5Builder::addStream works", "[core][MD5Builder]")
+{
+    MD5Builder builder;
+    const char* str = "MD5Builder::addStream_works_longlonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglonglong";
+    {
+        StreamString stream;
+        stream.print(str);
+        builder.begin();
+        builder.addStream(stream, stream.available());
+        builder.calculate();
+        REQUIRE(builder.toString() == "bc4a2006e9d7787ee15fe3d4ef9cdb46");
+    }
+    {
+        StreamString stream;
+        stream.print(str);
+        builder.begin();
+        builder.addStream(stream, 20);
+        builder.calculate();
+        REQUIRE(builder.toString() == "c9ad2a3d64b9a877831a67b3bfd34228");
+    }
+    {
+        StreamString stream;
+        stream.print(str);
+        builder.begin();
+        builder.addStream(stream, 120);
+        builder.calculate();
+        REQUIRE(builder.toString() == "bc4a2006e9d7787ee15fe3d4ef9cdb46");
+    }
+}