Cleanup DigestBuilder and MD5HashGen (#2539)

* Cleanup DigestBuilder and MD5HashGen

* Fix templates

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 72 insertions, 0 deletions

diff --git a/tools/slang-unit-test/unit-test-digest-builder.cpp b/tools/slang-unit-test/unit-test-digest-builder.cpp
new file mode 100644
index 000000000..b89b31a7b
--- /dev/null
+++ b/tools/slang-unit-test/unit-test-digest-builder.cpp
@@ -0,0 +1,72 @@
+// unit-test-digest-utils.cpp
+
+#include "tools/unit-test/slang-unit-test.h"
+
+#include "../../source/core/slang-digest-builder.h"
+#include "../../source/core/slang-digest-util.h"
+
+using namespace Slang;
+
+SLANG_UNIT_TEST(digestBuilder)
+{
+    // Raw numerical values, etc.
+    {
+        DigestBuilder builder;
+
+        int64_t valueA = -1;
+        uint64_t valueB = 1;
+        builder.append(valueA);
+        builder.append(valueB);
+
+        slang::Digest digest = builder.finalize();
+        SLANG_CHECK(DigestUtil::toString(digest) == "5BA171E20898BDD205639013746F2679");
+    }
+
+    // List
+    {
+        DigestBuilder builder;
+
+        List<int64_t> listA;
+        listA.add(1);
+        listA.add(2);
+        listA.add(3);
+        listA.add(4);
+        builder.append(listA);
+
+        slang::Digest digest = builder.finalize();
+        SLANG_CHECK(DigestUtil::toString(digest) == "9F66C130786A1A05E4731F71A3C5F172");
+    }
+
+    // UnownedStringSlice
+    {
+        DigestBuilder builder;
+
+        UnownedStringSlice stringSlice = UnownedStringSlice("String Slice Test");
+        builder.append(stringSlice);
+
+        slang::Digest digest = builder.finalize();
+        SLANG_CHECK(DigestUtil::toString(digest) == "5D6CC58E1824A4DFD0CF57395B603316");
+    }
+
+    // String
+    {
+        DigestBuilder builder;
+
+        String str = String("String Test");
+        builder.append(str);
+
+        slang::Digest digest = builder.finalize();
+        SLANG_CHECK(DigestUtil::toString(digest) == "DF5A79CC2170C7401CF0A506CEB0CE24");
+    }
+
+    // Digest
+    {
+        DigestBuilder builder;
+
+        slang::Digest hash;
+        builder.append(hash);
+
+        slang::Digest digest = builder.finalize();
+        SLANG_CHECK(DigestUtil::toString(digest) == "4AE71336E44BF9BF79D2752E234818A5");
+    }
+}