From 41d45af53d3ddb9aab6da804cfe3c681e5fa7a09 Mon Sep 17 00:00:00 2001
From: Volker Berlin <volker.berlin@googlemail.com>
Date: Sat, 28 Sep 2019 21:31:45 +0200
Subject: [PATCH] Add CRC32 support

---
 .../jwebassembly/runtime/Checksums.java       | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 test/de/inetsoftware/jwebassembly/runtime/Checksums.java

diff --git a/test/de/inetsoftware/jwebassembly/runtime/Checksums.java b/test/de/inetsoftware/jwebassembly/runtime/Checksums.java
new file mode 100644
index 0000000..a18cb2b
--- /dev/null
+++ b/test/de/inetsoftware/jwebassembly/runtime/Checksums.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2019 Volker Berlin (i-net software)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package de.inetsoftware.jwebassembly.runtime;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.zip.CRC32;
+
+import org.junit.ClassRule;
+import org.junit.runners.Parameterized.Parameters;
+
+import de.inetsoftware.jwebassembly.ScriptEngine;
+import de.inetsoftware.jwebassembly.WasmRule;
+import de.inetsoftware.jwebassembly.api.annotation.Export;
+
+/**
+ * @author Volker Berlin
+ */
+public class Checksums extends AbstractBaseTest {
+    
+    @ClassRule
+    public static WasmRule rule = new WasmRule( TestClass.class ); 
+
+    public Checksums( ScriptEngine script, String method, Object[] params ) {
+        super( rule, script, method, params );
+    }
+
+    @Parameters(name="{0}-{1}")
+    public static Collection<Object[]> data() {
+        ArrayList<Object[]> list = new ArrayList<>();
+        for( ScriptEngine script : ScriptEngine.testEngines() ) {
+//            addParam( list, script, "crcUpdate" );
+            addParam( list, script, "crcUupdateBytes" );
+        }
+        rule.setTestParameters( list );
+        return list;
+    }
+
+    static class TestClass {
+
+        // TODO
+//        @Export
+//        static int crcUpdate() {
+//            CRC32 crc = new CRC32();
+//            crc.update( 42 );
+//            return (int)crc.getValue();
+//        }
+
+        @Export
+        static int crcUupdateBytes() {
+            CRC32 crc = new CRC32();
+            byte[] a = new byte[1000];
+            for( int i = 0; i < a.length; i++ ) {
+                a[i] = (byte)i;
+            }
+            crc.update( a );
+            return (int)crc.getValue();
+        }
+    }
+}