1 files changed, 106 insertions, 0 deletions
diff --git a/core/src/test/java/org/spongycastle/asn1/test/DataGroupHashUnitTest.java b/core/src/test/java/org/spongycastle/asn1/test/DataGroupHashUnitTest.java
new file mode 100644
index 00000000..86d0c4c8
--- /dev/null
+++ b/core/src/test/java/org/spongycastle/asn1/test/DataGroupHashUnitTest.java
@@ -0,0 +1,106 @@
+package org.spongycastle.asn1.test;
+
+import java.io.IOException;
+import java.util.Random;
+
+import org.spongycastle.asn1.ASN1InputStream;
+import org.spongycastle.asn1.ASN1OctetString;
+import org.spongycastle.asn1.ASN1Sequence;
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.icao.DataGroupHash;
+import org.spongycastle.util.test.SimpleTest;
+
+public class DataGroupHashUnitTest 
+    extends SimpleTest
+{
+    public String getName()
+    {
+        return "DataGroupHash";
+    }
+
+    private byte[] generateHash()
+    {
+        Random rand = new Random();
+        byte[] bytes = new byte[20];
+        
+        for (int i = 0; i != bytes.length; i++)
+        {
+            bytes[i] = (byte)rand.nextInt();
+        }
+        
+        return bytes;
+    }
+    
+    public void performTest() 
+        throws Exception
+    {
+        int dataGroupNumber = 1;       
+        ASN1OctetString     dataHash = new DEROctetString(generateHash());
+        DataGroupHash       dg = new DataGroupHash(dataGroupNumber, dataHash);
+
+        checkConstruction(dg, dataGroupNumber, dataHash);
+
+        try
+        {
+            DataGroupHash.getInstance(null);
+        }
+        catch (Exception e)
+        {
+            fail("getInstance() failed to handle null.");
+        }
+
+        try
+        {
+            DataGroupHash.getInstance(new Object());
+            
+            fail("getInstance() failed to detect bad object.");
+        }
+        catch (IllegalArgumentException e)
+        {
+            // expected
+        }
+    }
+
+    private void checkConstruction(
+        DataGroupHash dg,
+        int dataGroupNumber,        
+        ASN1OctetString     dataGroupHashValue) 
+        throws IOException
+    {
+        checkValues(dg, dataGroupNumber, dataGroupHashValue);
+
+        dg = DataGroupHash.getInstance(dg);
+
+        checkValues(dg, dataGroupNumber, dataGroupHashValue);
+
+        ASN1InputStream aIn = new ASN1InputStream(dg.toASN1Object().getEncoded());
+
+        ASN1Sequence seq = (ASN1Sequence)aIn.readObject();
+
+        dg = DataGroupHash.getInstance(seq);
+
+        checkValues(dg, dataGroupNumber, dataGroupHashValue);
+    }
+
+    private void checkValues(
+        DataGroupHash dg,
+        int dataGroupNumber,        
+        ASN1OctetString     dataGroupHashValue)
+    {
+        if (dg.getDataGroupNumber() != dataGroupNumber)
+        {
+            fail("group number don't match.");
+        }
+        
+        if (!dg.getDataGroupHashValue().equals(dataGroupHashValue))
+        {
+            fail("hash value don't match.");
+        }         
+    }
+    
+    public static void main(
+        String[]    args)
+    {
+        runTest(new DataGroupHashUnitTest());
+    }
+}