1 files changed, 101 insertions, 0 deletions
diff --git a/core/src/test/java/org/spongycastle/asn1/test/DERUTF8StringTest.java b/core/src/test/java/org/spongycastle/asn1/test/DERUTF8StringTest.java
new file mode 100644
index 00000000..bd284b66
--- /dev/null
+++ b/core/src/test/java/org/spongycastle/asn1/test/DERUTF8StringTest.java
@@ -0,0 +1,101 @@
+package org.spongycastle.asn1.test;
+
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.DERUTF8String;
+import org.spongycastle.util.Arrays;
+import org.spongycastle.util.Strings;
+import org.spongycastle.util.test.SimpleTestResult;
+import org.spongycastle.util.test.Test;
+import org.spongycastle.util.test.TestResult;
+
+public class DERUTF8StringTest 
+    implements Test
+{
+
+    /**
+     * Unicode code point U+10400 coded as surrogate in two native Java UTF-16
+     * code units
+     */
+    private final static char[] glyph1_utf16 = { 0xd801, 0xdc00 };
+
+    /**
+     * U+10400 coded in UTF-8
+     */
+    private final static byte[] glyph1_utf8 = { (byte)0xF0, (byte)0x90, (byte)0x90, (byte)0x80 };
+
+    /**
+     * Unicode code point U+6771 in native Java UTF-16
+     */
+    private final static char[] glyph2_utf16 = { 0x6771 };
+
+    /**
+     * U+6771 coded in UTF-8
+     */
+    private final static byte[] glyph2_utf8 = { (byte)0xE6, (byte)0x9D, (byte)0xB1 };
+
+    /**
+     * Unicode code point U+00DF in native Java UTF-16
+     */
+    private final static char[] glyph3_utf16 = { 0x00DF };
+
+    /**
+     * U+00DF coded in UTF-8
+     */
+    private final static byte[] glyph3_utf8 = { (byte)0xC3, (byte)0x9f };
+
+    /**
+     * Unicode code point U+0041 in native Java UTF-16
+     */
+    private final static char[] glyph4_utf16 = { 0x0041 };
+
+    /**
+     * U+0041 coded in UTF-8
+     */
+    private final static byte[] glyph4_utf8 = { 0x41 };
+
+    private final static byte[][] glyphs_utf8 = { glyph1_utf8, glyph2_utf8, glyph3_utf8, glyph4_utf8 };
+
+    private final static char[][] glyphs_utf16 = { glyph1_utf16, glyph2_utf16, glyph3_utf16, glyph4_utf16 };
+
+    public TestResult perform()
+    {
+        try
+        {
+            for (int i = 0; i < glyphs_utf16.length; i++)
+            {
+                String s = new String(glyphs_utf16[i]);
+                byte[] b1 = new DERUTF8String(s).getEncoded();
+                byte temp[] = new byte[b1.length - 2];
+                System.arraycopy(b1, 2, temp, 0, b1.length - 2);
+                byte[] b2 = new DERUTF8String(Strings.fromUTF8ByteArray(new DEROctetString(temp).getOctets())).getEncoded();
+                if (!Arrays.areEqual(b1, b2))
+                {
+                    return new SimpleTestResult(false, getName() + ": failed UTF-8 encoding and decoding");
+                }
+                if (!Arrays.areEqual(temp, glyphs_utf8[i]))
+                {
+                    return new SimpleTestResult(false, getName() + ": failed UTF-8 encoding and decoding");
+                }
+            }
+        }
+        catch (Exception e)
+        {
+            return new SimpleTestResult(false, getName() + ": failed with Exception " + e.getMessage());
+        }
+
+        return new SimpleTestResult(true, getName() + ": Okay");
+    }
+
+    public String getName()
+    {
+        return "DERUTF8String";
+    }
+
+    public static void main(String[] args)
+    {
+        DERUTF8StringTest test = new DERUTF8StringTest();
+        TestResult result = test.perform();
+
+        System.out.println(result);
+    }
+}