From d342a45d98c4795b3a3fe1aaef5236ad4a782b55 Mon Sep 17 00:00:00 2001
From: Yuuta Liang <yuutaw@students.cs.ubc.ca>
Date: Thu, 12 Oct 2023 12:10:33 +0800
Subject: Implement data structures from X.680, X.501, X.509, and PKCS#10, with
 X.690 encoding / decoding support

The implementation took four days, and it is still a little bit rough. Updated version should arrive soon.

Signed-off-by: Yuuta Liang <yuutaw@students.cs.ubc.ca>
---
 src/test/model/asn1/UTF8StringTest.java | 64 +++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 src/test/model/asn1/UTF8StringTest.java

(limited to 'src/test/model/asn1/UTF8StringTest.java')

diff --git a/src/test/model/asn1/UTF8StringTest.java b/src/test/model/asn1/UTF8StringTest.java
new file mode 100644
index 0000000..a2518ae
--- /dev/null
+++ b/src/test/model/asn1/UTF8StringTest.java
@@ -0,0 +1,64 @@
+package model.asn1;
+
+import model.asn1.exceptions.ParseException;
+import model.asn1.parsing.BytesReader;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class UTF8StringTest {
+    private static final String[] UTF8_CHARS = new String[] {
+            new String(new byte[]{ -16, -97, -113, -77, -17, -72, -113, -30,
+                    -128, -115, -30, -102, -89, -17, -72, -113 }, StandardCharsets.UTF_8),
+            new String(new byte[]{ -16, -97, -112, -79 }, StandardCharsets.UTF_8)
+    };
+
+    @Test
+    void testAcceptedString() throws ParseException {
+        final ASN1String string =
+                new UTF8String(PrintableString.TAG, null, "0123456789abCdExYz '()+,-./:=?*@" +
+                        String.join("", UTF8_CHARS));
+        assertEquals("0123456789abCdExYz '()+,-./:=?*@" + String.join("", UTF8_CHARS),
+                string.getString());
+    }
+
+    @Test
+    void testEncode() throws ParseException {
+        assertArrayEquals(
+                new Byte[]{
+                        -16, -97, -113, -77, -17, -72, -113, -30,
+                        -128, -115, -30, -102, -89, -17, -72, -113,
+                        -16, -97, -112, -79
+                }, new UTF8String(UTF8String.TAG, null, UTF8_CHARS[0] + UTF8_CHARS[1])
+                        .encodeValueDER());
+        assertArrayEquals(
+                new Byte[] {
+                        0x0C, 6, // Tag - Length
+                        0x68, 0x69, // Value
+                        -16, -97, -112, -79
+                }, new UTF8String(UTF8String.TAG, null, "hi" + UTF8_CHARS[1]).encodeDER());
+    }
+
+    @Test
+    void testParse() throws ParseException {
+        assertEquals(UTF8_CHARS[0],
+                new UTF8String(new BytesReader(new Byte[]{ 0x0C, 16,
+                        -16, -97, -113, -77, -17, -72, -113, -30,
+                        -128, -115, -30, -102, -89, -17, -72, -113
+                }), false).getString());
+        assertEquals("",
+                new UTF8String(new BytesReader(new Byte[]{ 0x0C, 0, '1', '2', '3' }), false)
+                        .getString());
+    }
+
+    @Test
+    void testParseFail() {
+        // EOF
+        assertThrows(ParseException.class, () ->
+                new UTF8String(new BytesReader(new Byte[]{ 0x0C, 1 }), false));
+    }
+}
-- 
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