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>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/test/model/asn1/PrintableStringTest.java b/src/test/model/asn1/PrintableStringTest.java
new file mode 100644
index 0000000..f46f400
--- /dev/null
+++ b/src/test/model/asn1/PrintableStringTest.java
@@ -0,0 +1,71 @@
+package model.asn1;
+
+import model.asn1.exceptions.ParseException;
+import model.asn1.parsing.BytesReader;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class PrintableStringTest {
+    private final String ILLEGAL_CHARS_TO_TEST =
+            "<>\\[]{}@!*&^%$#_|`~";
+
+    @Test
+    void testAcceptedString() throws ParseException {
+        final PrintableString string =
+                new PrintableString(PrintableString.TAG, null, "0123456789abCdExYz '()+,-./:=?");
+        assertEquals("0123456789abCdExYz '()+,-./:=?", string.getString());
+    }
+
+    @Test
+    void testIllegalStrings() {
+        ILLEGAL_CHARS_TO_TEST.chars()
+                .forEach(c ->
+                    assertThrows(ParseException.class,
+                            () -> new PrintableString(PrintableString.TAG, null, Character.toString(c)),
+                            String.format("Expected failing validation by char '%c'.", c))
+                );
+    }
+
+    @Test
+    void testEncode() throws ParseException {
+        assertArrayEquals(
+                new Byte[] { 0x68, 0x68, 0x68 },
+                new PrintableString(PrintableString.TAG, null, "hhh").encodeValueDER());
+        assertArrayEquals(
+                new Byte[] {
+                        0x13, 0x02, // Tag - Length
+                        0x68, 0x69 // Value
+                }, new PrintableString(PrintableString.TAG, null, "hi").encodeDER());
+        assertArrayEquals(
+                new Byte[] {
+                        -86, 0x05, // Parent Tag - Length
+                        0x13, 0x03, // Inner Tag - Length
+                        0x68, 0x69, 0x69 // Value
+                }, new PrintableString(PrintableString.TAG,
+                        new Tag(TagClass.CONTEXT_SPECIFIC, true, 10),
+                        "hii").encodeDER());
+    }
+
+    @Test
+    void testParse() throws ParseException {
+        assertEquals("123",
+                new PrintableString(new BytesReader(new Byte[]{ 0x13, 3, '1', '2', '3' }), false)
+                        .getString());
+        assertEquals("",
+                new PrintableString(new BytesReader(new Byte[]{ 0x13, 0, '1', '2', '3' }), false)
+                        .getString());
+    }
+
+    @Test
+    void testParseFail() {
+        // EOF
+        assertThrows(ParseException.class, () ->
+                new PrintableString(new BytesReader(new Byte[]{ 0x13, 1 }), false));
+        // Illegal chars
+        assertThrows(ParseException.class, () ->
+                new PrintableString(new BytesReader(new Byte[]{ 0x13, 2, '1', '*' }), false));
+        assertThrows(ParseException.class, () ->
+                new PrintableString(new BytesReader(new Byte[]{ 0x13, 2, '1', '@' }), false));
+    }
+}