1 files changed, 79 insertions, 0 deletions
diff --git a/src/test/model/asn1/IA5StringTest.java b/src/test/model/asn1/IA5StringTest.java
new file mode 100644
index 0000000..dfaa1aa
--- /dev/null
+++ b/src/test/model/asn1/IA5StringTest.java
@@ -0,0 +1,79 @@
+package model.asn1;
+
+import model.asn1.exceptions.ParseException;
+import model.asn1.parsing.BytesReader;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class IA5StringTest {
+    private String stringToTest = "";
+
+    @BeforeEach
+    void setup() {
+        stringToTest = IntStream.range(0, 127)
+                .mapToObj(Character::toString)
+                .collect(Collectors.joining());
+    }
+
+    @Test
+    void testAcceptedString() throws ParseException {
+        assertEquals(stringToTest,
+                new IA5String(IA5String.TAG, null, stringToTest)
+                        .getString());
+    }
+
+    @Test
+    void testIllegalStrings() {
+        assertThrows(ParseException.class,
+                () -> new IA5String(IA5String.TAG, null,
+                        stringToTest + new String(new byte[]{ -128 }, StandardCharsets.UTF_8)));
+        assertThrows(ParseException.class,
+                () -> new IA5String(IA5String.TAG, null,
+                        stringToTest + new String(new byte[]{ -1 }, StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    void testEncode() throws ParseException {
+        assertArrayEquals(
+                new Byte[] { 0x00, 0x01, 0x02 },
+                new IA5String(IA5String.TAG, null, new String(new byte[]{ 0, 1, 2}, StandardCharsets.UTF_8))
+                        .encodeValueDER());
+        assertArrayEquals(
+                new Byte[] {
+                        0x16, 0x02, // Tag - Length
+                        0x68, 0x69 // Value
+                }, new IA5String(IA5String.TAG, null, "hi").encodeDER());
+        assertArrayEquals(
+                new Byte[] {
+                        -85, 0x05, // Parent Tag - Length
+                        0x16, 0x03, // Inner Tag - Length
+                        0x68, 0x69, 0x69 // Value
+                }, new IA5String(IA5String.TAG,
+                        new Tag(TagClass.CONTEXT_SPECIFIC, true, 11),
+                        "hii").encodeDER());
+    }
+
+    @Test
+    void testParse() throws ParseException {
+        assertEquals("123",
+                new IA5String(new BytesReader(new Byte[]{ 0x16, 3, '1', '2', '3' }), false)
+                        .getString());
+        assertEquals("",
+                new IA5String(new BytesReader(new Byte[]{ 0x16, 0 }), false)
+                        .getString());
+    }
+
+    @Test
+    void testParseFail() {
+        assertThrows(ParseException.class,  () ->
+                new IA5String(new BytesReader(new Byte[]{ 0x16, 3, '1', '2' }), false));
+        assertThrows(ParseException.class,  () ->
+                new IA5String(new BytesReader(new Byte[]{ 0x16, 2, '1',  -128 }), false));
+    }
+}