1 files changed, 67 insertions, 0 deletions
diff --git a/src/test/ui/UtilsTest.java b/src/test/ui/UtilsTest.java
new file mode 100644
index 0000000..a7b4a52
--- /dev/null
+++ b/src/test/ui/UtilsTest.java
@@ -0,0 +1,67 @@
+package ui;
+
+import model.asn1.exceptions.ParseException;
+import org.junit.jupiter.api.Test;
+
+import java.nio.charset.StandardCharsets;
+import java.util.stream.IntStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class UtilsTest {
+    @Test
+    void testByteToByte() {
+        final byte[] primitive = new byte[]{ 1, 1, 4, 5, 1, 4 };
+        final Byte[] boxed = new Byte[]{ 1, 1, 4, 5, 1, 4 };
+        assertArrayEquals(primitive, Utils.byteToByte(boxed));
+        assertArrayEquals(boxed, Utils.byteToByte(primitive));
+    }
+
+    @Test
+    void testBytesToInt() throws ParseException {
+        assertEquals(1, Utils.bytesToInt(new Byte[]{ 1 }));
+        assertEquals(257, Utils.bytesToInt(new Byte[]{ 1, 1 }));
+        assertThrows(ParseException.class, () -> Utils.bytesToInt(new Byte[]{ 1, -1, -1, -1, -1 }));
+    }
+
+    @Test
+    void testValToByte() {
+        assertArrayEquals(new Byte[]{ 0 },
+                Utils.valToByte(0));
+        assertArrayEquals(new Byte[]{ 1 },
+                Utils.valToByte(1));
+        assertArrayEquals(new Byte[]{ 1, 1 },
+                Utils.valToByte(257));
+        assertArrayEquals(new Byte[]{ -1 },
+                Utils.valToByte(-1));
+    }
+
+    @Test
+    void testParsePEM() throws ParseException {
+        assertArrayEquals(IntStream.range(0, 48).mapToObj(i -> (byte) 1).toArray(Byte[]::new),
+                Utils.parsePEM(Utils.byteToByte(("-----BEGIN BLABLA-----\n" +
+                        "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB\n" +
+                        "-----END BLABLA-----").getBytes(StandardCharsets.UTF_8)),
+                        "BLABLA"));
+        assertThrows(ParseException.class, () -> {
+            Utils.parsePEM(Utils.byteToByte(("-----BEGIN BLABLA-----\n" +
+                            "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB\n" +
+                            "-----END BLABLA-----").getBytes(StandardCharsets.UTF_8)),
+                    "LALA");
+        });
+        assertThrows(ParseException.class, () -> {
+            Utils.parsePEM(Utils.byteToByte(("-----BEGIN BLABLA-----" +
+                            "AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB" +
+                            "-----END BLABLA-----").getBytes(StandardCharsets.UTF_8)),
+                    "BLABLA");
+        });
+    }
+
+    @Test
+    void testToPEM() {
+        assertEquals("-----BEGIN ABC-----\n" +
+                "AQ==\n" +
+                "-----END ABC-----",
+                Utils.toPEM(new Byte[]{ 0x1 }, "ABC"));
+    }
+}