test: improve test coverage of XdrInt

Acked-by: Paul Millar
Target: master

oncrpc4j-core/src/test/java/org/dcache/oncrpc4j/xdr/XdrIntTest.java

@@ -0,0 +1,82 @@
+package org.dcache.oncrpc4j.xdr;
+
+import java.io.IOException;
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class XdrIntTest {
+
+
+    @Test
+    public void testDecode() throws IOException {
+
+        int value = 17;
+
+        XdrInt xInt = new XdrInt();
+        try(Xdr xdr = new Xdr(8)) {
+            xdr.beginEncoding();
+            xdr.xdrEncodeInt(value);
+
+            xdr.endEncoding();
+
+            xdr.beginDecoding();
+            xInt.xdrDecode(xdr);
+
+            assertEquals("invalid value decode", value, xInt.intValue());
+
+        }
+    }
+
+    @Test
+    public void testEncode() throws IOException {
+
+
+        XdrInt xInt = new XdrInt(17);
+        try (Xdr xdr = new Xdr(8)) {
+            xdr.beginEncoding();
+            xInt.xdrEncode(xdr);
+
+            xdr.endEncoding();
+
+            xdr.beginDecoding();
+
+            assertEquals("invalid value decoded", xInt.intValue(), xdr.xdrDecodeInt());
+
+        }
+    }
+
+    @Test
+    public void testEncodeWellKnown() throws IOException {
+
+        byte[] data = new byte[] {
+            0x0, 0x0, 0x0, 0x11 // big endian encoded 17
+        };
+
+        XdrInt xInt = new XdrInt(17);
+        try (Xdr xdr = new Xdr(8)) {
+            xdr.beginEncoding();
+            xInt.xdrEncode(xdr);
+
+            xdr.endEncoding();
+            assertArrayEquals(data, xdr.getBytes());
+        }
+    }
+
+
+    @Test
+    public void testDecodeWellKnown() throws IOException {
+
+        byte[] data = new byte[]{
+            0x0, 0x0, 0x0, 0x11 // big endian encoded 17
+        };
+
+        try (Xdr xdr = new Xdr(data)) {
+            xdr.beginDecoding();
+            XdrInt xInt = new XdrInt();
+            xInt.xdrDecode(xdr);
+
+            assertEquals(17, xInt.intValue());
+        }
+    }
+
+}