Add null pointer checks and associated test cases.
diff --git a/java_gen/pre-written/src/test/java/org/projectfloodlight/openflow/types/IPv4AddressTest.java b/java_gen/pre-written/src/test/java/org/projectfloodlight/openflow/types/IPv4AddressTest.java
index d9c6681..975c7d3 100644
--- a/java_gen/pre-written/src/test/java/org/projectfloodlight/openflow/types/IPv4AddressTest.java
+++ b/java_gen/pre-written/src/test/java/org/projectfloodlight/openflow/types/IPv4AddressTest.java
@@ -2,6 +2,7 @@
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;
@@ -193,4 +194,57 @@
assertEquals(IPv4AddressWithMask.of(ipMaskedString), superIp);
}
}
+
+ @Test
+ public void testOfExceptions() {
+ // We check if the message of a caught NPE is set to a useful message
+ // as a hacky way of verifying that we got an NPE thrown by use rather
+ // than one the JVM created for a null access.
+ try {
+ String s = null;
+ IPv4Address.of(s);
+ fail("Should have thrown NullPointerException");
+ } catch (NullPointerException e) {
+ assertNotNull(e.getMessage());
+ }
+ try {
+ byte[] b = null;
+ IPv4Address.of(b);
+ fail("Should have thrown NullPointerException");
+ } catch (NullPointerException e) {
+ assertNotNull(e.getMessage());
+ }
+ try {
+ byte[] b = new byte[3];
+ IPv4Address.of(b);
+ fail("Should have thrown IllegalArgumentException");
+ } catch (IllegalArgumentException e) {
+ // expected
+ }
+ try {
+ byte[] b = new byte[5];
+ IPv4Address.of(b);
+ fail("Should have thrown IllegalArgumentException");
+ } catch (IllegalArgumentException e) {
+ // expected
+ }
+ try {
+ IPv4AddressWithMask.of(null);
+ fail("Should have thrown NullPointerException");
+ } catch (NullPointerException e) {
+ assertNotNull(e.getMessage());
+ }
+ try {
+ IPv4AddressWithMask.of(IPv4Address.of("1.2.3.4"), null);
+ fail("Should have thrown NullPointerException");
+ } catch (NullPointerException e) {
+ assertNotNull(e.getMessage());
+ }
+ try {
+ IPv4AddressWithMask.of(null, IPv4Address.of("255.0.0.0"));
+ fail("Should have thrown NullPointerException");
+ } catch (NullPointerException e) {
+ assertNotNull(e.getMessage());
+ }
+ }
}