diff --git a/src/test/java/net/logicsquad/pal/PALTest.java b/src/test/java/net/logicsquad/pal/PALTest.java
index c2efd89..dc1894b 100644
--- a/src/test/java/net/logicsquad/pal/PALTest.java
+++ b/src/test/java/net/logicsquad/pal/PALTest.java
@@ -18,7 +18,7 @@
  * @author paulh
  */
 public class PALTest {
-	private static final List<String> INPUTS = List.of(
+	private static final List<String> NON_INTERACTIVE_INPUTS = List.of(
 	"BASICS",
 	"BOOLS",
 	"INC",
@@ -43,9 +43,21 @@ public class PALTest {
 	"SIGd",
 	"STRINGPARSE");
 
+	private static final List<String> INTERACTIVE_INPUTS = List.of(
+	"FACTITER",
+	"FACTREC",
+	"LAB",
+	"OPR-19",
+	"OPR-22",
+	"OPR-23",
+	"SIGe",
+	"SIGf",
+	"SIGg",
+	"SIGh");
+	
 	@Test
 	public void nonInteractiveTests() throws IOException {
-		for (String input : INPUTS) {
+		for (String input : NON_INTERACTIVE_INPUTS) {
 			ByteArrayOutputStream baos = new ByteArrayOutputStream();
 			System.setOut(new PrintStream(baos));
 			System.setErr(new PrintStream(baos));
@@ -59,4 +71,23 @@ public void nonInteractiveTests() throws IOException {
 		}
 		return;
 	}
+
+	@Test
+	public void interactiveTests() throws IOException {
+		for (String input : INTERACTIVE_INPUTS) {
+			ByteArrayOutputStream baos = new ByteArrayOutputStream();
+			System.setOut(new PrintStream(baos));
+			System.setErr(new PrintStream(baos));
+			InputStream response = PALTest.class.getResourceAsStream("/interactive/" + input + ".in");
+			System.setIn(response);
+			InputStream is = PALTest.class.getResourceAsStream("/interactive/" + input);
+			PAL pal = new PAL(is);
+			pal.execute();
+			baos.flush();
+			String output = new String(baos.toByteArray());
+			String expected = new String(PALTest.class.getResourceAsStream("/interactive/" + input + ".ref").readAllBytes(), StandardCharsets.UTF_8);
+			assertEquals(expected, output);
+		}
+		return;
+	}
 }
diff --git a/src/test/resources/interactive/SIGe.ref b/src/test/resources/interactive/SIGe.ref
index f3ff4a0..6bace3d 100644
--- a/src/test/resources/interactive/SIGe.ref
+++ b/src/test/resources/interactive/SIGe.ref
@@ -4,7 +4,7 @@ pTwo exh: exception 0.
 Main exh: exception 0.
 
 Runtime Error:
-test/interactive/SIGe:146:Exception #0 never handled!
+CODE:146:Exception #0 never handled!
 SIG 0 0
 
 Stack dump:
diff --git a/src/test/resources/interactive/SIGf.ref b/src/test/resources/interactive/SIGf.ref
index fbbceea..ea7f5e6 100644
--- a/src/test/resources/interactive/SIGf.ref
+++ b/src/test/resources/interactive/SIGf.ref
@@ -1,7 +1,7 @@
 Enter the exception type.
 
 Runtime Error:
-test/interactive/SIGf:18:A Program Abort signal was raised.
+CODE:18:A Program Abort signal was raised.
 SIG 0 1
 
 Stack dump:
diff --git a/src/test/resources/interactive/SIGg.ref b/src/test/resources/interactive/SIGg.ref
index 4f23ead..25cdea2 100644
--- a/src/test/resources/interactive/SIGg.ref
+++ b/src/test/resources/interactive/SIGg.ref
@@ -6,7 +6,7 @@ pTwo exh: exception 8.
 Main exh: exception 8.
 
 Runtime Error:
-test/interactive/SIGg:167:Exception #8 never handled!
+CODE:167:Exception #8 never handled!
 SIG 0 0
 
 Stack dump:
diff --git a/src/test/resources/interactive/SIGh.ref b/src/test/resources/interactive/SIGh.ref
index f08e622..f3a1816 100644
--- a/src/test/resources/interactive/SIGh.ref
+++ b/src/test/resources/interactive/SIGh.ref
@@ -1,6 +1,6 @@
 
 Runtime Error:
-test/interactive/SIGh:4:Exception #4 never handled!
+CODE:4:Exception #4 never handled!
 SIG 0 0
 
 Stack dump: