diff --git a/runtime/src/main/java/dev/ionfusion/runtime/_private/cover/CoverageDatabase.java b/runtime/src/main/java/dev/ionfusion/runtime/_private/cover/CoverageDatabase.java
index a42d64e3..1856a6b7 100644
--- a/runtime/src/main/java/dev/ionfusion/runtime/_private/cover/CoverageDatabase.java
+++ b/runtime/src/main/java/dev/ionfusion/runtime/_private/cover/CoverageDatabase.java
@@ -9,6 +9,7 @@
 import static java.nio.file.Files.isRegularFile;
 import static java.nio.file.Files.newDirectoryStream;
 
+import com.amazon.ion.IonException;
 import com.amazon.ion.IonReader;
 import com.amazon.ion.IonType;
 import com.amazon.ion.IonWriter;
@@ -584,7 +585,7 @@ private void loadSession(Path session)
                 }
             }
         }
-        catch (IOException e)
+        catch (IOException | IonException e)
         {
             String msg = "Error reading coverage data at " + session;
             throw new IOException(msg, e);
diff --git a/runtime/src/test/java/dev/ionfusion/fusion/cli/CliTestCase.java b/runtime/src/test/java/dev/ionfusion/fusion/cli/CliTestCase.java
index 82d2b591..563188d4 100644
--- a/runtime/src/test/java/dev/ionfusion/fusion/cli/CliTestCase.java
+++ b/runtime/src/test/java/dev/ionfusion/fusion/cli/CliTestCase.java
@@ -28,10 +28,16 @@ void run(int expectedErrorCode, String... commandLine)
     {
         int errorCode = execute(commandLine);
 
-        assertEquals(expectedErrorCode, errorCode, "error code");
-
         stdoutText = stdoutToString();
         stderrText = stderrToString();
+
+        if (expectedErrorCode != errorCode)
+        {
+            dumpStdout();
+            dumpStderr();
+        }
+
+        assertEquals(expectedErrorCode, errorCode, "error code");
     }
 
     private int execute(String... commandLine)
diff --git a/testing/src/main/java/dev/ionfusion/testing/Reflect.java b/testing/src/main/java/dev/ionfusion/testing/Reflect.java
index 9f108910..015d8774 100644
--- a/testing/src/main/java/dev/ionfusion/testing/Reflect.java
+++ b/testing/src/main/java/dev/ionfusion/testing/Reflect.java
@@ -4,6 +4,7 @@
 package dev.ionfusion.testing;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 import java.beans.IntrospectionException;
 import java.beans.Introspector;
@@ -91,6 +92,10 @@ public static void assertEqualProperties(Object expected, Object actual)
             if (prop.getName().equals("class")) continue;
 
             Method readMethod = prop.getReadMethod();
+            assertNotNull(readMethod,
+                          "No public getter for property " + prop.getName() +
+                          " on " + expected.getClass().getName());
+
             Object expectedPropertyValue = invoke(expected, readMethod);
             Object actualPropertyValue   = invoke(actual,   readMethod);
 
diff --git a/testing/src/main/java/dev/ionfusion/testing/StdioTestCase.java b/testing/src/main/java/dev/ionfusion/testing/StdioTestCase.java
index c102ef05..b46daa78 100644
--- a/testing/src/main/java/dev/ionfusion/testing/StdioTestCase.java
+++ b/testing/src/main/java/dev/ionfusion/testing/StdioTestCase.java
@@ -79,6 +79,21 @@ protected String stderrToString()
     }
 
 
+    protected void dumpStdout()
+    {
+        System.out.println("🔻stdout");
+        System.out.print(stdoutToString());
+        System.out.println("🔺stdout");
+    }
+
+    protected void dumpStderr()
+    {
+        System.out.println("🔻stderr");
+        System.out.print(stderrToString());
+        System.out.println("🔺stderr");
+    }
+
+
     private String toString(ByteArrayOutputStream bytes)
     {
         try