diff --git a/src/test/java/net/thauvin/erik/mobibot/modules/ModuleExceptionTest.java b/src/test/java/net/thauvin/erik/mobibot/modules/ModuleExceptionTest.java
new file mode 100644
index 0000000..1d9cee5
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+++ b/src/test/java/net/thauvin/erik/mobibot/modules/ModuleExceptionTest.java
@@ -0,0 +1,76 @@
+/*
+ * ModuleExceptionTest.java
+ *
+ * Copyright (c) 2004-2019, Erik C. Thauvin (erik@thauvin.net)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ *   Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ *   Neither the name of this project nor the names of its contributors may be
+ *   used to endorse or promote products derived from this software without
+ *   specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.thauvin.erik.mobibot.modules;
+
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+
+import java.io.IOException;
+import java.lang.reflect.Method;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * The <code>ModuleExceptionTest</code> class.
+ *
+ * @author <a href="https://erik.thauvin.net/" target="_blank">Erik C. Thauvin</a>
+ * @created 2019-04-09
+ * @since 1.0
+ */
+public class ModuleExceptionTest {
+    @DataProvider(name = "dp")
+    Object[][] createData(Method m) {
+        System.out.println(m.getName());  // print test method name
+        return new Object[][]{new Object[]{new ModuleException("debugMessage", "message",
+            new IOException("Secret URL http://foo.com?apiKey=sec&userID=me"))},
+            new Object[]{new ModuleException("debugMessage", "message")}
+        };
+    }
+
+    @Test(dataProvider = "dp")
+    final void testGetDebugMessage(ModuleException e) {
+        assertThat(e.getDebugMessage()).as("get debug message").isEqualTo("debugMessage");
+    }
+
+    @Test(dataProvider = "dp")
+    final void testGetMessage(ModuleException e) {
+        assertThat(e.getMessage()).as("get message").isEqualTo("message");
+    }
+
+    @Test(dataProvider = "dp")
+    final void testGetStanitizedMessage(ModuleException e) {
+        if (e.hasCause()) {
+            assertThat(e.getSanitizedMessage()).as("get sanitzed url")
+                .contains("http://foo.com?apiKey=[3]&userID=[2]");
+        }
+    }
+}