Add tests for exception.

api/src/test/java/net/solarnetwork/io/modbus/test/ModbusValidationExceptionTests.java

@@ -0,0 +1,82 @@
+/* ==================================================================
+ * ModbusValidationExceptionTests.java - 28/08/2024 10:10:10 am
+ *
+ * Copyright 2024 SolarNetwork.net Dev Team
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ * ==================================================================
+ */
+
+package net.solarnetwork.io.modbus.test;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.nullValue;
+import static org.hamcrest.Matchers.sameInstance;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+import net.solarnetwork.io.modbus.ModbusValidationException;
+
+/**
+ * Test cases for the {@link ModbusValidationException} class.
+ *
+ * @author matt
+ * @version 1.0
+ */
+public class ModbusValidationExceptionTests {
+
+	@Test
+	public void construct_message() {
+		// GIVEN
+		final String m = UUID.randomUUID().toString();
+
+		// WHEN
+		ModbusValidationException e = new ModbusValidationException(m);
+
+		// THEN
+		assertThat("Message preserved", e.getMessage(), is(equalTo(m)));
+		assertThat("No cause", e.getCause(), is(nullValue()));
+	}
+
+	@Test
+	public void construct_cause() {
+		// GIVEN
+		final Throwable t = new Throwable(UUID.randomUUID().toString());
+
+		// WHEN
+		ModbusValidationException e = new ModbusValidationException(t);
+
+		// THEN
+		assertThat("Message from cause", e.getMessage(), is(t.toString()));
+		assertThat("Cause preserved", e.getCause(), is(sameInstance(t)));
+	}
+
+	@Test
+	public void construct_messageAndCause() {
+		// GIVEN
+		final String m = UUID.randomUUID().toString();
+		final Throwable t = new Throwable();
+
+		// WHEN
+		ModbusValidationException e = new ModbusValidationException(m, t);
+
+		// THEN
+		assertThat("Message preserved", e.getMessage(), is(equalTo(m)));
+		assertThat("Cause preserved", e.getCause(), is(sameInstance(t)));
+	}
+
+}