Add test cases for ThrowError mediator

Add test cases for ThrowError mediator
Related to wso2/issues/3843

Author: GDLMadushanka

integration/mediation-tests/tests-mediator-1/src/test/java/org/wso2/carbon/esb/mediator/test/v2/ThrowMediatorTestCase.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2025, WSO2 LLC. (https://www.wso2.com) All Rights Reserved.
+ *
+ * WSO2 LLC. licenses this file to you under the Apache License,
+ * Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ *  under the License.
+ */
+package org.wso2.carbon.esb.mediator.test.v2;
+
+import org.apache.http.HttpResponse;
+import org.apache.http.util.EntityUtils;
+import org.testng.Assert;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+import org.wso2.esb.integration.common.utils.CarbonLogReader;
+import org.wso2.esb.integration.common.utils.ESBIntegrationTest;
+import org.wso2.esb.integration.common.utils.clients.SimpleHttpClient;
+
+import java.io.IOException;
+
+/**
+ * Test case for the Throw mediator.
+ */
+public class ThrowMediatorTestCase extends ESBIntegrationTest {
+
+    SimpleHttpClient httpClient = new SimpleHttpClient();
+
+    @BeforeClass(alwaysRun = true)
+    public void init() throws Exception {
+        super.init();
+    }
+
+    @Test(groups = {"wso2.esb"}, description = "Testing ThrowError mediator")
+    public void testThrowErrorMediator() throws IOException, InterruptedException {
+
+        CarbonLogReader carbonLogReader = new CarbonLogReader();
+        carbonLogReader.start();
+
+        String serviceURL = getMainSequenceURL() + "testThrowError";
+        HttpResponse httpResponse = httpClient.doGet(serviceURL, null);
+        Assert.assertEquals(httpResponse.getStatusLine().getStatusCode(), 202, "Response code mismatched");
+        EntityUtils.consumeQuietly(httpResponse.getEntity());
+
+        boolean logLine = carbonLogReader
+                .checkForLog("ERROR_CODE = ERROR_TYPE, ERROR_MESSAGE = Error message from expression", DEFAULT_TIMEOUT);
+        Assert.assertTrue(logLine, "ThrowError mediator log not found in the log");
+
+        carbonLogReader.stop();
+    }
+
+    @AfterClass(alwaysRun = true)
+    private void destroy() throws Exception {
+        super.cleanup();
+    }
+}

integration/mediation-tests/tests-mediator-1/src/test/resources/artifacts/ESB/server/repository/deployment/server/synapse-configs/default/api/TestThrowErrorMediatorAPI.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2025, WSO2 LLC. (https://www.wso2.com) All Rights Reserved.
+  ~
+  ~ WSO2 LLC. licenses this file to you under the Apache License,
+  ~ Version 2.0 (the "License"); you may not use this file except
+  ~ in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~ http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied. See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  ~
+  -->
+<api context="/testThrowError" name="TestThrowErrorMediatorAPI" xmlns="http://ws.apache.org/ns/synapse">
+    <resource methods="GET">
+        <inSequence>
+            <variable name="ERROR_MSG" value="Error message from expression"/>
+            <throwError type="ERROR_TYPE" errorMessage="{${var.ERROR_MSG}}"/>
+        </inSequence>
+        <faultSequence>
+            <log level="full">
+                <property name="ERROR_CODE" expression="get-property('ERROR_CODE')"/>
+                <property name="ERROR_MESSAGE" expression="get-property('ERROR_MESSAGE')"/>
+            </log>
+            <drop/>
+        </faultSequence>
+    </resource>
+</api>