1 files changed, 101 insertions, 0 deletions
diff --git a/reception/src/test/java/org/onap/policy/distribution/reception/parameters/TestReceptionHandlerConfigurationParametersJsonAdapter.java b/reception/src/test/java/org/onap/policy/distribution/reception/parameters/TestReceptionHandlerConfigurationParametersJsonAdapter.java
new file mode 100644
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--- /dev/null
+++ b/reception/src/test/java/org/onap/policy/distribution/reception/parameters/TestReceptionHandlerConfigurationParametersJsonAdapter.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.distribution.reception.parameters;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonSyntaxException;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import org.junit.Test;
+import org.onap.policy.distribution.reception.testclasses.DummyReceptionHandlerParameterGroup;
+
+/**
+ * Class for unit testing ReceptionHandlerConfigurationParametersJsonAdapter class.
+ *
+ * @author Adheli Tavares (adheli.tavares@est.tech)
+ *
+ */
+public class TestReceptionHandlerConfigurationParametersJsonAdapter {
+
+    @Test
+    public void testDeserialize() throws JsonSyntaxException, IOException {
+        final String validJsonFile = "src/test/resources/ReceptionHandlerConfiguration.json";
+        final JsonElement mockJsonElement = JsonParser.parseString(getJsonValues(validJsonFile));
+
+        Gson gson = new GsonBuilder().registerTypeAdapter(ReceptionHandlerConfigurationParameterGroup.class,
+                new ReceptionHandlerConfigurationParametersJsonAdapter()).create();
+
+        ReceptionHandlerConfigurationParameterGroup result =
+                gson.fromJson(mockJsonElement, ReceptionHandlerConfigurationParameterGroup.class);
+
+        assertNotNull(result);
+        assertEquals(result.getClass(), DummyReceptionHandlerParameterGroup.class);
+    }
+
+    @Test
+    public void testDeserialize_shouldThrowExceptionEmptyClassName() throws JsonSyntaxException, IOException {
+        final String jsonFile = "src/test/resources/EmptyClassName.json";
+        String expectedErrorMsg = "parameter \"parameterClassName\" value \"\" invalid in JSON file";
+
+        validateParsing(jsonFile, expectedErrorMsg);
+    }
+
+    @Test
+    public void testDeserialize_shouldThrowExceptionNullClassName() throws JsonSyntaxException, IOException {
+        final String jsonFile = "src/test/resources/NullClassName.json";
+        String expectedErrorMsg = "parameter \"parameterClassName\" value \"null\" invalid in JSON file";
+
+        validateParsing(jsonFile, expectedErrorMsg);
+    }
+
+    @Test
+    public void testDeserialize_shouldThrowExceptionWrongClassName() throws JsonSyntaxException, IOException {
+        final String jsonFile = "src/test/resources/WrongClassName.json";
+        String expectedErrorMsg = "parameter \"parameterClassName\" value "
+                + "\"org.onap.policy.distribution.reception.testclasses.NotExistentClass\", could not find class";
+
+        validateParsing(jsonFile, expectedErrorMsg);
+    }
+
+    private void validateParsing(final String jsonFile, String expectedErrorMsg) throws IOException {
+        final JsonElement mockJsonElement = JsonParser.parseString(getJsonValues(jsonFile));
+
+        Gson gson = new GsonBuilder().registerTypeAdapter(ReceptionHandlerConfigurationParameterGroup.class,
+                new ReceptionHandlerConfigurationParametersJsonAdapter()).create();
+
+        assertThatThrownBy(() -> gson.fromJson(mockJsonElement, ReceptionHandlerConfigurationParameterGroup.class))
+                .isInstanceOf(IllegalArgumentException.class).hasMessage(expectedErrorMsg);
+    }
+
+    private String getJsonValues(String path) throws IOException {
+        return new String(Files.readAllBytes(new File(path).toPath()), StandardCharsets.UTF_8);
+    }
+
+}