[LIB-10] Tests for Requesters
[snooker-score-api.git] / src / test / java / org / hedgecode / snooker / request / AbstractRequesterTest.java
diff --git a/src/test/java/org/hedgecode/snooker/request/AbstractRequesterTest.java b/src/test/java/org/hedgecode/snooker/request/AbstractRequesterTest.java
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+/*
+ * Copyright (c) 2017-2020. Developed by Hedgecode.
+ *
+ * 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.
+ */
+
+package org.hedgecode.snooker.request;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.junit.Assert;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+/**
+ * Base Requester Test.
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public abstract class AbstractRequesterTest extends Assert {
+
+    protected static final int CORRECT_ID = 1;
+    protected static final int INCORRECT_ID = 0;
+
+    protected static final String REQUEST_URL = "http://api.snooker.org/";
+
+    private static final String REQUEST_URL_METHOD_NAME = "getRequestUrl";
+
+    @Rule
+    public ExpectedException thrown = ExpectedException.none();
+
+    protected abstract Requester getRequester();
+
+    protected abstract RequestParams getCorrectRequestParams();
+
+    protected abstract RequestParams getIncorrectRequestParams();
+
+    protected abstract String getCorrectRequestUrl();
+
+    @Test
+    public void testRequestTypes() throws Exception {
+        for (RequestType requestType : RequestType.values()) {
+            assertNotNull(
+                    requestType.requester()
+            );
+        }
+    }
+
+    @Test
+    public void testCorrectRequestById() throws Exception {
+        String requestUrl = invokeRequestUrl(CORRECT_ID);
+        assertEquals(
+                getCorrectRequestUrl(), requestUrl
+        );
+    }
+
+    @Test
+    public void testCorrectRequestByParams() throws Exception {
+        String requestUrl = invokeRequestUrl(
+                getCorrectRequestParams()
+        );
+        assertEquals(
+                getCorrectRequestUrl(), requestUrl
+        );
+    }
+
+    @Test
+    public void testIncorrectRequestById() throws Exception {
+        thrown.expect(InvocationTargetException.class);
+        invokeRequestUrl(INCORRECT_ID);
+        thrown = ExpectedException.none();
+    }
+
+    @Test
+    public void testIncorrectRequestByParams() throws Exception {
+        thrown.expect(InvocationTargetException.class);
+        invokeRequestUrl(
+                getIncorrectRequestParams()
+        );
+        thrown = ExpectedException.none();
+    }
+
+    private String invokeRequestUrl(int id) throws Exception {
+        Requester requester = getRequester();
+        Method requestMethod = requester.getClass().getDeclaredMethod(
+                REQUEST_URL_METHOD_NAME, int.class
+        );
+        assertEquals(
+                String.class, requestMethod.getReturnType()
+        );
+        requestMethod.setAccessible(true);
+        return (String) requestMethod.invoke(requester, id);
+    }
+
+    private String invokeRequestUrl(RequestParams params) throws Exception {
+        Requester requester = getRequester();
+        Method requestMethod = requester.getClass().getDeclaredMethod(
+                REQUEST_URL_METHOD_NAME, RequestParams.class
+        );
+        assertEquals(
+                String.class, requestMethod.getReturnType()
+        );
+        requestMethod.setAccessible(true);
+        return (String) requestMethod.invoke(requester, params);
+    }
+
+    private boolean isHostAvailable() {
+        try {
+            URL url = new URL(REQUEST_URL);
+            HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();
+            httpConnection.setRequestMethod("HEAD");
+            return httpConnection.getResponseCode() == HttpURLConnection.HTTP_OK;
+        } catch (Exception ignored) {
+        }
+        return false;
+    }
+
+}