Close HttpOpener resources.

metafacture-io/src/main/java/org/metafacture/io/HttpOpener.java

@@ -295,12 +295,16 @@ public void process(final String input) {
             final HttpURLConnection connection = requestBody != null ?
                 doOutput(urlToOpen, requestBody) : doRedirects(urlToOpen);
 
-            final InputStream inputStream = getInputStream(connection);
             final String charset = getContentCharset(connection);
 
-            getReceiver().process(new InputStreamReader(
+            try (
+                    InputStream inputStream = getInputStream(connection);
+                    Reader reader = new InputStreamReader(
                         "gzip".equalsIgnoreCase(connection.getContentEncoding()) ?
-                        new GZIPInputStream(inputStream) : inputStream, charset));
+                        new GZIPInputStream(inputStream) : inputStream, charset)
+            ) {
+                getReceiver().process(reader);
+            }
         }
         catch (final IOException e) {
             throw new MetafactureException(e);

metafacture-io/src/test/java/org/metafacture/io/FileOpenerCompressionTest.java

@@ -93,7 +93,7 @@ public void testOpenCompressedFiles() throws IOException {
             Files.copy(in, file.toPath(), StandardCopyOption.REPLACE_EXISTING);
         }
 
-        FileOpenerTest.assertData(receiver, DATA, file, o -> o.setCompression(compression));
+        TestHelpers.assertFile(receiver, DATA, file, o -> o.setCompression(compression));
     }
 
 }

metafacture-io/src/test/java/org/metafacture/io/FileOpenerTest.java

@@ -25,7 +25,6 @@
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
 import org.mockito.Mock;
-import org.mockito.Mockito;
 import org.mockito.junit.MockitoJUnit;
 import org.mockito.junit.MockitoRule;
 
@@ -40,7 +39,6 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
-import java.util.function.Consumer;
 
 /**
  * Tests for class {@link FileOpener}.
@@ -66,7 +64,7 @@ public void testUtf8IsDefaultEncoding() throws IOException {
         Assume.assumeFalse("Default encoding is UTF-8: It is not possible to test whether FileOpener sets " +
                 "the encoding to UTF-8 correctly.", StandardCharsets.UTF_8.equals(Charset.defaultCharset()));
 
-        assertData(receiver, DATA, createTestFile(), null);
+        TestHelpers.assertFile(receiver, DATA, createTestFile(), null);
     }
 
     @Test
@@ -93,27 +91,10 @@ private void testDecompressConcatenated(final boolean decompressConcatenated) th
         final String data = sb.toString();
         Assert.assertTrue(data.length() + " > " + maxBytes, data.length() > maxBytes);
 
-        assertData(receiver, decompressConcatenated ? data : data.substring(0, maxBytes),
+        TestHelpers.assertFile(receiver, decompressConcatenated ? data : data.substring(0, maxBytes),
                 copyResourceToTempFile("compressed-large.txt.bgzf"), o -> o.setDecompressConcatenated(decompressConcatenated));
     }
 
-    /*package-private*/ static void assertData(final ObjectReceiver<Reader> receiver, final String expected, final File file, final Consumer<FileOpener> consumer) {
-        final StringBuilder sb = new StringBuilder();
-        Mockito.doAnswer(i -> sb.append(ResourceUtil.readAll(i.getArgument(0)))).when(receiver).process(Mockito.any(Reader.class));
-
-        final FileOpener opener = new FileOpener();
-        if (consumer != null) {
-            consumer.accept(opener);
-        }
-
-        opener.setReceiver(receiver);
-        opener.process(file.getAbsolutePath());
-        opener.closeStream();
-
-        Mockito.verify(receiver).process(Mockito.any(Reader.class));
-        Assert.assertEquals(expected, sb.toString());
-    }
-
     private File createTestFile() throws IOException {
         final File file = tempFolder.newFile();
         try (OutputStream stream = new FileOutputStream(file)) {

metafacture-io/src/test/java/org/metafacture/io/HttpOpenerTest.java

@@ -16,15 +16,12 @@
 
 package org.metafacture.io;
 
-import org.metafacture.commons.ResourceUtil;
 import org.metafacture.framework.ObjectReceiver;
 
 import com.github.tomakehurst.wiremock.client.MappingBuilder;
 import com.github.tomakehurst.wiremock.client.ResponseDefinitionBuilder;
 import com.github.tomakehurst.wiremock.client.WireMock;
 import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
-import com.github.tomakehurst.wiremock.http.HttpHeader;
-import com.github.tomakehurst.wiremock.http.HttpHeaders;
 import com.github.tomakehurst.wiremock.http.RequestMethod;
 import com.github.tomakehurst.wiremock.junit.WireMockRule;
 import com.github.tomakehurst.wiremock.matching.RequestPatternBuilder;
@@ -34,10 +31,7 @@
 import org.junit.ComparisonFailure;
 import org.junit.Rule;
 import org.junit.Test;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Captor;
 import org.mockito.Mock;
-import org.mockito.Mockito;
 import org.mockito.junit.MockitoJUnit;
 import org.mockito.junit.MockitoRule;
 
@@ -49,8 +43,6 @@
 import java.util.function.Consumer;
 import java.util.zip.GZIPOutputStream;
 
-import static org.mockito.Mockito.times;
-
 /**
  * Tests for class {@link HttpOpener}.
  *
@@ -92,9 +84,6 @@ public final class HttpOpenerTest {
     @Mock
     private ObjectReceiver<Reader> receiver;
 
-    @Captor
-    private ArgumentCaptor<Reader> processedObject;
-
     @Test
     public void shouldPerformGetRequestWithInputAsUrlByDefault() throws IOException {
         shouldPerformRequest(TEST_URL, HttpOpener.Method.GET, (o, u) -> {});
@@ -341,17 +330,16 @@ private void shouldPerformRequest(final String input, final HttpOpener.Method me
 
         WireMock.stubFor(stub);
 
-        opener.process(String.format(input, baseUrl));
+        TestHelpers.assertReader(receiver, () -> {
+            opener.process(String.format(input, baseUrl));
 
-        // use the opener a second time in a workflow:
-        opener.process(String.format(input, baseUrl));
+            // use the opener a second time in a workflow:
+            opener.process(String.format(input, baseUrl));
 
-        opener.closeStream();
+            opener.closeStream();
+        }, responseBody, responseBody);
 
         WireMock.verify(request);
-
-        Mockito.verify(receiver, times(2)).process(processedObject.capture());
-        Assert.assertEquals(responseBody, ResourceUtil.readAll(processedObject.getValue()));
     }
 
 }

metafacture-io/src/test/java/org/metafacture/io/TestHelpers.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2024 hbz NRW
+ *
+ * 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.metafacture.io;
+
+import org.metafacture.commons.ResourceUtil;
+import org.metafacture.framework.ObjectReceiver;
+
+import org.junit.Assert;
+import org.mockito.Mockito;
+
+import java.io.File;
+import java.io.Reader;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.function.Consumer;
+
+public final class TestHelpers {
+
+    public static void assertFile(final ObjectReceiver<Reader> receiver, final String expected, final File file, final Consumer<FileOpener> consumer) {
+        assertReader(receiver, () -> {
+            final FileOpener opener = new FileOpener();
+            if (consumer != null) {
+                consumer.accept(opener);
+            }
+
+            opener.setReceiver(receiver);
+            opener.process(file.getAbsolutePath());
+            opener.closeStream();
+        }, expected);
+    }
+
+    public static void assertReader(final ObjectReceiver<Reader> receiver, final Runnable runnable, final String... expected) {
+        final List<String> actual = new ArrayList<>();
+        Mockito.doAnswer(i -> actual.add(ResourceUtil.readAll(i.getArgument(0)))).when(receiver).process(Mockito.any(Reader.class));
+
+        runnable.run();
+
+        Mockito.verify(receiver, Mockito.times(expected.length)).process(Mockito.any(Reader.class));
+        Arrays.stream(expected).forEach(i -> Assert.assertEquals(i, actual.remove(0)));
+        Assert.assertEquals(0, actual.size());
+    }
+
+}