BatchProcessorTest

src/test/java/nl/knaw/dans/dvcli/TestUtils.java

@@ -23,6 +23,7 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
+import java.util.stream.Stream;
 
 public class TestUtils {
     public static ListAppender<ILoggingEvent> captureLog(Level error, String loggerName) {
@@ -39,4 +40,14 @@ public static ByteArrayOutputStream captureStdout() {
         System.setOut(new PrintStream(outContent));
         return outContent;
     }
+
+    public static ByteArrayOutputStream captureStderr() {
+        var outContent = new ByteArrayOutputStream();
+        System.setErr(new PrintStream(outContent));
+        return outContent;
+    }
+
+    public static Stream<String> messagesOf(ListAppender<ILoggingEvent> logged) {
+        return logged.list.stream().map(iLoggingEvent -> iLoggingEvent.getLevel() + "  " + iLoggingEvent.getFormattedMessage());
+    }
 }

src/test/java/nl/knaw/dans/dvcli/action/BatchProcessorTest.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2024 DANS - Data Archiving and Networked Services ([email protected])
+ *
+ * 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 nl.knaw.dans.dvcli.action;
+
+import ch.qos.logback.classic.Level;
+import nl.knaw.dans.dvcli.TestUtils;
+import nl.knaw.dans.lib.dataverse.DatasetApi;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import java.io.PrintStream;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class BatchProcessorTest {
+
+    private final PrintStream originalStdout = System.out;
+    private final PrintStream originalStderr = System.err;
+
+    @AfterEach
+    public void tearDown() {
+
+        System.setOut(originalStdout);
+        System.setErr(originalStderr);
+    }
+
+    @Test
+    public void test() {
+        var datasetApi1 = Mockito.mock(DatasetApi.class);
+        var datasetApi2 = Mockito.mock(DatasetApi.class);
+
+        var stdout = TestUtils.captureStdout();
+        var stderr = TestUtils.captureStderr();
+        var logged = TestUtils.captureLog(Level.DEBUG, "nl.knaw.dans");
+
+        BatchProcessor.<DatasetApi, String> builder()
+            .labeledItems(List.of(
+                new Pair<>("1", datasetApi1),
+                new Pair<>("2", datasetApi2)
+            ))
+            .action(Object::toString)
+            .report(new ConsoleReport<>())
+            .delay(1L)
+            .build()
+            .process();
+
+        assertThat(stderr.toString())
+            .isEqualTo("1: OK. 2: OK. ");
+        assertThat(stdout.toString().split("\n"))
+            .containsExactly("INFO  Starting batch processing",
+                "INFO  Processing item 1 of 2",
+                datasetApi1.toString(),
+                "DEBUG Sleeping for 1 ms",
+                "INFO  Processing item 2 of 2",
+                datasetApi2.toString(),
+                "INFO  Finished batch processing"
+            );
+        assertThat(TestUtils.messagesOf(logged))
+            .containsExactly("INFO  Starting batch processing",
+                "INFO  Processing item 1 of 2",
+                "DEBUG  Sleeping for 1 ms",
+                "INFO  Processing item 2 of 2",
+                "INFO  Finished batch processing");
+    }
+
+    @Test
+    public void test_should() {
+        var datasetApi1 = Mockito.mock(DatasetApi.class);
+        var datasetApi2 = Mockito.mock(DatasetApi.class);
+        var datasetApi3 = Mockito.mock(DatasetApi.class);
+
+        var stdout = TestUtils.captureStdout();
+        var stderr = TestUtils.captureStderr();
+        var logged = TestUtils.captureLog(Level.DEBUG, "nl.knaw.dans");
+
+        BatchProcessor.<DatasetApi, String> builder()
+            .labeledItems(List.of(
+                new Pair<>("1", datasetApi1),
+                new Pair<>("2", datasetApi2),
+                new Pair<>("2", datasetApi3)
+            ))
+            .action(datasetApi -> {
+                if (!datasetApi.equals(datasetApi2))
+                    return "ok";
+                else
+                    throw new RuntimeException("test");
+            })
+            .report(new ConsoleReport<>())
+            .delay(1L)
+            .build()
+            .process();
+
+        assertThat(stderr.toString())
+            .isEqualTo("""
+                1: OK. 2: FAILED: Exception type = RuntimeException, message = test
+                2: OK.""" + " "); // java text block trims trailing spaces
+        assertThat(stdout.toString().split("\n"))
+            .containsExactly("INFO  Starting batch processing",
+                "INFO  Processing item 1 of 3",
+                "ok",
+                "DEBUG Sleeping for 1 ms",
+                "INFO  Processing item 2 of 3",
+                "DEBUG Sleeping for 1 ms",
+                "INFO  Processing item 3 of 3",
+                "ok",
+                "INFO  Finished batch processing"
+                );
+            assertThat(TestUtils.messagesOf(logged))
+            .containsExactly("INFO  Starting batch processing",
+                "INFO  Processing item 1 of 3",
+                "DEBUG  Sleeping for 1 ms",
+                "INFO  Processing item 2 of 3",
+                "DEBUG  Sleeping for 1 ms",
+                "INFO  Processing item 3 of 3",
+                "INFO  Finished batch processing");
+    }
+
+}