iluwatar#355 abstract document test

Author: qza

abstract-document/src/test/java/com/iluwatar/abstractdocument/AbstractDocumentTest.java

@@ -0,0 +1,48 @@
+package com.iluwatar.abstractdocument;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Stream;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertNotNull;
+
+public class AbstractDocumentTest {
+
+    private static final String KEY = "key";
+    private static final Object VALUE = "value";
+
+    private class DocumentImplementation extends AbstractDocument {
+
+        DocumentImplementation(Map<String, Object> properties) {
+            super(properties);
+        }
+    }
+
+    private DocumentImplementation document = new DocumentImplementation(new HashMap<>());
+
+    @Test
+    public void shouldPutAndGetValue() {
+        document.put(KEY, VALUE);
+        assertEquals(VALUE, document.get(KEY));
+        System.out.println(document);
+    }
+
+    @Test
+    public void shouldRetrieveChildren() {
+        Map<String,Object> child1 = new HashMap<>();
+        Map<String,Object> child2 = new HashMap<>();
+        List<Map<String, Object>> children = Arrays.asList(child1, child2);
+
+        document.put(KEY, children);
+
+        Stream<DocumentImplementation> childrenStream = document.children(KEY, DocumentImplementation::new);
+        assertNotNull(children);
+        assertEquals(2, childrenStream.count());
+    }
+
+}