BAEL-4848 Update "Java Adapter Pattern" article (#13624)

2023-03-13 03:43:43 +01:00
parent f0f9e25e83
commit 1db057ebc8
11 changed files with 87 additions and 98 deletions
@@ -1,23 +0,0 @@
-package com.baeldung.adapter;
-
-import static org.junit.Assert.assertEquals;
-
-import org.junit.Test;
-
-public class AdapterPatternIntegrationTest {
-    @Test
-    public void givenMovableAdapter_WhenConvertingMPHToKMPH_thenSuccessfullyConverted() {
-        Movable bugattiVeyron = new BugattiVeyron();
-        MovableAdapter bugattiVeyronAdapter = new MovableAdapterImpl(bugattiVeyron);
-        assertEquals(bugattiVeyronAdapter.getSpeed(), 431.30312, 0.00001);
-
-        Movable mcLaren = new McLaren();
-        MovableAdapter mcLarenAdapter = new MovableAdapterImpl(mcLaren);
-        assertEquals(mcLarenAdapter.getSpeed(), 387.85094, 0.00001);
-
-        Movable astonMartin = new AstonMartin();
-        MovableAdapter astonMartinAdapter = new MovableAdapterImpl(astonMartin);
-        assertEquals(astonMartinAdapter.getSpeed(), 354.0548, 0.00001);
-    }
-}
-
@@ -0,0 +1,34 @@
+package com.baeldung.adapter;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+import java.util.StringTokenizer;
+import org.junit.jupiter.api.Test;
+
+class IteratorAdapterUnitTest {
+
+    public static final String STRING_DATA = "Welcome to baeldung.com";
+    private final StringTokenizer tokenizer = new StringTokenizer(STRING_DATA);
+    private final Iterator<String> tokenizerAdapter = new StringTokenizerIteratorAdapter(STRING_DATA);
+    private final List<String> expectedTokensForString = Arrays.asList("Welcome", "to", "baeldung.com");
+
+    @Test
+    void givenTokenizer_thenAdapterProducesCorrectResult() {
+        List<String> actualTokens = new ArrayList<>();
+        new IteratorAdapter(tokenizer).forEachRemaining(s -> actualTokens.add((String) s));
+        assertEquals(expectedTokensForString, actualTokens);
+    }
+
+    @Test
+    void givenTokenizerAdapter_thenIteratorProducesCorrectResult() {
+        List<String> actualTokens = new ArrayList<>();
+        tokenizerAdapter.forEachRemaining(actualTokens::add);
+        assertEquals(expectedTokensForString, actualTokens);
+    }
+
+
+}