feature: Add context object pattern (#2304)

* Add context object pattern and corresponding tests * Update context pattern * Add README, class diagram, puml file. Add toString method in ServiceContext.java. Add tests for coverage. * Improvements: Remove plugin in pom file Add comments in app.java Change local variable keyword to var in app.java Use lombok for getters, setters and tostring Change method signature in context object * Refreshing environment-1 * Reconfigure pom file. Co-authored-by: Alvis Chan <u7287079@edu.anu.au> Co-authored-by: u7287079 <u7287079@anu.edu.au>
2026-05-15 06:58:41 +00:00 · 2022-12-29 20:17:28 +11:00
parent 695e12379d
commit e223459db8
12 changed files with 498 additions and 0 deletions
@@ -0,0 +1,66 @@
+package com.iluwatar.contect.object;
+
+import com.iluwatar.context.object.LayerA;
+import com.iluwatar.context.object.LayerB;
+import com.iluwatar.context.object.LayerC;
+import com.iluwatar.context.object.ServiceContext;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+/**
+ * Date: 10/24/2022 - 3:18
+ *
+ * @author Chak Chan
+ */
+public class ServiceContextTest {
+
+    private static final String SERVICE = "SERVICE";
+
+    private LayerA layerA;
+
+    @BeforeEach
+    void initiateLayerA() {
+        this.layerA = new LayerA();
+    }
+
+    @Test
+    void testSameContextPassedBetweenLayers() {
+        ServiceContext context1 = layerA.getContext();
+        var layerB = new LayerB(layerA);
+        ServiceContext context2 = layerB.getContext();
+        var layerC = new LayerC(layerB);
+        ServiceContext context3 = layerC.getContext();
+
+        assertSame(context1, context2);
+        assertSame(context2, context3);
+        assertSame(context3, context1);
+    }
+
+    @Test
+    void testScopedDataPassedBetweenLayers() {
+        layerA.addAccountInfo(SERVICE);
+        var layerB = new LayerB(layerA);
+        var layerC = new LayerC(layerB);
+        layerC.addSearchInfo(SERVICE);
+        ServiceContext context = layerC.getContext();
+
+        assertEquals(SERVICE,context.getAccountService());
+        assertNull(context.getSessionService());
+        assertEquals(SERVICE,context.getSearchService());
+    }
+
+    @Test
+    void testToString() {
+        assertEquals(layerA.getContext().toString(),"ServiceContext(AccountService=null, SessionService=null, SearchService=null)");
+        layerA.addAccountInfo(SERVICE);
+        assertEquals(layerA.getContext().toString(), "ServiceContext(AccountService=SERVICE, SessionService=null, SearchService=null)");
+        var layerB = new LayerB(layerA);
+        layerB.addSessionInfo(SERVICE);
+        var layerC = new LayerC(layerB);
+        assertEquals(layerC.getContext().toString(), "ServiceContext(AccountService=SERVICE, SessionService=SERVICE, SearchService=null)");
+    }
+}