feature: #2151 Feature/mvi pattern (#2177)

* #2151 add module and pom.xml * #2151 add Calculator Actions * #2151 add remaining mvi pattern classes (actions already implemented) * #2151 add Main and unit tests * add README.md and class diagrams * #2151 add module and pom.xml * #2151 add Calculator Actions * #2151 add remaining mvi pattern classes (actions already implemented) * #2151 add Main and unit tests * add README.md and class diagrams * fixes for lint errors * #2151 add module and pom.xml * #2151 add Calculator Actions * #2151 add remaining mvi pattern classes (actions already implemented) * #2151 add Main and unit tests * add README.md and class diagrams * fixes for lint errors * use Lombok @Data decorator and decouple View from ViewModel * add comments and documentation * fix checkstyle, the smart switch syntax was breaking checkstyle, so I had to change it back
2026-05-17 04:59:21 +00:00 · 2023-01-21 10:45:07 +01:00
parent 6b0a90ee61
commit fb86ca1156
19 changed files with 943 additions and 0 deletions
@@ -0,0 +1,40 @@
+/*
+ * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
+ *
+ * The MIT License
+ * Copyright © 2014-2022 Ilkka Seppälä
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package com.iluwatar.model.view.intent;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+
+/**
+ * Application test
+ */
+class AppTest {
+
+  @Test
+  void shouldExecuteApplicationWithoutException() {
+    assertDoesNotThrow(() -> App.main(new String[]{}));
+  }
+}
@@ -0,0 +1,83 @@
+package com.iluwatar.model.view.intent;
+
+import com.iluwatar.model.view.intent.actions.*;
+import org.junit.jupiter.api.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class CalculatorViewModelTest {
+
+  private CalculatorModel modelAfterExecutingActions(List<CalculatorAction> actions) {
+    CalculatorViewModel viewModel = new CalculatorViewModel();
+    for (CalculatorAction action : actions) {
+      viewModel.handleAction(action);
+    }
+    return viewModel.getCalculatorModel();
+  }
+
+  @Test
+  void testSetup() {
+    CalculatorModel model = modelAfterExecutingActions(new ArrayList<>());
+    assert model.getVariable() == 0 && model.getOutput() == 0;
+  }
+
+  @Test
+  void testSetVariable() {
+    List<CalculatorAction> actions = List.of(
+        new SetVariableCalculatorAction(10.0)
+    );
+    CalculatorModel model = modelAfterExecutingActions(actions);
+    assert model.getVariable() == 10.0 && model.getOutput() == 0;
+  }
+
+  @Test
+  void testAddition() {
+    List<CalculatorAction> actions = List.of(
+        new SetVariableCalculatorAction(2.0),
+        new AdditionCalculatorAction(),
+        new AdditionCalculatorAction(),
+        new SetVariableCalculatorAction(7.0),
+        new AdditionCalculatorAction()
+    );
+    CalculatorModel model = modelAfterExecutingActions(actions);
+    assert model.getVariable() == 7.0 && model.getOutput() == 11.0;
+  }
+
+  @Test
+  void testSubtraction() {
+    List<CalculatorAction> actions = List.of(
+        new SetVariableCalculatorAction(2.0),
+        new AdditionCalculatorAction(),
+        new AdditionCalculatorAction(),
+        new SubtractionCalculatorAction()
+    );
+    CalculatorModel model = modelAfterExecutingActions(actions);
+    assert model.getVariable() == 2.0 && model.getOutput() == 2.0;
+  }
+
+  @Test
+  void testMultiplication() {
+    List<CalculatorAction> actions = List.of(
+        new SetVariableCalculatorAction(2.0),
+        new AdditionCalculatorAction(),
+        new AdditionCalculatorAction(),
+        new MultiplicationCalculatorAction()
+    );
+    CalculatorModel model = modelAfterExecutingActions(actions);
+    assert model.getVariable() == 2.0 && model.getOutput() == 8.0;
+  }
+
+  @Test
+  void testDivision() {
+    List<CalculatorAction> actions = List.of(
+        new SetVariableCalculatorAction(2.0),
+        new AdditionCalculatorAction(),
+        new AdditionCalculatorAction(),
+        new SetVariableCalculatorAction(2.0),
+        new DivisionCalculatorAction()
+    );
+    CalculatorModel model = modelAfterExecutingActions(actions);
+    assert model.getVariable() == 2.0 && model.getOutput() == 2.0;
+  }
+}