commit 9a8a7c79e8c674d8c65b107ed75d6b2a9fb3bbe5
Author: Thomas Papendieck <fdai0127@pc03.informatik.hs-fulda.de>
Date:   Tue Dec 7 10:22:23 2021 +0100

    Tests für GameCell und CellState.Dead

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
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+target/
+main/
+.*
diff --git a/README.md b/README.md
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+++ b/README.md
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+# Übung Test Driven Development 
+
+Dieser Code implementiert *"Conways Game of Life"* und dient als Beispiel für die Arbeitsmethode TDD.
+Daher ist hier nur der Test-Code eingecheckt.
+
diff --git a/pom.xml b/pom.xml
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+++ b/pom.xml
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+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>de.edu.hsfulda.ciip.gameoflife</groupId>
+	<artifactId>GameOfLife</artifactId>
+	<version>0.1.0-SNAPSHOT</version>
+	<properties>
+		<maven.compiler.target>11</maven.compiler.target>
+		<maven.compiler.source>11</maven.compiler.source>
+		<junit.jupiter.version>5.8.1</junit.jupiter.version>
+		<junit.platform.version>1.8.1</junit.platform.version>
+		<mockito.version>4.1.0</mockito.version>
+		<assertj.version>3.21.0</assertj.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-engine</artifactId>
+			<version>${junit.jupiter.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-params</artifactId>
+			<version>${junit.jupiter.version}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<!-- new assertThat() -->
+		<dependency>
+			<groupId>org.assertj</groupId>
+			<artifactId>assertj-core</artifactId>
+			<version>${assertj.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.mockito</groupId>
+			<artifactId>mockito-core</artifactId>
+			<version>${mockito.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.mockito</groupId>
+			<artifactId>mockito-junit-jupiter</artifactId>
+			<version>${mockito.version}</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-surefire-plugin</artifactId>
+					<!-- JUnit 5 requires Surefire version 2.22.0 or higher -->
+					<version>2.22.2</version>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+</project>
diff --git a/src/test/java/de/edu/hsfulda/ciil/cgol/GameCellTest.java b/src/test/java/de/edu/hsfulda/ciil/cgol/GameCellTest.java
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index 0000000..facce65
--- /dev/null
+++ b/src/test/java/de/edu/hsfulda/ciil/cgol/GameCellTest.java
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+package de.edu.hsfulda.ciil.cgol;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.anyCollection;
+import static org.mockito.Mockito.lenient;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+@ExtendWith(MockitoExtension.class)
+class GameCellTest {
+
+	@Mock(name = "initial state")
+	private CellState initialState;
+	@Mock(name = "neigbor state")
+	private CellState neighborState;
+	@Mock(name = "new state")
+	private CellState calculatedState;
+
+	@Mock(name = "neighbor")
+	private GameCell neighborCell;
+
+	private GameCell gameCell;
+	private final Collection<CellState> neighborStates = Arrays
+			.asList(neighborState, neighborState, neighborState, neighborState);
+
+	@BeforeEach
+	void setUp() throws Exception {
+		lenient().when(neighborCell.getState())
+		   .thenReturn(neighborState);
+		gameCell = new GameCell(initialState);
+		for (int i =0;i<neighborStates.size();i++) {
+			gameCell.addNeigbor(neighborCell);
+		}
+	}
+
+	@Test
+	void returnsInitialState() {
+
+		CellState currentState = gameCell.getState();
+
+		assertThat(currentState).describedAs("initial state").isEqualTo(initialState);
+	}
+
+	@Test
+	void passesStatesOfNeighborsWhenCalculatingFuture() {
+		
+
+		gameCell.calculateFuture();
+
+		verify(initialState).calculateFuture(neighborStates);
+		
+		CellState currentState = gameCell.getState();
+		assertThat(currentState)
+		  .describedAs("state after calculation").isEqualTo(initialState);
+	}
+
+	@Test
+	void changesStateWhenRequested() {
+		when(initialState.calculateFuture(anyCollection()))
+			 .thenReturn(calculatedState);
+
+		gameCell.calculateFuture();
+		gameCell.updateState();
+		
+		CellState currentState = gameCell.getState();
+		assertThat(currentState)
+		  .describedAs("state after changeRequest")
+		  .isEqualTo(calculatedState);
+
+		
+	}
+	
+	
+
+}
diff --git a/src/test/java/de/edu/hsfulda/ciil/cgol/rulset/r23_3/CellStateDeadTest.java b/src/test/java/de/edu/hsfulda/ciil/cgol/rulset/r23_3/CellStateDeadTest.java
new file mode 100644
index 0000000..6185fb1
--- /dev/null
+++ b/src/test/java/de/edu/hsfulda/ciil/cgol/rulset/r23_3/CellStateDeadTest.java
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+package de.edu.hsfulda.ciil.cgol.rulset.r23_3;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Random;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import de.edu.hsfulda.ciil.cgol.CellState;
+
+class CellStateDeadTest {
+
+	private static final int NEIGHBOR_COUNT = 5+new Random().nextInt(10);
+
+	private static final CellState CELL_STATE_DEAD = new CellStateDead();
+
+	private static final CellState CELL_STATE_ALIVE = CellStateAlive.IS_ALIVE;
+
+	@BeforeEach
+	void setUp() throws Exception {
+	}
+
+	@ParameterizedTest(name = "[{index}] {0} -> {2}")
+	@MethodSource("testCasesForStateDead")
+	void test(String testName, List<CellState> neigborStates, CellState expectedResult) {
+		Collections.shuffle(neigborStates);
+		CellState calculatedState = CELL_STATE_DEAD.calculateFuture(neigborStates);
+		assertThat(calculatedState).describedAs(testName).isEqualTo(expectedResult);
+	}
+
+	private static Stream<Arguments> testCasesForStateDead() {
+		return Stream.of(
+				Arguments.of(
+						"with zero alive neighbors",
+						IntStream.range(0, NEIGHBOR_COUNT)
+							.mapToObj(i -> CELL_STATE_DEAD)
+							.collect(Collectors.toList()),
+						CELL_STATE_DEAD),
+				Arguments.of(
+						"with 2 alive neighbors",
+						IntStream.range(0, NEIGHBOR_COUNT)
+							.mapToObj(i -> i < 2 ? CELL_STATE_ALIVE : CELL_STATE_DEAD)
+							.collect(Collectors.toList()),
+						CELL_STATE_DEAD),
+				Arguments.of(
+						"with 4 alive neighbors",
+						IntStream.range(0, NEIGHBOR_COUNT)
+							.mapToObj(i -> i < 4 ? CELL_STATE_ALIVE : CELL_STATE_DEAD)
+							.collect(Collectors.toList()),
+						CELL_STATE_DEAD),
+				Arguments.of(
+						"with 3 alive neighbors",
+						IntStream.range(0, NEIGHBOR_COUNT)
+							.mapToObj(i -> i < 3 ? CELL_STATE_ALIVE : CELL_STATE_DEAD)
+							.collect(Collectors.toList()),
+						CELL_STATE_ALIVE));
+	}
+
+}