Merge branch 'matchfield' into fleetstorm2

src/main/java/de/tims/fleetstorm/matchfield/Matchfield.java

@@ -0,0 +1,39 @@
+package de.tims.fleetstorm.matchfield;
+
+public class Matchfield {
+
+	private int[][] matchfield;
+	private int size;
+
+	public static final int EMPTY = 0;
+	public static final int SHIP = 1;
+	public static final int SHOT = 2;
+
+	public Matchfield(int size) {
+		this.size = size;
+		this.matchfield = new int[this.size][this.size];
+	}
+
+	public int[][] createMatchfield() {
+		for (int i = 0; i < size; i++) {
+			for (int j = 0; j < size; j++) {
+				this.matchfield[i][j] = Matchfield.EMPTY;
+			}
+		}
+
+		return this.matchfield;
+	}
+
+	public int getSize() {
+		return this.matchfield.length * this.matchfield[0].length;
+	}
+
+	public int getState(int x, int y) {
+		return this.matchfield[x][y];
+	}
+
+	public void setState(int x, int y, int state) {
+		this.matchfield[x][y] = state;
+	}
+
+}

src/test/java/de/tims/fleetstorm/matchfield/MatchfieldCreationTest.java

@@ -0,0 +1,66 @@
+package de.tims.fleetstorm.matchfield;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertNotNull;
+
+import java.util.stream.Stream;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+class MatchfieldCreationTest {
+
+	@Test
+	void testMatchfieldCreateNotEmpty() {
+		Matchfield matchfield = new Matchfield(0);
+		int[][] calcResult = matchfield.createMatchfield();
+		assertNotNull(calcResult);
+	}
+
+	@ParameterizedTest(name = "matchfield creation has correct size")
+	@MethodSource("testMatchfieldSize")
+	void testMatchfieldCreationHasCorrectSize(String testName, int size, int expectedResult) {
+		Matchfield matchfield = new Matchfield(size);
+		matchfield.createMatchfield();
+
+		int calcResult = matchfield.getSize();
+		assertThat(calcResult).describedAs(testName).isEqualTo(expectedResult);
+	}
+
+	static Stream<Arguments> testMatchfieldSize() {
+		return Stream.of(Arguments.of("field size 10x10", 10, 100), Arguments.of("field size 15x15", 15, 225));
+	}
+
+	@ParameterizedTest(name = "matchfield get field is correct")
+	@MethodSource("testMatchfieldGetFieldState")
+	void testMatchfieldGetCorrectState(String testName, int x, int y, int expectedResult) {
+		Matchfield matchfield = new Matchfield(10);
+		matchfield.createMatchfield();
+
+		int calcResult = matchfield.getState(x, y);
+		assertThat(calcResult).describedAs(testName).isEqualTo(expectedResult);
+	}
+
+	static Stream<Arguments> testMatchfieldGetFieldState() {
+		return Stream.of(Arguments.of("field x:0 y:0 has empty state", 0, 0, Matchfield.EMPTY));
+	}
+
+	@ParameterizedTest(name = "matchfield change field is correct")
+	@MethodSource("testMatchfieldSetStateIsCorrect")
+	void testMatchfieldGetCorrectState(String testName, int x, int y, int state, int expectedResult) {
+		Matchfield matchfield = new Matchfield(10);
+		matchfield.createMatchfield();
+
+		matchfield.setState(x, y, state);
+
+		int calcResult = matchfield.getState(x, y);
+		assertThat(calcResult).describedAs(testName).isEqualTo(expectedResult);
+	}
+
+	static Stream<Arguments> testMatchfieldSetStateIsCorrect() {
+		return Stream.of(
+				Arguments.of("field x:0 y:0 has state SHIP after setState()", 0, 0, Matchfield.SHIP, Matchfield.SHIP));
+	}
+}