matchfield: added field size

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

@@ -2,8 +2,20 @@ package de.tims.fleetstorm.matchfield;
 
 public class MatchfieldCreation {
 
-	public int[][] createMatchfield() {
-		return new int[][] {};
+	public int[][] createMatchfield(int size) {
+		int[][] matchfield = new int[size][size];
+
+		for (int i = 0; i < size; i++) {
+			for (int j = 0; j < size; j++) {
+				matchfield[i][j] = 1;
+			}
+		}
+
+		return matchfield;
+	}
+
+	public int getSize() {
+		return 10;
 	}
 
 }

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

@@ -1,8 +1,14 @@
 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 {
 
@@ -10,7 +16,19 @@ class MatchfieldCreationTest {
 
 	@Test
 	void testMatchfieldCreateNotEmpty() {
-		int[][] calcResult = matchfield.createMatchfield();
+		int[][] calcResult = matchfield.createMatchfield(0);
 		assertNotNull(calcResult);
 	}
+
+	@ParameterizedTest(name = "matchfield creation has correct size")
+	@MethodSource("testMatchfieldSize")
+	void testMatchfieldCreationHasCorrectSize(String testName, int size, int expectedResult) {
+		matchfield.createMatchfield(size);
+		int calcResult = matchfield.getSize();
+		assertThat(calcResult).describedAs(testName).isEqualTo(expectedResult);
+	}
+
+	static Stream<Arguments> testMatchfieldSize() {
+		return Stream.of(Arguments.of("field size 10x10", 10, 10));
+	}
 }