From 9029de6c126ac7f07138666d583bdd9b227d5cd8 Mon Sep 17 00:00:00 2001
From: Tobias Krause <tobias.krause@informatik.hs-fulda.de>
Date: Mon, 31 Jan 2022 14:08:11 +0100
Subject: [PATCH] tictactoe: countCharsInRow counts number of given char in
 specific row

---
 src/main/java/de/tims/tictactoe/ai/AIHard.java     | 8 +++++++-
 src/test/java/de/tims/tictactoe/ai/AIHardTest.java | 7 +++++--
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/main/java/de/tims/tictactoe/ai/AIHard.java b/src/main/java/de/tims/tictactoe/ai/AIHard.java
index 6891e94..48e7d1b 100644
--- a/src/main/java/de/tims/tictactoe/ai/AIHard.java
+++ b/src/main/java/de/tims/tictactoe/ai/AIHard.java
@@ -57,6 +57,12 @@ public class AIHard implements TicTacToeAI {
 	}
 	
 	public int countCharsInRow(int index, char charToCount) {
-		return 0;
+		int count = 0;
+		char[][] board = gl.getBoard();
+		for (int i = 0; i < BOARD_SIZE; i++) {
+			count += (board[index][i] == charToCount) ? 1 : 0;
+		}
+		
+		return count;
 	}
 }
diff --git a/src/test/java/de/tims/tictactoe/ai/AIHardTest.java b/src/test/java/de/tims/tictactoe/ai/AIHardTest.java
index 049e093..a35614b 100644
--- a/src/test/java/de/tims/tictactoe/ai/AIHardTest.java
+++ b/src/test/java/de/tims/tictactoe/ai/AIHardTest.java
@@ -79,8 +79,11 @@ class AIHardTest {
 	
 	private static Stream<Arguments> testCasesForCountCharsInRow() {
 		return Stream.of(Arguments.of("EmptyFieldReturns0", 
-				new char[][] { {'-', '-', '-'}, {'-', '-', '-'}, {'-', '-', '-'} },
-				0, 'o', 0));
+						new char[][] { {'-', '-', '-'}, {'-', '-', '-'}, {'-', '-', '-'} },
+						0, 'o', 0),
+				Arguments.of("TwoCharsInRowReturnsTwo", 
+						new char[][] { {'-', '-', '-'}, {'o', 'o', '-'}, {'-', '-', '-'} },
+						1, 'o', 2));
 	}
 
 }