tests: game and tic tac toe

src/samples/tic-tac-toe.ts

@@ -13,30 +13,18 @@ type TurnResult = {
     winner: 'X' | 'O' | 'draw' | null;
 };
 
-function getBoardRegion(host: IGameContext) {
+export function getBoardRegion(host: IGameContext) {
     return host.regions.get('board');
 }
 
-function isCellOccupied(host: IGameContext, row: number, col: number): boolean {
+export function isCellOccupied(host: IGameContext, row: number, col: number): boolean {
     const board = getBoardRegion(host);
     return board.value.children.some(
         (child: { value: { position: number[] } }) => child.value.position[0] === row && child.value.position[1] === col
     );
 }
 
-function checkWinner(host: IGameContext): 'X' | 'O' | 'draw' | null {
-    const parts = Object.values(host.parts.collection.value).map((s: { value: Part }) => s.value);
-
-    const xPositions = parts.filter((_: Part, i: number) => i % 2 === 0).map((p: Part) => p.position);
-    const oPositions = parts.filter((_: Part, i: number) => i % 2 === 1).map((p: Part) => p.position);
-
-    if (hasWinningLine(xPositions)) return 'X';
-    if (hasWinningLine(oPositions)) return 'O';
-
-    return null;
-}
-
-function hasWinningLine(positions: number[][]): boolean {
+export function hasWinningLine(positions: number[][]): boolean {
     const lines = [
         [[0, 0], [0, 1], [0, 2]],
         [[1, 0], [1, 1], [1, 2]],
@@ -55,7 +43,19 @@ function hasWinningLine(positions: number[][]): boolean {
     );
 }
 
-function placePiece(host: IGameContext, row: number, col: number, moveCount: number) {
+export function checkWinner(host: IGameContext): 'X' | 'O' | 'draw' | null {
+    const parts = Object.values(host.parts.collection.value).map((s: { value: Part }) => s.value);
+
+    const xPositions = parts.filter((_: Part, i: number) => i % 2 === 0).map((p: Part) => p.position);
+    const oPositions = parts.filter((_: Part, i: number) => i % 2 === 1).map((p: Part) => p.position);
+
+    if (hasWinningLine(xPositions)) return 'X';
+    if (hasWinningLine(oPositions)) return 'O';
+
+    return null;
+}
+
+export function placePiece(host: IGameContext, row: number, col: number, moveCount: number) {
     const board = getBoardRegion(host);
     const piece: Part = {
         id: `piece-${moveCount}`,