chore: add tests for Cell

2 files changed, 106 insertions, 0 deletions

diff --git a/src/Cell/Cell.test.ts b/src/Cell/Cell.test.ts
new file mode 100644
index 0000000..56f227f
--- /dev/null
+++ b/src/Cell/Cell.test.ts
@@ -0,0 +1,51 @@
+import assert from 'assert';
+import Cell, { Direction, Item } from './Cell';
+
+const { North, East, South, West } = Direction;
+const { Road, Town, Empty, River, Church } = Item;
+
+describe('Cell', () => {
+  describe('getSide', () => {
+    it('Should get North, East, South and West sides correctly', () => {
+      const cell = new Cell(Empty, [Road, Town, Empty, River]);
+
+      assert.strictEqual(cell.getSide(North), Road);
+      assert.strictEqual(cell.getSide(East), Town);
+      assert.strictEqual(cell.getSide(South), Empty);
+      assert.strictEqual(cell.getSide(West), River);
+    });
+
+    it('Should respect cell orientation', () => {
+      const cell = new Cell(Empty, [Road, Town, Empty, River]);
+      cell.rotate(5);
+
+      assert.strictEqual(cell.getSide(North), River);
+      assert.strictEqual(cell.getSide(East), Road);
+      assert.strictEqual(cell.getSide(South), Town);
+      assert.strictEqual(cell.getSide(West), Empty);
+    });
+
+    it('Should work with negative orientation', () => {
+      const cell = new Cell(Empty, [Road, Town, Empty, River]);
+      cell.rotate(-7);
+
+      assert.strictEqual(cell.getSide(North), River);
+      assert.strictEqual(cell.getSide(East), Road);
+      assert.strictEqual(cell.getSide(South), Town);
+      assert.strictEqual(cell.getSide(West), Empty);
+    });
+  });
+
+  describe('isAttachable', () => {
+    it('Should correctly test if cell is attachable', () => {
+      const cell = new Cell(Church, [Road, Town, Empty, River]);
+      const other = new Cell(Empty, [Road, Road, Town, Road], 3);
+
+      assert.strictEqual(cell.isAttachable(other, North), true);
+      assert.strictEqual(cell.isAttachable(other, East), true);
+      assert.strictEqual(cell.isAttachable(other, South), false);
+      assert.strictEqual(cell.isAttachable(other, West), false);
+    });
+  });
+});
+
diff --git a/src/Cell/Cell.ts b/src/Cell/Cell.ts
new file mode 100644
index 0000000..23fdc9e
--- /dev/null
+++ b/src/Cell/Cell.ts
@@ -0,0 +1,55 @@
+import Debug, { Debugger } from 'debug';
+
+export enum Direction {
+  North,
+  East,
+  South,
+  West
+}
+
+export enum Item {
+  Empty = " ",
+  Road = "R",
+  Town = "T",
+  River = "I",
+  Church = "C",
+}
+
+export default class Cell {
+  center: Item;
+  private sides: [Item, Item, Item, Item];
+  private orientation: number // amount of 90-degree counter-clockwise rotations from original orientation
+  shield?: boolean;
+
+  debug: Debugger;
+
+  public constructor(center: Item, sides: [Item, Item, Item, Item], orientation = 0, shield = false) {
+    this.center = center;
+    this.sides = sides;
+    this.shield = shield;
+    this.orientation = orientation;
+
+    this.debug = Debug('cell');
+  }
+
+  toString() {
+    return;
+  }
+
+  print() {
+    console.log( ` ${this.getSide(Direction.North)} \n${this.getSide(Direction.West)}${this.center}${this.getSide(Direction.East)}\n ${this.getSide(Direction.South)} `);
+  }
+
+  getSide(direction: Direction) {
+    return this.sides[(((this.orientation + direction) % 4) + 4) % 4];
+  }
+
+  rotate(rotation = 1) {
+    this.debug(`Rotating ${rotation} clockwise`)
+    this.orientation = this.orientation - rotation;
+  }
+
+  isAttachable(cell: Cell, side: Direction) {
+    return (this.getSide(side) === cell.getSide(side + 2));
+  }
+}