Release Scan Tools 0.2.0

tests/scan/render.test.ts

@@ -0,0 +1,28 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { perspectiveCorrectPixels } from "../../src/scan/render";
+import { defaultAdjustments } from "../../src/scan/types";
+
+class TestImageData {
+  data: Uint8ClampedArray;
+  width: number;
+  height: number;
+  constructor(width: number, height: number) {
+    this.width = width;
+    this.height = height;
+    this.data = new Uint8ClampedArray(width * height * 4);
+  }
+}
+
+describe("scan render core", () => {
+  afterEach(() => vi.unstubAllGlobals());
+
+  it("maps an identity quad without changing corner colours", () => {
+    vi.stubGlobal("ImageData", TestImageData);
+    const source = new TestImageData(2, 2) as unknown as ImageData;
+    source.data.set([
+      255, 0, 0, 255, 0, 255, 0, 255, 0, 0, 255, 255, 255, 255, 255, 255,
+    ]);
+    const result = perspectiveCorrectPixels(source, 2, 2, defaultAdjustments());
+    expect([...result.data]).toEqual([...source.data]);
+  });
+});