49 lines
2 KiB
JavaScript
49 lines
2 KiB
JavaScript
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import { expect } from "@esm-bundle/chai";
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import { RustedFloorTextureGenerator } from "../../src/generation/textures/RustedFloorTextureGenerator.js";
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describe("System: Procedural Textures (Rusted Floor)", () => {
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it("CoA 1: Should generate valid OffscreenCanvas maps for all PBR channels", () => {
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const gen = new RustedFloorTextureGenerator(123);
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const maps = gen.generateFloor(64);
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expect(maps.diffuse).to.be.instanceOf(OffscreenCanvas);
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expect(maps.normal).to.be.instanceOf(OffscreenCanvas);
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expect(maps.roughness).to.be.instanceOf(OffscreenCanvas);
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expect(maps.bump).to.be.instanceOf(OffscreenCanvas);
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expect(maps.diffuse.width).to.equal(64);
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});
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it("CoA 2: Should populate pixel data with expected colors", () => {
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const gen = new RustedFloorTextureGenerator(123);
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const maps = gen.generateFloor(64);
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const ctx = maps.diffuse.getContext("2d");
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const data = ctx.getImageData(0, 0, 64, 64).data;
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// Check center pixel - likely metal or rust
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// Moving check off-center to avoid Seams (which are dark/black)
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const sampleIndex = (36 * 64 + 36) * 4;
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expect(data[sampleIndex + 3]).to.equal(255); // Opaque
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expect(data[sampleIndex]).to.be.within(20, 200); // Valid color range
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});
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it("CoA 3: Should generate variant patterns with different seeds", () => {
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const gen = new RustedFloorTextureGenerator(123);
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// Generate two maps with different variant seeds
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const map1 = gen.generateFloor(64, 111);
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const map2 = gen.generateFloor(64, 222);
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// Sample off-center (36, 36) to ensure we hit the metal plate, not the seam.
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// 32 is a multiple of 16 (tile size), so 32,32 is a seam (deterministic).
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// 36 is inside the plate where noise applies.
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const data1 = map1.diffuse.getContext("2d").getImageData(36, 36, 1, 1).data;
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const data2 = map2.diffuse.getContext("2d").getImageData(36, 36, 1, 1).data;
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// Pixels should differ due to rust noise variation
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const isIdentical = data1[0] === data2[0] && data1[1] === data2[1];
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expect(isIdentical).to.be.false;
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});
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});
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