128 lines
4.4 KiB
JavaScript
128 lines
4.4 KiB
JavaScript
/* eslint-disable no-new */
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/*
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MIT License
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Copyright (c) 2023 Michael Smith <root@retrospace.be>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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import { expect, test } from "vitest";
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import parsePBM from "../src/pbm.js";
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const fs = require("fs");
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test("Successfully parse a PBM file", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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expect(() => {
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parsePBM(data.buffer);
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}).not.toThrowError();
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});
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test("Fail to parse a PBM file with an invalid chunk id", () => {
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const data = fs.readFileSync("./tests/fixtures/INVALID_CHUNK_ID.LBM");
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expect(() => {
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parsePBM(data.buffer);
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}).toThrowError(/^Invalid chunkId: "FARM" at byte 12. Expected "FORM".$/);
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});
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test("Fail to parse a PBM file with an invalid chunk length", () => {
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const data = fs.readFileSync("./tests/fixtures/INVALID_CHUNK_LENGTH.LBM");
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expect(() => {
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parsePBM(data.buffer);
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}).toThrowError(/^Invalid chunk length: 7070 bytes. Expected 7012 bytes.$/);
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});
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test("Fail to parse an IFF file that is not a PBM file", () => {
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const data = fs.readFileSync("./tests/fixtures/SEASCAPE.LBM");
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expect(() => {
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parsePBM(data.buffer);
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}).toThrowError(/^Invalid formatId: "ILBM". Expected "PBM ".$/);
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});
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test("Parse a PBM bitmap header", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.width).toStrictEqual(640);
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expect(image.height).toStrictEqual(480);
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expect(image.size).toStrictEqual(307_200);
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expect(image.xOrigin).toStrictEqual(0);
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expect(image.yOrigin).toStrictEqual(0);
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expect(image.numPlanes).toStrictEqual(8);
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expect(image.mask).toStrictEqual(0);
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expect(image.compression).toStrictEqual(1);
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expect(image.transClr).toStrictEqual(255);
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expect(image.xAspect).toStrictEqual(1);
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expect(image.yAspect).toStrictEqual(1);
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expect(image.pageWidth).toStrictEqual(640);
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expect(image.pageHeight).toStrictEqual(480);
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});
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test("Parse PBM palette information", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.palette.length).toStrictEqual(256);
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expect(image.palette[10]).toStrictEqual([87, 255, 87]);
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});
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test("Parse PBM color cycling information", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.cyclingRanges.length).toStrictEqual(16);
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});
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test("Parse PBM thumbnail", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.thumbnail.width).toStrictEqual(80);
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expect(image.thumbnail.height).toStrictEqual(60);
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expect(image.thumbnail.size).toStrictEqual(4800);
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});
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test("Decode PBM thumbnail pixel data", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.thumbnail.pixelData.length).toStrictEqual(4800);
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// FIXME(m): Verify these values are correct in the test image thumbnail:
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expect(image.thumbnail.pixelData[0]).toStrictEqual(14);
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expect(image.palette[14]).toStrictEqual([255, 255, 87]);
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});
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test("Decode PBM image pixel data", () => {
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const data = fs.readFileSync("./tests/fixtures/VALID.LBM");
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const image = parsePBM(data.buffer);
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expect(image.pixelData.length).toStrictEqual(307_200);
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// FIXME(m): Verify these values are correct in the test image:
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expect(image.pixelData[0]).toStrictEqual(14);
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expect(image.palette[14]).toStrictEqual([255, 255, 87]);
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});
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