switch from should to expect

package.json

@@ -13,7 +13,7 @@
   },
   "scripts": {
     "lint": "eslint --ext .js,.ts,.tsx '**/*.{js,ts}'",
-    "test": "cross-env BABEL_ENV=test mocha --require @babel/register './packages/**/test/**/*.test.js' --require ts-node/register ./packages/**/test/*.test.ts",
+    "test": "cross-env BABEL_ENV=test mocha --require @babel/register './packages/**/test/**/*.test.js' ./packages/**/test/*.test.ts",
     "test:watch": "npm run test -- --reporter min --watch",
     "test:browser": "cross-env BABEL_ENV=test ENV=browser CHROME_BIN=\"$(which chrome || which chromium)\" karma start --single-run",
     "test:browser:watch": "npm run -s test:browser start -- --auto-watch",
@@ -34,7 +34,9 @@
     "@babel/cli": "^7.20.7",
     "@babel/core": "^7.20.12",
     "@babel/preset-env": "^7.20.2",
+    "@babel/preset-typescript": "^7.18.6",
     "@babel/register": "^7.18.9",
+    "@storybook/expect": "^27.5.2-0",
     "@typescript-eslint/eslint-plugin": "^5.50.0",
     "@typescript-eslint/parser": "^5.50.0",
     "all-contributors-cli": "^6.24.0",
@@ -49,6 +51,7 @@
     "eslint-config-xo": "^0.43.1",
     "eslint-plugin-import": "^2.27.5",
     "express": "^4.17.1",
+    "fast-deep-equal": "^3.1.3",
     "husky": "^3.0.5",
     "karma": "^4.3.0",
     "karma-browserify": "^6.1.0",
@@ -62,8 +65,8 @@
     "nyc": "^14.1.1",
     "patch-package": "^6.5.1",
     "prettier": "^2.8.3",
-    "should": "^13.2.3",
-    "source-map-support": "^0.5.21"
+    "source-map-support": "^0.5.21",
+    "typescript": "^4.9.5"
   },
   "husky": {
     "hooks": {

packages/core/package.json

@@ -39,9 +39,6 @@
     "pixelmatch": "^4.0.2",
     "tinycolor2": "^1.4.1"
   },
-  "devDependencies": {
-    "should": "^13.2.3"
-  },
   "publishConfig": {
     "access": "public"
   }

packages/core/test/utils/mime.test.js

@@ -1,4 +1,4 @@
-import should from "should/as-function";
+import expect from "@storybook/expect";
 import { getType, getExtension, addType } from "../../src/utils/mime";
 
 describe("Mime", () => {
@@ -12,30 +12,30 @@ describe("Mime", () => {
 
   describe("getType", () => {
     it("should return undefined if not found", () => {
-      should(getType("/path/to.the/file.boop")).be.exactly(undefined);
+      expect(getType("/path/to.the/file.boop")).toBe(undefined);
     });
 
     it("should return the correct mime", () => {
-      should(getType("/path/to.the/file.png")).be.exactly("image/png");
-      should(getType("/path/to.the/file.gif")).be.exactly("image/gif");
-      should(getType("/path/to.the/file.jpg")).be.exactly("image/jpeg");
-      should(getType("/path/to.the/file.jpeg")).be.exactly("image/jpeg");
-      should(getType("/path/to.the/file.bmp")).be.exactly("image/bmp");
-      should(getType("/path/to.the/file.tiff")).be.exactly("image/tiff");
+      expect(getType("/path/to.the/file.png")).toBe("image/png");
+      expect(getType("/path/to.the/file.gif")).toBe("image/gif");
+      expect(getType("/path/to.the/file.jpg")).toBe("image/jpeg");
+      expect(getType("/path/to.the/file.jpeg")).toBe("image/jpeg");
+      expect(getType("/path/to.the/file.bmp")).toBe("image/bmp");
+      expect(getType("/path/to.the/file.tiff")).toBe("image/tiff");
     });
   });
 
   describe("getExtension", () => {
     it("should return undefined if not found", () => {
-      should(getExtension("unknown/mime")).be.exactly(undefined);
+      expect(getExtension("unknown/mime")).toBe(undefined);
     });
 
     it("should return the correct extension", () => {
-      should(getExtension("image/png")).be.exactly("png");
-      should(getExtension("image/gif")).be.exactly("gif");
-      should(getExtension("image/jpeg")).be.exactly("jpeg");
-      should(getExtension("image/bmp")).be.exactly("bmp");
-      should(getExtension("image/tiff")).be.exactly("tiff");
+      expect(getExtension("image/png")).toBe("png");
+      expect(getExtension("image/gif")).toBe("gif");
+      expect(getExtension("image/jpeg")).toBe("jpeg");
+      expect(getExtension("image/bmp")).toBe("bmp");
+      expect(getExtension("image/tiff")).toBe("tiff");
     });
   });
 });

packages/custom/types/tsconfig.json

@@ -6,6 +6,7 @@
     "noImplicitThis": true,
     "strictNullChecks": true,
     "strictFunctionTypes": true,
+    "skipLibCheck": true,
     "noEmit": true,
 
     // If the library is an external module (uses `export`), this allows your test file to import "mylib" instead of "./index".

packages/jimp/test/async.test.js

@@ -1,5 +1,5 @@
 import fs from "fs";
-import should from "should";
+import expect from "@storybook/expect";
 import { Jimp, getTestDir } from "@jimp/test-utils";
 
 const imagesDir = getTestDir(__dirname) + "/images";
@@ -16,22 +16,22 @@ describe("Async functions", () => {
     const image = await Jimp.read(imagesDir + "/dice.png");
     const writtenImage = await image.writeAsync(writePath);
 
-    should.exist(writtenImage);
-    fs.existsSync(writePath).should.be.true();
+    expect(writtenImage).not.toBeUndefined();
+    expect(fs.existsSync(writePath)).toBe(true);
     fs.unlinkSync(writePath);
   });
 
   it("getBuffer returns promise", async () => {
     const image = await Jimp.read(imagesDir + "/dice.png");
     const buffer = await image.getBufferAsync(Jimp.AUTO);
 
-    should.exist(buffer);
+    expect(buffer.length).toBeGreaterThan(0);
   });
 
   it("getBase64 returns promise", async () => {
     const image = await Jimp.read(imagesDir + "/dice.png");
     const bas64 = await image.getBase64Async(Jimp.AUTO);
 
-    should.exist(bas64);
+    expect(bas64.length).toBeGreaterThan(0);
   });
 });

packages/jimp/test/callbacks.test.js

@@ -1,7 +1,9 @@
 import { Jimp, mkJGD, hasOwnProp } from "@jimp/test-utils";
+import expect from "@storybook/expect";
 
 import configure from "@jimp/custom";
 import plugins from "@jimp/plugins";
+import { expectToBeJGD } from "@jimp/test-utils/src";
 
 const jimp = configure({ plugins: [plugins] }, Jimp);
 
@@ -213,7 +215,7 @@ describe("Callbacks", () => {
 
       function save(err, image) {
         if (err) return done(err);
-        image.getJGDSync().should.be.sameJGD(result);
+        expectToBeJGD(image.getJGDSync(), result);
         done();
       }
 

packages/jimp/test/colordiff.test.js

@@ -1,57 +1,60 @@
 import { Jimp } from "@jimp/test-utils";
+import expect from "@storybook/expect";
 
 // Convert [0..1] float to a percent value with only one decimal.
 const pct = (n) => ((n * 1000) << 0) / 10;
 
 describe("compute color difference", () => {
   it("totally opaque (no alpha defined)", () => {
-    Jimp.colorDiff(
-      { r: 255, g: 0, b: 0 },
-      { r: 255, g: 0, b: 0 }
-    ).should.be.equal(0, "both red");
-
-    pct(
-      Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 0, g: 0, b: 0 })
-    ).should.be.equal(33.3, "red x black");
-
-    pct(
-      Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 0, g: 255, b: 0 })
-    ).should.be.equal(66.6, "red x green");
-
-    Jimp.colorDiff(
-      { r: 255, g: 0, b: 0 },
-      { r: 0, g: 255, b: 255 }
-    ).should.be.equal(1, "red x cyan");
-
-    Jimp.colorDiff(
-      { r: 0, g: 0, b: 0 },
-      { r: 255, g: 255, b: 255 }
-    ).should.be.equal(1, "black x white");
+    expect(
+      Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 255, g: 0, b: 0 })
+    ).toEqual(0);
+
+    expect(
+      pct(Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 0, g: 0, b: 0 }))
+    ).toEqual(33.3);
+
+    expect(
+      pct(Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 0, g: 255, b: 0 }))
+    ).toEqual(66.6);
+
+    expect(
+      Jimp.colorDiff({ r: 255, g: 0, b: 0 }, { r: 0, g: 255, b: 255 })
+    ).toEqual(1);
+
+    expect(
+      Jimp.colorDiff({ r: 0, g: 0, b: 0 }, { r: 255, g: 255, b: 255 })
+    ).toEqual(1);
   });
 
   it("totally transparent", () => {
-    Jimp.colorDiff(
-      { r: 255, g: 0, b: 0, a: 0 },
-      { r: 255, g: 0, b: 0, a: 0 }
-    ).should.be.equal(0, "both transparent red");
-
-    Jimp.colorDiff(
-      { r: 0, g: 0, b: 0, a: 0 },
-      { r: 255, g: 255, b: 255, a: 0 }
-    ).should.be.equal(1, "transparent black x transparent white");
+    expect(
+      Jimp.colorDiff({ r: 255, g: 0, b: 0, a: 0 }, { r: 255, g: 0, b: 0, a: 0 })
+    ).toEqual(0);
+
+    expect(
+      Jimp.colorDiff(
+        { r: 0, g: 0, b: 0, a: 0 },
+        { r: 255, g: 255, b: 255, a: 0 }
+      )
+    ).toEqual(1);
   });
 
   it("different alpha", () => {
-    pct(
-      Jimp.colorDiff(
-        { r: 255, g: 0, b: 0, a: 100 },
-        { r: 255, g: 0, b: 0, a: 150 }
+    expect(
+      pct(
+        Jimp.colorDiff(
+          { r: 255, g: 0, b: 0, a: 100 },
+          { r: 255, g: 0, b: 0, a: 150 }
+        )
       )
-    ).should.be.equal(3.8, "both red");
+    ).toEqual(3.8);
 
-    Jimp.colorDiff(
-      { r: 0, g: 0, b: 0, a: 0 },
-      { r: 255, g: 255, b: 255, a: 255 }
-    ).should.be.equal(1, "transparent black x transparent white");
+    expect(
+      Jimp.colorDiff(
+        { r: 0, g: 0, b: 0, a: 0 },
+        { r: 255, g: 255, b: 255, a: 255 }
+      )
+    ).toEqual(1);
   });
 });

packages/jimp/test/composite.test.js

@@ -1,5 +1,5 @@
 import fs from "fs";
-import should from "should";
+import expect from "@storybook/expect";
 
 import { Jimp, getTestDir } from "@jimp/test-utils";
 
@@ -35,7 +35,7 @@ describe("composite", () => {
 
     fs.unlinkSync(testPath);
 
-    should.deepEqual(one, two);
+    expect(one).toEqual(two);
   });
 
   it("should handle edges correctly", async () => {
@@ -64,6 +64,6 @@ describe("composite", () => {
 
     fs.unlinkSync(testPath);
 
-    should.deepEqual(one, two);
+    expect(one).toEqual(two);
   });
 });

packages/jimp/test/diff.test.js

@@ -1,4 +1,5 @@
 import { Jimp, mkJGD } from "@jimp/test-utils";
+import expect from "@storybook/expect";
 
 describe("Compare image difference", () => {
   let imgs = [
@@ -19,8 +20,9 @@ describe("Compare image difference", () => {
 
   it("images 0 and 1", () => {
     const diff = Jimp.diff(imgs[0], imgs[1]);
-    diff.percent.should.be.equal(0.75);
-    diff.image.getJGDSync().should.be.sameJGD({
+
+    expect(diff.percent).toBe(0.75);
+    expect(diff.image.getJGDSync()).toEqual({
       width: 4,
       height: 4,
       data: [
@@ -33,8 +35,9 @@ describe("Compare image difference", () => {
 
   it("images 0 and 2", () => {
     const diff = Jimp.diff(imgs[0], imgs[2]);
-    diff.percent.should.be.equal(0);
-    diff.image.getJGDSync().should.be.sameJGD({
+
+    expect(diff.percent).toBe(0);
+    expect(diff.image.getJGDSync()).toEqual({
       width: 4,
       height: 4,
       data: [
@@ -47,8 +50,8 @@ describe("Compare image difference", () => {
 
   it("images 0 and 3", () => {
     const diff = Jimp.diff(imgs[0], imgs[3]);
-    diff.percent.should.be.equal(0);
-    diff.image.getJGDSync().should.be.sameJGD({
+    expect(diff.percent).toBe(0);
+    expect(diff.image.getJGDSync()).toEqual({
       width: 4,
       height: 4,
       data: [
@@ -60,12 +63,12 @@ describe("Compare image difference", () => {
   });
 
   it("allows to set a different threshold", () => {
-    Jimp.diff(imgs[0], imgs[3], 0.1).percent.should.be.equal(0);
-    Jimp.diff(imgs[0], imgs[3], 0).percent.should.be.equal(0.25);
+    expect(Jimp.diff(imgs[0], imgs[3], 0.1).percent).toBe(0);
+    expect(Jimp.diff(imgs[0], imgs[3], 0).percent).toBe(0.25);
   });
 
   it("throws an error if threshold is invalid", () => {
-    (() => Jimp.diff(imgs[0], imgs[3], "invalid")).should.throw(
+    expect(() => Jimp.diff(imgs[0], imgs[3], -1)).toThrow(
       "threshold must be a number between 0 and 1"
     );
   });