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calculateImageSizeForContainer.test.ts
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calculateImageSizeForContainer.test.ts
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import { KoaResponsiveImageRouter } from "..";
import assert from "assert";
import { imageRouterConfig, paths } from "../../test/config";
describe.only("calculateImageSizeForContainer", () => {
// const imageRouter = new KoaResponsiveImageRouter(
// "/static/images",
// "/tmp/images"
// );
const imageRouter = new KoaResponsiveImageRouter({
staticPath: paths.staticImages,
thumbnailSize: imageRouterConfig.thumbnailsSize,
cacheManagerResolutionThreshold:
imageRouterConfig.cacheManagerResolutionThreshold,
});
it('should return the correct size for "cover" object fit (landscape container)', () => {
const imageWidth = 800;
const imageHeight = 600;
const containerWidth = 300;
const containerHeight = 150;
const objectFit = "cover";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 300,
height: 225,
});
});
it('should return the correct size for "cover" object fit (portrait container)', () => {
const imageWidth = 600;
const imageHeight = 800;
const containerWidth = 150;
const containerHeight = 300;
const objectFit = "cover";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 225,
height: 300,
});
});
it('should return the correct size for "contain" object fit (landscape container)', () => {
const imageWidth = 800;
const imageHeight = 600;
const containerWidth = 300;
const containerHeight = 150;
const objectFit = "contain";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 200,
height: 150,
});
});
it('should return the correct size for "contain" object fit (portrait container)', () => {
const imageWidth = 600;
const imageHeight = 800;
const containerWidth = 150;
const containerHeight = 300;
const objectFit = "contain";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 150,
height: 200,
});
});
it('should return the correct size for "cover" object fit (square container)', () => {
const imageWidth = 600;
const imageHeight = 600;
const containerWidth = 400;
const containerHeight = 400;
const objectFit = "cover";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 400,
height: 400,
});
});
it('should return the correct size for "contain" object fit (square container)', () => {
const imageWidth = 600;
const imageHeight = 600;
const containerWidth = 400;
const containerHeight = 400;
const objectFit = "contain";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 400,
height: 400,
});
});
it("should return 0 width and 0 height for negative container dimensions", () => {
const imageWidth = 800;
const imageHeight = 600;
const containerWidth = -100;
const containerHeight = -200;
const objectFit = "cover";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 0,
height: 0,
});
});
it("should return 0 width and 0 height for negative container dimensions", () => {
const imageWidth = 600;
const imageHeight = 800;
const containerWidth = -200;
const containerHeight = -100;
const objectFit = "contain";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 0,
height: 0,
});
});
it("should return 0 width and 0 height when container dimensions are zero", () => {
const imageWidth = 800;
const imageHeight = 600;
const containerWidth = 0;
const containerHeight = 0;
const objectFit = "cover";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 0,
height: 0,
});
});
it("should return 0 width and 0 height when container dimensions are zero", () => {
const imageWidth = 600;
const imageHeight = 800;
const containerWidth = 0;
const containerHeight = 0;
const objectFit = "contain";
const result = imageRouter.calculateImageSizeForContainer(
imageWidth,
imageHeight,
containerWidth,
containerHeight,
objectFit
);
assert.deepStrictEqual(result, {
width: 0,
height: 0,
});
});
});

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calculateImageSizeForContainer.test.ts (5 KB)

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