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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| import { | ||
| generateImageData, | ||
| IGatsbyImageHelperArgs, | ||
| IImage, | ||
| } from "../image-utils" | ||
|
|
||
| const args: IGatsbyImageHelperArgs = { | ||
| pluginName: `gatsby-plugin-fake`, | ||
| filename: `afile.jpg`, | ||
| generateImageSource: jest.fn(), | ||
| width: 400, | ||
| sourceMetadata: { | ||
| width: 800, | ||
| height: 600, | ||
| format: `jpg`, | ||
| }, | ||
| reporter: { | ||
| warn: jest.fn(), | ||
| }, | ||
| } | ||
|
|
||
| describe(`the image data helper`, () => { | ||
| beforeEach(() => { | ||
| jest.resetAllMocks() | ||
| }) | ||
| it(`throws if there's not a valid generateURL function`, () => { | ||
| const generateImageSource = `this should be a function` | ||
|
|
||
| expect(() => | ||
| generateImageData(({ | ||
| ...args, | ||
| generateImageSource, | ||
| } as any) as IGatsbyImageHelperArgs) | ||
| ).toThrow() | ||
| }) | ||
|
|
||
| it(`calls the generateImageSource function`, () => { | ||
| generateImageData(args) | ||
| expect(args.generateImageSource).toHaveBeenCalledWith( | ||
| `afile.jpg`, | ||
| 800, | ||
| 600, | ||
| `jpg`, | ||
| undefined, | ||
| undefined | ||
| ) | ||
| }) | ||
|
|
||
| it(`returns URLs as generated`, () => { | ||
| const generateImageSource = ( | ||
| file: string, | ||
| width: number, | ||
| height: number, | ||
| format | ||
| ): IImage => { | ||
| return { | ||
| src: `https://example.com/${file}?width=${width}&height=${height}`, | ||
| width, | ||
| height, | ||
| format, | ||
| } | ||
| } | ||
| const data = generateImageData({ ...args, generateImageSource }) | ||
| expect(data).toMatchInlineSnapshot(` | ||
| Object { | ||
| "height": undefined, | ||
| "images": Object { | ||
| "fallback": Object { | ||
| "sizes": "400px", | ||
| "src": "https://example.com/afile.jpg?width=400&height=300", | ||
| "srcSet": "https://example.com/afile.jpg?width=400&height=300 400w, | ||
| https://example.com/afile.jpg?width=800&height=600 800w", | ||
| }, | ||
| "sources": Array [ | ||
| Object { | ||
| "sizes": "400px", | ||
| "srcSet": "https://example.com/afile.jpg?width=400&height=300 400w, | ||
| https://example.com/afile.jpg?width=800&height=600 800w", | ||
| "type": "image/webp", | ||
| }, | ||
| ], | ||
| }, | ||
| "layout": "fixed", | ||
| "width": 400, | ||
| } | ||
| `) | ||
| }) | ||
| }) |
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4 changes: 2 additions & 2 deletions
4
packages/gatsby-plugin-image/src/components/static-image.server.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,11 +1,11 @@ | ||
| export {}; | ||
| export {} | ||
|
|
||
| declare global { | ||
| declare var SERVER: boolean; | ||
| declare var SERVER: boolean | ||
|
|
||
| namespace NodeJS { | ||
| interface Global { | ||
| GATSBY___IMAGE: boolean; | ||
| GATSBY___IMAGE: boolean | undefined | ||
| } | ||
| } | ||
| } |
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