From dd136858f1ea40ad3c94191d647487fa4f31926c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 18 Oct 2024 20:33:49 +0200 Subject: Adding upstream version 9.0.0. Signed-off-by: Daniel Baumann --- web_src/js/utils/image.test.js | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 web_src/js/utils/image.test.js (limited to 'web_src/js/utils/image.test.js') diff --git a/web_src/js/utils/image.test.js b/web_src/js/utils/image.test.js new file mode 100644 index 0000000..ba47582 --- /dev/null +++ b/web_src/js/utils/image.test.js @@ -0,0 +1,29 @@ +import {pngChunks, imageInfo} from './image.js'; + +const pngNoPhys = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAADUlEQVQIHQECAP3/AAAAAgABzePRKwAAAABJRU5ErkJggg=='; +const pngPhys = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAEElEQVQI12OQNZcAIgYIBQAL8gGxdzzM0A=='; +const pngEmpty = 'data:image/png;base64,'; + +async function dataUriToBlob(datauri) { + return await (await globalThis.fetch(datauri)).blob(); +} + +test('pngChunks', async () => { + expect(await pngChunks(await dataUriToBlob(pngNoPhys))).toEqual([ + {name: 'IHDR', data: new Uint8Array([0, 0, 0, 1, 0, 0, 0, 1, 8, 0, 0, 0, 0])}, + {name: 'IDAT', data: new Uint8Array([8, 29, 1, 2, 0, 253, 255, 0, 0, 0, 2, 0, 1])}, + {name: 'IEND', data: new Uint8Array([])}, + ]); + expect(await pngChunks(await dataUriToBlob(pngPhys))).toEqual([ + {name: 'IHDR', data: new Uint8Array([0, 0, 0, 2, 0, 0, 0, 2, 8, 2, 0, 0, 0])}, + {name: 'pHYs', data: new Uint8Array([0, 0, 22, 37, 0, 0, 22, 37, 1])}, + {name: 'IDAT', data: new Uint8Array([8, 215, 99, 144, 53, 151, 0, 34, 6, 8, 5, 0, 11, 242, 1, 177])}, + ]); + expect(await pngChunks(await dataUriToBlob(pngEmpty))).toEqual([]); +}); + +test('imageInfo', async () => { + expect(await imageInfo(await dataUriToBlob(pngNoPhys))).toEqual({width: 1, dppx: 1}); + expect(await imageInfo(await dataUriToBlob(pngPhys))).toEqual({width: 2, dppx: 2}); + expect(await imageInfo(await dataUriToBlob(pngEmpty))).toEqual({width: 0, dppx: 1}); +}); -- cgit v1.2.3