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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | import { TextEncoder, TextDecoder } from 'util';
import dicomImageLoader from '@cornerstonejs/dicom-image-loader';
import OHIF from '@ohif/core';
import {
registerNaturalizedDatasetForLocalWadouri,
releaseLocalWadouriRegistrations,
} from './registerNaturalizedDatasetForLocalWadouri';
// jsdom does not expose TextEncoder/TextDecoder, which dcmjs's buffer streams need.
if (typeof global.TextEncoder === 'undefined') {
global.TextEncoder = TextEncoder;
}
if (typeof global.TextDecoder === 'undefined') {
global.TextDecoder = TextDecoder;
}
jest.mock('@cornerstonejs/dicom-image-loader', () => ({
__esModule: true,
default: {
wadouri: {
fileManager: {
add: jest.fn(() => 'dicomfile:0'),
remove: jest.fn(),
},
dataSetCacheManager: {
isLoaded: jest.fn(() => false),
unload: jest.fn(),
},
},
},
}));
jest.mock('@ohif/core', () => ({
__esModule: true,
default: {
classes: {
MetadataProvider: {
addImageIdToUIDs: jest.fn(),
},
},
log: {
debug: jest.fn(),
},
},
}));
const EXPLICIT_VR_LITTLE_ENDIAN = '1.2.840.10008.1.2.1';
const addBlob = dicomImageLoader.wadouri.fileManager.add;
const addImageIdToUIDs = OHIF.classes.MetadataProvider.addImageIdToUIDs;
function makeDataset(extra = {}) {
return {
_meta: { TransferSyntaxUID: { vr: 'UI', Value: [EXPLICIT_VR_LITTLE_ENDIAN] } },
SOPInstanceUID: '1.2.3.4.5',
StudyInstanceUID: '1.2.3.4',
SeriesInstanceUID: '1.2.3.4.1',
PatientID: 'TEST-PATIENT',
...extra,
};
}
describe('registerNaturalizedDatasetForLocalWadouri', () => {
beforeEach(() => {
jest.clearAllMocks();
});
afterEach(() => {
// Drain the module-level registration tracking between tests.
releaseLocalWadouriRegistrations();
});
it('skips datasets without pixel data (SR/RTSTRUCT) and does not mutate them', () => {
const dataset = makeDataset({
SOPClassUID: '1.2.840.10008.5.1.4.1.1.88.33',
Modality: 'SR',
});
const imageId = registerNaturalizedDatasetForLocalWadouri(dataset);
// No frames to serve through the image loader: nothing registered, no Blob pinned.
expect(imageId).toBeUndefined();
expect(addBlob).not.toHaveBeenCalled();
expect(addImageIdToUIDs).not.toHaveBeenCalled();
// The serialized form of an SR must not gain a (0028,0008) element or a url.
expect(Object.prototype.hasOwnProperty.call(dataset, 'NumberOfFrames')).toBe(false);
expect(Object.prototype.hasOwnProperty.call(dataset, 'url')).toBe(false);
});
it('registers a single-frame pixel-bearing dataset without stamping NumberOfFrames', () => {
const dataset = makeDataset({
SOPClassUID: '1.2.840.10008.5.1.4.1.1.7',
Modality: 'OT',
PixelData: new Uint8Array(4).buffer,
});
const imageId = registerNaturalizedDatasetForLocalWadouri(dataset);
expect(Object.prototype.hasOwnProperty.call(dataset, 'NumberOfFrames')).toBe(false);
expect(imageId).toBe('dicomfile:0');
expect(addBlob).toHaveBeenCalledTimes(1);
// Single frame: the bare imageId is mapped, no ?frame= query.
expect(addImageIdToUIDs).toHaveBeenCalledTimes(1);
expect(addImageIdToUIDs).toHaveBeenCalledWith('dicomfile:0', {
StudyInstanceUID: '1.2.3.4',
SeriesInstanceUID: '1.2.3.4.1',
SOPInstanceUID: '1.2.3.4.5',
frameNumber: 1,
});
});
it('still registers per-frame imageIds (and NumberOfFrames) for a multiframe SEG', () => {
const dataset = makeDataset({
SOPClassUID: '1.2.840.10008.5.1.4.1.1.66.4',
Modality: 'SEG',
PerFrameFunctionalGroupsSequence: [{}, {}, {}],
});
registerNaturalizedDatasetForLocalWadouri(dataset);
// Legitimately multiframe: the count is derived from the per-frame groups
// and must be serialized (enumerable).
expect(dataset.NumberOfFrames).toBe(3);
expect(Object.getOwnPropertyDescriptor(dataset, 'NumberOfFrames').enumerable).toBe(true);
expect(addImageIdToUIDs).toHaveBeenCalledTimes(3);
for (let frame = 1; frame <= 3; frame++) {
expect(addImageIdToUIDs).toHaveBeenNthCalledWith(frame, `dicomfile:0?frame=${frame}`, {
StudyInstanceUID: '1.2.3.4',
SeriesInstanceUID: '1.2.3.4.1',
SOPInstanceUID: '1.2.3.4.5',
frameNumber: frame,
});
}
});
it('keeps the wadouri imageId on the dataset without making it serializable', () => {
const dataset = makeDataset({
SOPClassUID: '1.2.840.10008.5.1.4.1.1.66.4',
Modality: 'SEG',
PixelData: new Uint8Array(4).buffer,
});
registerNaturalizedDatasetForLocalWadouri(dataset);
expect(dataset.url).toBe('dicomfile:0');
expect(Object.getOwnPropertyDescriptor(dataset, 'url').enumerable).toBe(false);
});
it('releases the retained Blob and cached dataset on releaseLocalWadouriRegistrations', () => {
const dataset = makeDataset({
SOPClassUID: '1.2.840.10008.5.1.4.1.1.66.4',
Modality: 'SEG',
PixelData: new Uint8Array(4).buffer,
});
dicomImageLoader.wadouri.fileManager.add.mockReturnValueOnce('dicomfile:7');
// Simulate a parsed dataset held with a refcount of 2 (e.g. two frame loads).
dicomImageLoader.wadouri.dataSetCacheManager.isLoaded
.mockReturnValueOnce(true)
.mockReturnValueOnce(true)
.mockReturnValue(false);
registerNaturalizedDatasetForLocalWadouri(dataset);
releaseLocalWadouriRegistrations();
expect(dicomImageLoader.wadouri.fileManager.remove).toHaveBeenCalledWith(7);
expect(dicomImageLoader.wadouri.dataSetCacheManager.unload).toHaveBeenCalledTimes(2);
expect(dicomImageLoader.wadouri.dataSetCacheManager.unload).toHaveBeenCalledWith('7');
// Idempotent: the tracking set was drained.
dicomImageLoader.wadouri.fileManager.remove.mockClear();
releaseLocalWadouriRegistrations();
expect(dicomImageLoader.wadouri.fileManager.remove).not.toHaveBeenCalled();
});
});
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