89 lines
3.0 KiB
JavaScript
89 lines
3.0 KiB
JavaScript
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/**
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* @fileoverview Installs our custom equality matchers in Jasmine.
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*/
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goog.module('protobuf.testing.jasmineProtoBuf');
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const BufferDecoder = goog.require('protobuf.binary.BufferDecoder');
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const ByteString = goog.require('protobuf.ByteString');
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const {arrayBufferEqual} = goog.require('protobuf.binary.typedArrays');
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/**
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* A function that ensures custom equality for ByteStrings.
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* Since Jasmine compare structure by default Bytestrings might be equal that
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* are not equal since ArrayBuffers still compare content in g3.
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* (Jasmine fix upstream: https://github.com/jasmine/jasmine/issues/1687)
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* Also ByteStrings that are equal might compare non equal in jasmine of the
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* base64 string has been initialized.
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* @param {*} first
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* @param {*} second
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* @return {boolean|undefined}
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*/
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const byteStringEquality = (first, second) => {
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if (second instanceof ByteString) {
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return second.equals(first);
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}
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// Intentionally not returning anything, this signals to jasmine that we
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// did not perform any equality on the given objects.
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};
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/**
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* A function that ensures custom equality for ArrayBuffers.
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* By default Jasmine does not compare the content of an ArrayBuffer and thus
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* will return true for buffers with the same length but different content.
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* @param {*} first
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* @param {*} second
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* @return {boolean|undefined}
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*/
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const arrayBufferCustomEquality = (first, second) => {
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if (first instanceof ArrayBuffer && second instanceof ArrayBuffer) {
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return arrayBufferEqual(first, second);
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}
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// Intentionally not returning anything, this signals to jasmine that we
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// did not perform any equality on the given objects.
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};
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/**
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* A function that ensures custom equality for ArrayBuffers.
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* By default Jasmine does not compare the content of an ArrayBuffer and thus
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* will return true for buffers with the same length but different content.
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* @param {*} first
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* @param {*} second
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* @return {boolean|undefined}
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*/
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const bufferDecoderCustomEquality = (first, second) => {
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if (first instanceof BufferDecoder && second instanceof BufferDecoder) {
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return first.asByteString().equals(second.asByteString());
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}
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// Intentionally not returning anything, this signals to jasmine that we
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// did not perform any equality on the given objects.
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};
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/**
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* Overrides the default ArrayBuffer toString method ([object ArrayBuffer]) with
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* a more readable representation.
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*/
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function overrideArrayBufferToString() {
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/**
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* Returns the hex values of the underlying bytes of the ArrayBuffer.
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*
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* @override
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* @return {string}
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*/
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ArrayBuffer.prototype.toString = function() {
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const arr = Array.from(new Uint8Array(this));
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return 'ArrayBuffer[' +
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arr.map((b) => '0x' + (b & 0xFF).toString(16).toUpperCase())
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.join(', ') +
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']';
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};
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}
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beforeEach(() => {
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jasmine.addCustomEqualityTester(arrayBufferCustomEquality);
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jasmine.addCustomEqualityTester(bufferDecoderCustomEquality);
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jasmine.addCustomEqualityTester(byteStringEquality);
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overrideArrayBufferToString();
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});
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