tstest/ts_tapbundle/tapbundle.expect.wrapper.ts

81 lines
2.8 KiB
TypeScript

import { expect as smartExpect } from '@push.rocks/smartexpect';
import { generateDiff } from './tapbundle.utilities.diff.js';
import { ProtocolEmitter } from '../dist_ts_tapbundle_protocol/index.js';
import type { IEnhancedError } from '../dist_ts_tapbundle_protocol/index.js';
// Store the protocol emitter for event emission
let protocolEmitter: ProtocolEmitter | null = null;
/**
* Set the protocol emitter for enhanced error reporting
*/
export function setProtocolEmitter(emitter: ProtocolEmitter) {
protocolEmitter = emitter;
}
/**
* Enhanced expect wrapper that captures assertion failures and generates diffs
*/
export function createEnhancedExpect() {
return new Proxy(smartExpect, {
apply(target, thisArg, argumentsList: any[]) {
const expectation = target.apply(thisArg, argumentsList);
// Wrap common assertion methods
const wrappedExpectation = new Proxy(expectation, {
get(target, prop, receiver) {
const originalValue = Reflect.get(target, prop, receiver);
// Wrap assertion methods that compare values
if (typeof prop === 'string' && typeof originalValue === 'function' && ['toEqual', 'toBe', 'toMatch', 'toContain'].includes(prop)) {
return function(expected: any) {
try {
return originalValue.apply(target, arguments);
} catch (error: any) {
// Enhance the error with diff information
const actual = argumentsList[0];
const enhancedError: IEnhancedError = {
message: error.message,
stack: error.stack,
actual,
expected,
type: 'assertion'
};
// Generate diff if applicable
if (prop === 'toEqual' || prop === 'toBe') {
const diff = generateDiff(expected, actual);
if (diff) {
enhancedError.diff = diff;
}
}
// Emit assertion:failed event if protocol emitter is available
if (protocolEmitter) {
const event = {
eventType: 'assertion:failed' as const,
timestamp: Date.now(),
data: {
error: enhancedError
}
};
console.log(protocolEmitter.emitEvent(event));
}
// Re-throw the enhanced error
throw error;
}
};
}
return originalValue;
}
});
return wrappedExpectation;
}
});
}
// Create the enhanced expect function
export const expect = createEnhancedExpect();