File size: 3,820 Bytes
1e92f2d
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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
// NOTE: if we decide to use this again in the future, see https://github.com/Automattic/wp-calypso/pull/85597
// for more context on why this was disabled. It needs to be updated to avoid
// adding so much noise to the channel.
import fs from 'fs';
import { exit } from 'process';
import yargs from 'yargs';

/* CLI Arguments */

const { argv } = yargs( process.argv ).options( {
	file: {
		type: 'string',
		required: true,
		describe: 'Path to a JSON file produced by Jest',
	},
} );

const filePath = argv.file;

/* Methods */

/**
 * Opens and parses the test result JSON produced by Jest.
 * @returns {JSON} JSON parsed test suite result.
 * @throws {Error} If file was not present.
 */
function openJestOutputJSON() {
	let data;
	try {
		fs.accessSync( filePath );
		data = fs.readFileSync( filePath, 'utf8' );
	} catch ( error ) {
		console.error( 'An error occurred while accessing the file:', error );
		exit();
	}
	return JSON.parse( data );
}

/**
 * Extracts all stack traces for failing test steps.
 * @param {JSON} results Test suite results produced by Jest.
 * @returns {{step: string, error: string}[]} Array of failure objects.
 */
function extractFailureMessages( results ) {
	const failureMessages = [];

	// Short circuit if nothing consistently failed.
	// Consistently here means failed on both initial run and then the retry.
	if ( ! results.numFailedTests ) {
		return failureMessages;
	}

	for ( const result of results.testResults ) {
		for ( const step of result.assertionResults ) {
			if ( step.failureMessages.length !== 0 ) {
				failureMessages.push( { step: step.ancestorTitles, error: step.failureMessages } );
			}
		}
	}
	return failureMessages;
}

/**
 * Builds the message to be posted to Slack using Block Kit.
 * @param {{step: string, error: string}[]} failures Array of failure objects.
 * @returns {JSON} Body for the POST request.
 */
function buildSlackMessage( failures ) {
	// Build the body using Slack Block Kit.
	const body = {
		channel: 'C02DQP0FP',
		blocks: [
			{
				type: 'section',
				text: {
					type: 'mrkdwn',
					text: `:x: E2E Build Failed on branch *${ process.env.tc_build_branch }*: ${ process.env.tc_project_name }: ${ process.env.tc_build_conf_name }, #${ process.env.tc_build_number }`,
				},
			},
			{
				type: 'section',
				text: {
					type: 'mrkdwn',
					text: `:teamcity: <${ process.env.BUILD_URL }|*Build*>`,
				},
			},
			{
				type: 'divider',
			},
			{
				type: 'header',
				text: {
					type: 'plain_text',
					text: 'Stacktraces',
				},
			},
		],
	};
	for ( const failure of failures ) {
		body.blocks.push(
			{
				type: 'section',
				text: {
					type: 'mrkdwn',
					text:
						'*' + failure.step.join( ': ' ) + '*' + '\n' + '```' + failure.error.pop() + '\n```',
				},
			},
			{ type: 'divider' }
		);
	}
	body.blocks.push( {
		type: 'section',
		text: {
			type: 'mrkdwn',
			// text: 'placeholder text so that I do not waste a8c GPT bandwidth',
			text: '@gpt, can you tell me more about the error(s) above, provide link(s) to the E2E test file in GitHub, and a snippet of the relevant code section?',
		},
	} );
	return body;
}

/**
 * Sends the message to Slack.
 * @param {JSON} body Body for the POST request.
 * @returns {Promise<Response>} Response from Slack endpoint.
 */
async function postMessage( body ) {
	return await fetch( 'https://slack.com/api/chat.postMessage', {
		method: 'POST',
		headers: {
			'Content-type': 'application/json; charset=utf-8',
			Authorization: `Bearer ${ process.env.slack_oauth_token }`,
		},
		body: JSON.stringify( body ),
	} );
}

const json = openJestOutputJSON( filePath );
if ( ! json ) {
	exit();
}
const failures = extractFailureMessages( json );
if ( failures.length === 0 ) {
	exit();
}
const body = buildSlackMessage( failures );
await postMessage( body );