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cypress: try to handle support file better during parallel run.

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When we run cypress tests in parallel (e.g. make check -j4), the
tests randomly fail with an uncaught error. The issue might be
because the same support file is shared between the different threads,
and they might access it at the same time. We try to create different
instances of the support file via preprocessing. Let's see whether it
makes the issue go away.

Issue's error message was:
"An uncaught error was detected outside of a test:
SyntaxError: The following error originated from your test code, not from Cypress.
Unexpected end of input"

Signed-off-by: Tamás Zolnai <tamas.zolnai@collabora.com>
Change-Id: I7b256cd686fb2b0e79ab602e95d197388a5aadca
This commit is contained in:
Tamás Zolnai 2020-12-17 18:22:59 +01:00 committed by Tamás Zolnai
parent fed8ed59a4
commit a13b1a93bc
1 changed files with 12 additions and 1 deletions
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13
cypress_test/plugins/index.js
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@ -1,6 +1,8 @@
/* global require */
var process = require('process');
var uuid = require('uuid');
var tasks = require('./tasks');
var blacklists = require('./blacklists');
var selectTests = require('cypress-select-tests');
@ -41,7 +43,16 @@ function plugin(on, config) {
config.defaultCommandTimeout = 10000;
}
on('file:preprocessor', selectTests(config, pickTests));
on('file:preprocessor', (file) => {
if (file.outputPath.endsWith('support/index.js')) {
var runUuid = uuid.v4();
var truncLength = file.outputPath.length - ('index.js').length;
file.outputPath = file.outputPath.substring(0, truncLength);
file.outputPath += runUuid + 'index.js';
}
return selectTests(config, pickTests)(file);
});
return config;
}