54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
'use strict';
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const concordance = require('concordance');
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const dotProp = require('dot-prop');
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const generate = require('babel-generator').default;
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const concordanceOptions = require('./concordance-options').default;
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// When adding patterns, don't forget to add to
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// https://github.com/avajs/babel-preset-transform-test-files/blob/master/espower-patterns.json
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// Then release a new version of that preset and bump the SemVer range here.
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const PATTERNS = [
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't.truthy(value, [message])',
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't.falsy(value, [message])',
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't.true(value, [message])',
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't.false(value, [message])',
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't.regex(contents, regex, [message])',
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't.notRegex(contents, regex, [message])'
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];
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const computeStatement = node => generate(node, {quotes: 'single'}).code;
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const getNode = (ast, path) => dotProp.get(ast, path.replace(/\//g, '.'));
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const formatter = context => {
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const ast = JSON.parse(context.source.ast);
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const args = context.args[0].events;
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return args
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.map(arg => {
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const node = getNode(ast, arg.espath);
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const statement = computeStatement(node);
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const formatted = concordance.format(arg.value, concordanceOptions);
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return [statement, formatted];
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})
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.reverse();
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};
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const enhanceAssert = (pass, fail, assertions) => {
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const empower = require('empower-core');
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return empower(assertions, {
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destructive: true,
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onError(event) {
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const error = event.error;
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if (event.powerAssertContext) { // Context may be missing in internal tests.
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error.statements = formatter(event.powerAssertContext);
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}
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fail(this, error);
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},
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onSuccess() {
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pass(this);
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},
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patterns: PATTERNS,
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bindReceiver: false
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});
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};
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module.exports = enhanceAssert;
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