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For repeatable unit test failures with "random" data it's useful to be able to create deterministic random number sequences. Introduce `Random.create(seed...)` which returns a object with the `Random` API (`id()`, `choice()`, etc.) initialized with the passed seed(s).
16 lines
675 B
JavaScript
16 lines
675 B
JavaScript
Tinytest.add('random', function (test) {
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// Deterministic with a specified seed, which should generate the
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// same sequence in all environments.
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//
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// For repeatable unit test failures using deterministic random
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// number sequences it's fine if a new Meteor release changes the
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// algorithm being used and it starts generating a different
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// sequence for a seed, as long as the sequence is consistent for
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// a particular release.
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var random = Random.create(0);
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test.equal(random.id(), "cp9hWvhg8GSvuZ9os");
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test.equal(random.id(), "3f3k6Xo7rrHCifQhR");
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test.equal(random.id(), "shxDnjWWmnKPEoLhM");
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test.equal(random.id(), "6QTjB8C5SEqhmz4ni");
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});
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