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nodejs/node_modules/cron-parser/test/parser.js

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+var util = require('util');
+var test = require('tap').test;
+var CronParser = require('../lib/parser');
+
+// Globals
+
+test('load crontab file', function(t) {
+  CronParser.parseFile('./crontab.example', function(err, result) {
+    t.ifError(err, 'File read error');
+    t.ok(result, 'Crontab parsed parsed');
+
+    t.equal(Object.keys(result.variables).length, 2, 'variables length matches');
+    t.equal(Object.keys(result.errors).length, 0, 'errors length matches');
+    t.equal(result.expressions.length, 3, 'expressions length matches');
+
+    // Parse expressions
+    var next = null;
+
+    t.equal(result.expressions[0].hasNext(), true);
+    next = result.expressions[0].next();
+    t.ok(next, 'first date');
+
+    next = result.expressions[1].next();
+    t.ok(next, 'second date');
+
+    next = result.expressions[2].next();
+    t.ok(next, 'third date');
+
+    t.end();
+  });
+});
+
+test('no next date', function(t) {
+  var options = {
+    currentDate: new Date(2014, 0, 1),
+    endDate: new Date(2014, 0, 1)
+  };
+
+  try {
+    var interval = CronParser.parseExpression('* * 2 * *', options);
+    t.equal(interval.hasNext(), false);
+  } catch (err) {
+    t.ifError(err, 'Parse read error');
+  }
+
+  t.end();
+});
+
+test('prev with CurrentDate greater than 0ms should work', function(t) {
+  var options = {
+    currentDate: new Date('2017-06-13T18:21:25.002Z')
+  };
+
+  var interval = CronParser.parseExpression('*/5 * * * * *', options);
+  var prev = interval.prev();
+  t.equal(prev.getSeconds(), 25);
+
+  t.end();
+});