mirror of https://github.com/mongodb/mongo
66 lines
2.0 KiB
JavaScript
66 lines
2.0 KiB
JavaScript
/**
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* Tests for the $dateFromString expression with the optional 'onNull' parameter.
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*/
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const onNullValue = ISODate("2017-07-04T11:56:02Z");
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const coll = db.date_from_string_on_null;
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coll.drop();
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assert.commandWorked(coll.insert({_id: 0}));
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// Test that the 'onNull' value is returned when the 'dateString' is nullish.
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for (let inputDate of [null, undefined, "$missing"]) {
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assert.eq(
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[{_id: 0, date: onNullValue}],
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coll.aggregate({$project: {date: {$dateFromString: {dateString: inputDate, onNull: onNullValue}}}}).toArray(),
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);
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}
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// Test that null is returned when the 'timezone' or 'format' is nullish, regardless of the
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// 'onNull' value.
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for (let nullishValue of [null, undefined, "$missing"]) {
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assert.eq(
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[{_id: 0, date: null}],
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coll
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.aggregate({
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$project: {
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date: {
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$dateFromString: {
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dateString: "2018-02-06T11:56:02Z",
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format: nullishValue,
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onNull: onNullValue,
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},
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},
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},
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})
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.toArray(),
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);
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assert.eq(
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[{_id: 0, date: null}],
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coll
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.aggregate({
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$project: {
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date: {
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$dateFromString: {
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dateString: "2018-02-06T11:56:02Z",
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timezone: nullishValue,
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onNull: onNullValue,
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},
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},
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},
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})
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.toArray(),
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);
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}
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// Test that 'onNull' can be any type, not just an ISODate.
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for (let onNull of [{}, 5, "Not a date", null, undefined]) {
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assert.eq(
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[{_id: 0, date: onNull}],
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coll.aggregate({$project: {date: {$dateFromString: {dateString: "$missing", onNull: onNull}}}}).toArray(),
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);
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}
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assert.eq(
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[{_id: 0}],
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coll.aggregate({$project: {date: {$dateFromString: {dateString: "$missing", onNull: "$missing"}}}}).toArray(),
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);
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