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/**
* Tests for the $dateFromString expression with the optional 'onError' parameter.
*/
(function() {
"use strict";
load("jstests/aggregation/extras/utils.js"); // For assertErrMsgContains.
const onErrorValue = ISODate("2017-07-04T11:56:02Z");
const coll = db.date_from_string_on_error;
coll.drop();
assert.writeOK(coll.insert({_id: 0}));
// Test that the 'onError' value is returned when 'dateString' is not a valid date/time.
for (let inputDate of ["July 4th",
"12:50:53",
"2017",
"60.Monday1770/06:59",
"Not even close",
"July 4th, 10000"]) {
assert.eq(
[{_id: 0, date: onErrorValue}],
coll.aggregate({
$project: {date: {$dateFromString: {dateString: inputDate, onError: onErrorValue}}}
})
.toArray());
}
// Test that the 'onError' value is returned when 'dateString' is not a string.
for (let inputDate of [5, {year: 2018, month: 2, day: 5}, ["2018-02-05"]]) {
assert.eq(
[{_id: 0, date: onErrorValue}],
coll.aggregate({
$project: {date: {$dateFromString: {dateString: inputDate, onError: onErrorValue}}}
})
.toArray());
}
// Test that the 'onError' value is ignored when 'dateString' is nullish.
for (let inputDate of [null, undefined, "$missing"]) {
assert.eq(
[{_id: 0, date: null}],
coll.aggregate({
$project: {date: {$dateFromString: {dateString: inputDate, onError: onErrorValue}}}
})
.toArray());
}
// Test that the 'onError' value is returned for unmatched format strings.
for (let inputFormat of ["%Y", "%Y-%m-%dT%H", "Y-m-d"]) {
assert.eq(
[{_id: 0, date: onErrorValue}],
coll.aggregate({
$project: {
date: {
$dateFromString:
{dateString: "2018-02-06", format: inputFormat, onError: onErrorValue}
}
}
})
.toArray());
}
// Test that null is returned when the 'timezone' or 'format' is nullish, regardless of the
// 'onError' value.
for (let nullishValue of [null, undefined, "$missing"]) {
assert.eq([{_id: 0, date: null}],
coll.aggregate({
$project: {
date: {
$dateFromString: {
dateString: "2018-02-06T11:56:02Z",
format: nullishValue,
onError: onErrorValue
}
}
}
})
.toArray());
assert.eq([{_id: 0, date: null}],
coll.aggregate({
$project: {
date: {
$dateFromString: {
dateString: "2018-02-06T11:56:02Z",
timezone: nullishValue,
onError: onErrorValue
}
}
}
})
.toArray());
}
// Test that onError is returned when the input is not a string and other parameters are
// nullish.
assert.eq(
[{_id: 0, date: onErrorValue}],
coll.aggregate({
$project:
{date: {$dateFromString: {dateString: 5, format: null, onError: onErrorValue}}}
})
.toArray());
assert.eq(
[{_id: 0, date: onErrorValue}],
coll.aggregate({
$project: {
date:
{$dateFromString: {dateString: 5, timezone: "$missing", onError: onErrorValue}}
}
})
.toArray());
// Test that onError is ignored when the input is an invalid string and other parameters are
// nullish.
assert.eq(
[{_id: 0, date: null}],
coll.aggregate({
$project: {
date: {
$dateFromString:
{dateString: "Invalid date string", format: null, onError: onErrorValue}
}
}
})
.toArray());
assert.eq([{_id: 0, date: null}],
coll.aggregate({
$project: {
date: {
$dateFromString: {
dateString: "Invalid date string",
timezone: "$missing",
onError: onErrorValue
}
}
}
})
.toArray());
// Test that 'onError' can be any type, not just an ISODate.
for (let onError of [{}, 5, "Not a date", null, undefined]) {
assert.eq(
[{_id: 0, date: onError}],
coll.aggregate(
{$project: {date: {$dateFromString: {dateString: "invalid", onError: onError}}}})
.toArray());
}
// Test that a missing 'onError' value results in no output field when used within a $project
// stage.
assert.eq(
[{_id: 0}],
coll.aggregate(
{$project: {date: {$dateFromString: {dateString: "invalid", onError: "$missing"}}}})
.toArray());
// Test that 'onError' is ignored when the 'format' is invalid.
assertErrMsgContains(
coll,
[{
$project:
{date: {$dateFromString: {dateString: "4/26/1992", format: 5, onError: onErrorValue}}}
}],
40684,
"$dateFromString requires that 'format' be a string");
assertErrMsgContains(
coll,
[{
$project: {
date: {$dateFromString: {dateString: "4/26/1992", format: "%n", onError: onErrorValue}}
}
}],
18536,
"Invalid format character '%n' in format string");
})();
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