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// In SERVER-20169, the $range expression was added to the aggregation framework. In this file, we
// test the behavior and error cases of this expression.
load("jstests/aggregation/extras/utils.js"); // For assertErrorCode.
(function() {
"use strict";
var coll = db.range;
coll.drop();
// We need an input document to receive an output document.
coll.insert({});
var rangeObj = [1];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
28667,
"range requires two" + " or three arguments");
rangeObj = ["a", 1];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34443,
"range requires a" + " numeric starting value");
rangeObj = [1.1, 1];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34444,
"range requires an" + " integral starting value");
rangeObj = [1, "a"];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34445,
"range requires a" + " numeric ending value");
rangeObj = [1, 1.1];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34446,
"range requires an" + " integral ending value");
rangeObj = [1, 3, "a"];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34447,
"range requires a" + " numeric step value");
rangeObj = [1, 3, 1.1];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34448,
"range requires an" + " integral step value");
rangeObj = [1, 3, 0];
assertErrorCode(coll,
[{$project: {range: {$range: rangeObj}}}],
34449,
"range requires a" + " non-zero step value");
}());
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