75 lines
2.3 KiB
JavaScript
75 lines
2.3 KiB
JavaScript
// Basic examples for $min/$max
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(function() {
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"use strict";
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let res;
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const coll = db.update_min_max;
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coll.drop();
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// $min for number
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coll.insert({_id: 1, a: 2});
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res = coll.update({_id: 1}, {$min: {a: 1}});
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assert.commandWorked(res);
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assert.eq(coll.findOne({_id: 1}).a, 1);
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// $max for number
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coll.insert({_id: 2, a: 2});
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res = coll.update({_id: 2}, {$max: {a: 1}});
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assert.commandWorked(res);
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assert.eq(coll.findOne({_id: 2}).a, 2);
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// $min for Date
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let date = new Date();
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coll.insert({_id: 3, a: date});
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// setMilliseconds() will roll over to change seconds if necessary.
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date.setMilliseconds(date.getMilliseconds() + 2);
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// Test that we have advanced the date and it's no longer the same as the one we inserted.
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assert.eq(null, coll.findOne({_id: 3, a: date}));
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const origDoc = coll.findOne({_id: 3});
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assert.commandWorked(coll.update({_id: 3}, {$min: {a: date}}));
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assert.eq(coll.findOne({_id: 3}).a, origDoc.a);
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// $max for Date
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coll.insert({_id: 4, a: date});
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// setMilliseconds() will roll over to change seconds if necessary.
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date.setMilliseconds(date.getMilliseconds() + 2);
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// Test that we have advanced the date and it's no longer the same as the one we inserted.
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assert.eq(null, coll.findOne({_id: 4, a: date}));
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res = coll.update({_id: 4}, {$max: {a: date}});
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assert.commandWorked(res);
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assert.eq(coll.findOne({_id: 4}).a, date);
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// $max for small number
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coll.insert({_id: 5, a: 1e-15});
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// Slightly bigger than 1e-15.
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const biggerval = 0.000000000000001000000000000001;
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res = coll.update({_id: 5}, {$max: {a: biggerval}});
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assert.commandWorked(res);
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assert.eq(coll.findOne({_id: 5}).a, biggerval);
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// $min for a small number
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coll.insert({_id: 6, a: biggerval});
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res = coll.update({_id: 6}, {$min: {a: 1e-15}});
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assert.commandWorked(res);
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assert.eq(coll.findOne({_id: 6}).a, 1e-15);
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// $max with positional operator
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let insertdoc = {_id: 7, y: [{a: 2}, {a: 6}, {a: [9, 1, 1]}]};
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coll.insert(insertdoc);
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res = coll.update({_id: 7, "y.a": 6}, {$max: {"y.$.a": 7}});
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assert.commandWorked(res);
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insertdoc.y[1].a = 7;
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assert.docEq(coll.findOne({_id: 7}), insertdoc);
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// $min with positional operator
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insertdoc = {
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_id: 8,
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y: [{a: 2}, {a: 6}, {a: [9, 1, 1]}]
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};
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coll.insert(insertdoc);
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res = coll.update({_id: 8, "y.a": 6}, {$min: {"y.$.a": 5}});
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assert.commandWorked(res);
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insertdoc.y[1].a = 5;
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assert.docEq(coll.findOne({_id: 8}), insertdoc);
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}());
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