96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
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var coll = "numbers";
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db[coll].drop();
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for (i=0; i<100; i++) {
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db[coll].save({_id : i, mod : [i%2, i%3, i%5]});
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}
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print("-----LIMIT-----");
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print("normal limit");
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var doc = db.runCommand({ aggregate : coll, pipeline : [{ $limit : 2}]});
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assert.eq(doc.result.length, 2, tojson(doc));
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print("limit larger than result size");
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doc = db.runCommand({ aggregate : coll, pipeline : [{ $limit : 200}]});
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assert.eq(doc.result.length, 100, tojson(doc));
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print("limit on sort");
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doc = db.runCommand({ aggregate : coll, pipeline : [{$sort : {_id : -1}}, {$limit : 3}]});
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r = doc.result;
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assert.eq(doc.result.length, 3);
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for (var i=0; i<r; i++) {
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assert.eq(100 - r[i]._id, i, tojson(doc));
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}
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print("TODO: invalid limit"); // once assert has been replaced with uassert
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print("-----SKIP------");
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print("normal skip");
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doc = db.runCommand({ aggregate : coll, pipeline : [{ $skip : 95}]});
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assert.eq(doc.result.length, 5, tojson(doc));
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print("skip larger than result size");
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doc = db.runCommand({ aggregate : coll, pipeline : [{ $skip : 102}]});
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assert.eq(doc.result.length, 0, tojson(doc));
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print("check skip results");
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doc = db.runCommand({ aggregate : coll, pipeline : [{ $sort : {_id : 1}}, {$skip : 6}, {$limit : 3}]});
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assert.eq(doc.result.length, 3, tojson(doc));
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for (var i=0; i<3; i++) {
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assert.eq(i+6, doc.result[i]._id, tojson(doc));
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}
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print("TODO: invalid skip"); // once assert has been replaced with uassert
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print("on virtual collection");
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doc = db.runCommand({ aggregate : coll, pipeline : [
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{
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$unwind : "$mod"
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},
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{
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$project : { m : "$mod" }
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},
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{
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$sort : {
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m : 1,
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_id : -1
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}
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},
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{
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$skip : 150
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},
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{
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$limit : 5
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}
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]});
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assert.eq(doc.result.length, 5);
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for (var i=0; i<5; i++) {
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assert.eq(1, doc.result[i].m, tojson(doc));
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}
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assert.eq(doc.result[0]._id, 55, tojson(doc));
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assert.eq(doc.result[1]._id, 53, tojson(doc));
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assert.eq(doc.result[2]._id, 52, tojson(doc));
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assert.eq(doc.result[3]._id, 51, tojson(doc));
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assert.eq(doc.result[4]._id, 51, tojson(doc));
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print("size 0 collection");
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db[coll].drop();
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doc = db.runCommand({ aggregate : coll, pipeline : [{$skip : 6}]});
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assert.eq(doc.ok, 1);
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assert.eq(doc.result.length, 0);
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doc = db.runCommand({ aggregate : coll, pipeline : [{$limit : 3}]});
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assert.eq(doc.ok, 1);
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assert.eq(doc.result.length, 0);
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