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// Compound index covered query tests with sort
// Include helpers for analyzing explain output.
load("jstests/libs/analyze_plan.js");
var coll = db.getCollection("covered_sort_3");
coll.drop();
for (i=0;i<100;i++) {
coll.insert({a:i, b:"strvar_"+(i%13), c:NumberInt(i%10)});
}
coll.insert;
coll.ensureIndex({a:1,b:-1,c:1});
// Test no query, sort on all fields in index order
var plan = coll.find({}, {b:1, c:1, _id:0}).sort({a:1,b:-1,c:1})
.hint({a:1, b:-1, c:1})
.explain("executionStats");
assert(isIndexOnly(plan.queryPlanner.winningPlan),
"sort.3.1 - indexOnly should be true on covered query");
assert.eq(0, plan.executionStats.totalDocsExamined,
"sort.3.1 - docs examined should be 0 for covered query");
print ('all tests pass');
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