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path: root/jstests/core/index_bounds_minkey.js
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// Index bounds generation tests for MinKey values.
// @tags: [requires_non_retryable_writes, assumes_unsharded_collection]
(function() {
    "use strict";

    load("jstests/libs/analyze_plan.js");  // For assertCoveredQueryAndCount.

    const coll = db.index_bounds_minkey;
    coll.drop();

    assert.commandWorked(coll.createIndex({a: 1}));
    assert.writeOK(coll.insert({a: MinKey}));

    // Test that queries involving comparison operators with MinKey are covered.
    const proj = {a: 1, _id: 0};
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$gt: MinKey}}, project: proj, count: 1});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$gte: MinKey}}, project: proj, count: 1});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$lt: MinKey}}, project: proj, count: 0});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$lte: MinKey}}, project: proj, count: 1});

    // Test that all documents are considered greater than MinKey, regardless of the presence of
    // the queried field 'a'.
    coll.remove({});
    assert.writeOK(coll.insert({a: "string"}));
    assert.writeOK(coll.insert({a: {b: 1}}));
    assert.writeOK(coll.insert({}));
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$gt: MinKey}}, project: proj, count: 3});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$gte: MinKey}}, project: proj, count: 3});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$lt: MinKey}}, project: proj, count: 0});
    assertCoveredQueryAndCount(
        {collection: coll, query: {a: {$lte: MinKey}}, project: proj, count: 0});
})();