27 lines
742 B
JavaScript
27 lines
742 B
JavaScript
// Test calculation of the 'millis' field in explain output.
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t = db.jstests_explain8;
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t.drop();
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t.ensureIndex( { a:1 } );
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for( i = 1000; i < 4000; i += 1000 ) {
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t.save( { a:i } );
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}
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// Run a query with one $or clause per a-value, each of which sleeps for 'a' milliseconds.
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function slow() {
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sleep( this.a );
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return true;
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}
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clauses = [];
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for( i = 1000; i < 4000; i += 1000 ) {
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clauses.push( { a:i, $where:slow } );
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}
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explain = t.find( { $or:clauses } ).explain( true );
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//printjson( explain );
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// Verify the duration of the whole query, and of each clause.
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assert.gt( explain.millis, 1000 - 500 + 2000 - 500 + 3000 - 500 );
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for( j = 0; j < 3; ++j ) {
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assert.gt( explain.clauses[ j ].millis, ( j + 1 ) * 1000 - 500 );
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}
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