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Diffstat (limited to 'jstests/explain8.js')
-rw-r--r-- | jstests/explain8.js | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/jstests/explain8.js b/jstests/explain8.js new file mode 100644 index 00000000000..fde6adbd8f4 --- /dev/null +++ b/jstests/explain8.js @@ -0,0 +1,24 @@ +// Test calculation of the 'millis' field in explain output. + +t = db.jstests_explain8; +t.drop(); + +t.ensureIndex( { a:1 } ); +for( i = 1000; i < 4000; i += 1000 ) { + t.save( { a:i } ); +} + +// Run a query with one $or clause per a-value, each of which sleeps for 'a' milliseconds. +function slow() { + sleep( this.a ); + return true; +} +clauses = []; +for( i = 1000; i < 4000; i += 1000 ) { + clauses.push( { a:i, $where:slow } ); +} +explain = t.find( { $or:clauses } ).explain( true ); +//printjson( explain ); + +// Verify the duration of the whole query, and of each clause. +assert.gt( explain.millis, 1000 - 500 + 2000 - 500 + 3000 - 500 ); |