42 lines
1.7 KiB
JavaScript
42 lines
1.7 KiB
JavaScript
// Ensure that the latest version of the shell (with no particular readMode set) can issue find
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// operations against a 3.0 server. The shell should read the wire version and fall back to "legacy"
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// readMode.
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(function() {
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'use strict';
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var storageEngine = jsTest.options().storageEngine || 'wiredTiger';
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var conn30 = MongoRunner.runMongod({binVersion: '3.0', storageEngine: storageEngine});
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assert.neq(conn30, null, 'unable to start 3.0 mongod');
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// Force writeMode to "commands" so that we can check the results of write operations.
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conn30.forceWriteMode('commands');
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// Forcing the readMode to "compatibility" and then asking for the readMode should cause the
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// shell to resolve the readMode to "legacy".
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conn30.forceReadMode('compatibility');
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assert.eq('legacy', conn30.readMode());
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var testDB = conn30.getDB('test');
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var coll = testDB.readmode_compatibility;
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coll.drop();
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for (var i = 0; i < 5; i++) {
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assert.writeOK(coll.insert({_id: i}));
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}
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// Use a batchSize of 2 to ensure that we exercise both find and getMore.
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conn30.forceReadMode('compatibility');
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assert.eq(5, coll.find().batchSize(2).itcount());
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assert.eq('legacy', conn30._readMode);
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MongoRunner.stopMongod(conn30);
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// With the latest version of mongod, forcing the readMode to "compatibility" and then asking
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// for the readMode should cause the shell to resolve the readMode to "commands".
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var connLatest = MongoRunner.runMongod({storageEngine: storageEngine});
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assert.neq(connLatest, null, 'unable to start 3.2 mongod');
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connLatest.forceReadMode('compatibility');
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assert.eq('commands', connLatest.readMode());
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})();
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