92 lines
3.0 KiB
JavaScript
92 lines
3.0 KiB
JavaScript
// SERVER-7282 Faulty logic when testing maximum collection name length.
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// constants from server
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var maxNsLength = 127;
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var maxNsCollectionLength = 120;
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var myDb = db.getSiblingDB("ns_length");
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myDb.dropDatabase(); // start empty
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function mkStr(length) {
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s = "";
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while (s.length < length) {
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s += "x";
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}
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return s;
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}
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function canMakeCollectionWithName(name) {
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assert.eq(myDb.stats().storageSize, 0, "initial conditions");
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var success = false;
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try {
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// may either throw or return an error
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success = !(myDb[name].insert({}).hasWriteError());
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} catch (e) {
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success = false;
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}
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if (!success) {
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assert.eq(myDb.stats().storageSize, 0, "no files should be created on error");
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return false;
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}
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myDb.dropDatabase();
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return true;
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}
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function canMakeIndexWithName(collection, name) {
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var success = collection.ensureIndex({x:1}, {name: name}).ok;
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if (success) {
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assert.commandWorked(collection.dropIndex(name));
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}
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return success;
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}
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function canRenameCollection(from, to) {
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var success = myDb[from].renameCollection(to).ok;
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if (success) {
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// put it back
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assert.commandWorked(myDb[to].renameCollection(from));
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}
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return success;
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}
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// test making collections around the name limit
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var prefixOverhead = (myDb.getName() + ".").length;
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var maxCollectionNameLength = maxNsCollectionLength - prefixOverhead;
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for (var i = maxCollectionNameLength - 3; i <= maxCollectionNameLength + 3; i++) {
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assert.eq(canMakeCollectionWithName(mkStr(i)),
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i <= maxCollectionNameLength,
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"ns name length = " + (prefixOverhead + i));
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}
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// test making indexes around the name limit
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var collection = myDb.collection;
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collection.insert({});
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var maxIndexNameLength = maxNsLength - (collection.getFullName() + ".$").length;
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for (var i = maxIndexNameLength - 3; i <= maxIndexNameLength + 3; i++) {
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assert.eq(canMakeIndexWithName(collection, mkStr(i)),
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i <= maxIndexNameLength,
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"index ns name length = " + ((collection.getFullName() + ".$").length + i));
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}
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// test renaming collections with the destination around the name limit
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myDb.from.insert({});
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for (var i = maxCollectionNameLength - 3; i <= maxCollectionNameLength + 3; i++) {
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assert.eq(canRenameCollection("from", mkStr(i)),
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i <= maxCollectionNameLength,
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"new ns name length = " + (prefixOverhead + i));
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}
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// test renaming collections with the destination around the name limit due to long indexe names
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myDb.from.ensureIndex({a:1}, {name: mkStr(100)});
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var indexNsNameOverhead = (myDb.getName() + "..$").length + 100; // index ns name - collection name
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var maxCollectionNameWithIndex = maxNsLength - indexNsNameOverhead;
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for (var i = maxCollectionNameWithIndex - 3; i <= maxCollectionNameWithIndex + 3; i++) {
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assert.eq(canRenameCollection("from", mkStr(i)),
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i <= maxCollectionNameWithIndex,
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"index ns name length = " + (indexNsNameOverhead + i));
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}
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