1 files changed, 64 insertions, 0 deletions
diff --git a/jstests/core/drop_indexes.js b/jstests/core/drop_indexes.js
new file mode 100644
index 00000000000..8250d267980
--- /dev/null
+++ b/jstests/core/drop_indexes.js
@@ -0,0 +1,64 @@
+// Cannot implicitly shard accessed collections because of extra shard key index in sharded
+// collection. Cannot be handled correctly in a stepdown suite since dropIndexes() with multiple
+// names cannot be retried properly.
+// @tags: [assumes_no_implicit_index_creation, does_not_support_stepdowns]
+(function() {
+'use strict';
+
+const t = db.drop_indexes;
+t.drop();
+
+/**
+ * Extracts index names from listIndexes result.
+ */
+function getIndexNames(cmdRes) {
+    return t.getIndexes().map(spec => spec.name);
+}
+
+/**
+ * Checks that collection contains the given list of non-id indexes and nothing else.
+ */
+function assertIndexes(expectedIndexNames, msg) {
+    const actualIndexNames = getIndexNames();
+    const testMsgSuffix = () => msg + ': expected ' + tojson(expectedIndexNames) + ' but got ' +
+        tojson(actualIndexNames) + ' instead.';
+    assert.eq(expectedIndexNames.length + 1,
+              actualIndexNames.length,
+              'unexpected number of indexes after ' + testMsgSuffix());
+    assert(actualIndexNames.includes('_id_'),
+           '_id index missing after ' + msg + ': ' + tojson(actualIndexNames));
+    for (let expectedIndexName of expectedIndexNames) {
+        assert(actualIndexNames.includes(expectedIndexName),
+               expectedIndexName + ' index missing after ' + testMsgSuffix());
+    }
+}
+
+assert.commandWorked(t.insert({_id: 1, a: 2, b: 3, c: 1, d: 1, e: 1}));
+assertIndexes([], 'inserting test document');
+
+assert.commandWorked(t.createIndex({a: 1}));
+assert.commandWorked(t.createIndex({b: 1}));
+assert.commandWorked(t.createIndex({c: 1}));
+assert.commandWorked(t.createIndex({d: 1}));
+assert.commandWorked(t.createIndex({e: 1}));
+assertIndexes(['a_1', 'b_1', 'c_1', 'd_1', 'e_1'], 'creating indexes');
+
+// Drop multiple indexes.
+assert.commandWorked(t.dropIndexes(['c_1', 'd_1']));
+assertIndexes(['a_1', 'b_1', 'e_1'], 'dropping {c: 1} and {d: 1}');
+
+// Must drop all the indexes provided or none at all - for example, if one of the index names
+// provided is invalid.
+let ex = assert.throws(() => {
+    t.dropIndexes(['a_1', '_id_']);
+});
+assert.commandFailedWithCode(ex, ErrorCodes.InvalidOptions);
+assertIndexes(['a_1', 'b_1', 'e_1'], 'failed dropIndexes command with _id index');
+
+// List of index names must contain only strings.
+ex = assert.throws(() => {
+    t.dropIndexes(['a_1', 123]);
+});
+assert.commandFailedWithCode(ex, ErrorCodes.TypeMismatch);
+assertIndexes(['a_1', 'b_1', 'e_1'], 'failed dropIndexes command with non-string index name');
+}());