1 files changed, 88 insertions, 0 deletions
diff --git a/jstests/core/list_catalog.js b/jstests/core/list_catalog.js
new file mode 100644
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+++ b/jstests/core/list_catalog.js
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+/**
+ * Basic tests for the $listCatalog aggregation stage.
+ *
+ * @tags: [
+ *     # This test creates views and time-series collections, and drops these namespaces
+ *     # as a pre-processing step. We should not allow the test framework to create these
+ *     # namespaces as regular collections.
+ *     assumes_no_implicit_collection_creation_after_drop,
+ *     # Time-series collection inserts are not supported in multi-document transactions.
+ *     does_not_support_transactions,
+ *     requires_fcv_60,
+ *     # $listCatalog result can be large and may be returned in multiple batches.
+ *     requires_getmore,
+ * ]
+ */
+(function() {
+'use strict';
+
+const documentSourceListCatalogEnabled =
+    assert
+        .commandWorked(
+            db.getMongo().adminCommand({getParameter: 1, featureFlagDocumentSourceListCatalog: 1}))
+        .featureFlagDocumentSourceListCatalog.value;
+
+if (!documentSourceListCatalogEnabled) {
+    jsTestLog('Skipping test because the $listCatalog aggregation stage feature flag is disabled.');
+    return;
+}
+
+const collNamePrefix = 'list_catalog_';
+
+// Simple collection with one secondary index.
+const collSimple = db.getCollection(collNamePrefix + 'simple');
+collSimple.drop();
+assert.commandWorked(collSimple.createIndex({a: 1}));
+assert.commandWorked(collSimple.insert({_id: 0, a: 0}));
+
+// Simple view with no pipeline.
+const viewSimple = db.getCollection(collNamePrefix + 'simple_view');
+viewSimple.drop();
+assert.commandWorked(db.createView(viewSimple.getName(), collSimple.getName(), []));
+
+// Time-series collection.
+const collTimeseries = db.getCollection(collNamePrefix + 'ts');
+collTimeseries.drop();
+assert.commandWorked(
+    db.createCollection(collTimeseries.getName(), {timeseries: {timeField: 'tt'}}));
+assert.commandWorked(collTimeseries.insert({_id: 1, tt: ISODate(), x: 123}));
+
+// Collection with clustered index.
+const collClustered = db.getCollection(collNamePrefix + 'clustered');
+collClustered.drop();
+assert.commandWorked(
+    db.createCollection(collClustered.getName(), {clusteredIndex: {key: {_id: 1}, unique: true}}));
+assert.commandWorked(collClustered.insert({_id: 2, y: 'abc'}));
+
+const adminDB = db.getSiblingDB('admin');
+const result = adminDB.aggregate([{$listCatalog: {}}]).toArray();
+jsTestLog('$listCatalog result: ' + tojson(result));
+
+const catalogEntries = Object.assign({}, ...result.map(doc => ({[doc.ns]: doc})));
+jsTestLog('Catalog entries keyed by namespace: ' + tojson(catalogEntries));
+
+const entryCollSimple = catalogEntries[collSimple.getFullName()];
+assert(entryCollSimple, 'simple collection not found: ' + tojson(result));
+assert.eq('collection', entryCollSimple.type, tojson(entryCollSimple));
+const hasIdIndexCollSimple = !entryCollSimple.md.options.clusteredIndex;
+assert.eq(hasIdIndexCollSimple ? 2 : 1, entryCollSimple.md.indexes.length, tojson(entryCollSimple));
+
+const entryViewSimple = catalogEntries[viewSimple.getFullName()];
+assert(entryViewSimple, 'simple view not found: ' + tojson(result));
+assert.eq('view', entryViewSimple.type, tojson(entryViewSimple));
+assert.eq(collSimple.getName(), entryViewSimple.viewOn, tojson(entryViewSimple));
+
+const entryTimeseries = catalogEntries[collTimeseries.getFullName()];
+assert(entryTimeseries, 'time-series collection not found: ' + tojson(result));
+assert.eq('timeseries', entryTimeseries.type, tojson(entryTimeseries));
+const bucketsCollectionName = 'system.buckets.' + collTimeseries.getName();
+assert.eq(bucketsCollectionName, entryTimeseries.viewOn, tojson(entryTimeseries));
+const entryBucketsCollection =
+    catalogEntries[db.getCollection(bucketsCollectionName).getFullName()];
+assert(entryBucketsCollection, 'buckets collection not found: ' + tojson(result));
+
+const entryCollClustered = catalogEntries[collClustered.getFullName()];
+assert(entryCollClustered, 'clustered collection not found: ' + tojson(result));
+assert.eq('collection', entryCollClustered.type, tojson(entryCollClustered));
+assert.sameMembers([], entryCollClustered.md.indexes, tojson(entryCollClustered));
+})();