1 files changed, 95 insertions, 0 deletions
diff --git a/src/mongo/db/pipeline/document_source_telemetry_test.cpp b/src/mongo/db/pipeline/document_source_telemetry_test.cpp
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+++ b/src/mongo/db/pipeline/document_source_telemetry_test.cpp
@@ -0,0 +1,95 @@
+/**
+ *    Copyright (C) 2022-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the Server Side Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/exec/document_value/document.h"
+#include "mongo/db/exec/document_value/document_value_test_util.h"
+#include "mongo/db/pipeline/aggregation_context_fixture.h"
+#include "mongo/db/pipeline/document_source_telemetry.h"
+#include "mongo/unittest/unittest.h"
+#include "mongo/util/assert_util.h"
+#include "mongo/util/str.h"
+
+namespace mongo {
+namespace {
+
+/**
+ * Subclass AggregationContextFixture to set the ExpressionContext's namespace to 'admin' with
+ * {aggregate: 1} by default, so that parsing tests other than those which validate the namespace do
+ * not need to explicitly set it.
+ */
+class DocumentSourceTelemetryTest : public AggregationContextFixture {
+public:
+    DocumentSourceTelemetryTest()
+        : AggregationContextFixture(
+              NamespaceString::makeCollectionlessAggregateNSS(DatabaseName::kAdmin)) {}
+};
+
+TEST_F(DocumentSourceTelemetryTest, ShouldFailToParseIfSpecIsNotObject) {
+    ASSERT_THROWS_CODE(DocumentSourceTelemetry::createFromBson(
+                           fromjson("{$telemetry: 1}").firstElement(), getExpCtx()),
+                       AssertionException,
+                       ErrorCodes::FailedToParse);
+}
+
+TEST_F(DocumentSourceTelemetryTest, ShouldFailToParseIfNotRunOnAdmin) {
+    getExpCtx()->ns = NamespaceString::makeCollectionlessAggregateNSS(
+        DatabaseName::createDatabaseName_forTest(boost::none, "foo"));
+    ASSERT_THROWS_CODE(DocumentSourceTelemetry::createFromBson(
+                           fromjson("{$telemetry: {}}").firstElement(), getExpCtx()),
+                       AssertionException,
+                       ErrorCodes::InvalidNamespace);
+}
+
+TEST_F(DocumentSourceTelemetryTest, ShouldFailToParseIfNotRunWithAggregateOne) {
+    getExpCtx()->ns = NamespaceString::createNamespaceString_forTest("admin.foo");
+    ASSERT_THROWS_CODE(DocumentSourceTelemetry::createFromBson(
+                           fromjson("{$telemetry: {}}").firstElement(), getExpCtx()),
+                       AssertionException,
+                       ErrorCodes::InvalidNamespace);
+}
+
+TEST_F(DocumentSourceTelemetryTest, ShouldFailToParseIfUnrecognisedParameterSpecified) {
+    ASSERT_THROWS_CODE(DocumentSourceTelemetry::createFromBson(
+                           fromjson("{$telemetry: {foo: true}}").firstElement(), getExpCtx()),
+                       AssertionException,
+                       ErrorCodes::FailedToParse);
+}
+
+TEST_F(DocumentSourceTelemetryTest, ParseAndSerialize) {
+    auto obj = fromjson("{$telemetry: {}}");
+    auto doc = DocumentSourceTelemetry::createFromBson(obj.firstElement(), getExpCtx());
+    auto telemetryOp = static_cast<DocumentSourceTelemetry*>(doc.get());
+    auto expected = Document{{"$telemetry", Document{}}};
+    ASSERT_DOCUMENT_EQ(telemetryOp->serialize().getDocument(), expected);
+}
+
+}  // namespace
+}  // namespace mongo