SERVER-18846: Converts DocumentSourceTests into unit tests

1 files changed, 94 insertions, 0 deletions

diff --git a/src/mongo/db/pipeline/document_source_mock.cpp b/src/mongo/db/pipeline/document_source_mock.cpp
new file mode 100644
index 00000000000..6876b0278cf
--- /dev/null
+++ b/src/mongo/db/pipeline/document_source_mock.cpp
@@ -0,0 +1,94 @@
+/**
+ * Copyright 2015 (c) MongoDB, Inc.
+ *
+ * This program is free software: you can redistribute it and/or  modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * 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 GNU Affero General 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/pipeline/document.h"
+#include "mongo/db/pipeline/document_source.h"
+
+namespace mongo {
+
+using boost::intrusive_ptr;
+
+DocumentSourceMock::DocumentSourceMock(std::deque<Document> docs)
+    : DocumentSource(NULL), queue(std::move(docs)) {}
+
+const char* DocumentSourceMock::getSourceName() const {
+    return "mock";
+}
+
+void DocumentSourceMock::setSource(DocumentSource* pSource) {
+    invariant(false);
+}
+
+Value DocumentSourceMock::serialize(bool explain) const {
+    return Value(DOC(getSourceName() << Document()));
+}
+
+void DocumentSourceMock::dispose() {
+    disposed = true;
+}
+
+intrusive_ptr<DocumentSourceMock> DocumentSourceMock::create(std::deque<Document> docs) {
+    return new DocumentSourceMock(std::move(docs));
+}
+
+intrusive_ptr<DocumentSourceMock> DocumentSourceMock::create() {
+    return new DocumentSourceMock(std::deque<Document>());
+}
+
+intrusive_ptr<DocumentSourceMock> DocumentSourceMock::create(const Document& doc) {
+    std::deque<Document> docs = {doc};
+    return new DocumentSourceMock(std::move(docs));
+}
+
+intrusive_ptr<DocumentSourceMock> DocumentSourceMock::create(const char* json) {
+    return create(Document(fromjson(json)));
+}
+
+intrusive_ptr<DocumentSourceMock> DocumentSourceMock::create(
+    const std::initializer_list<const char*>& jsons) {
+    std::deque<Document> docs;
+    for (auto&& json : jsons) {
+        docs.push_back(Document(fromjson(json)));
+    }
+    return new DocumentSourceMock(std::move(docs));
+}
+
+boost::optional<Document> DocumentSourceMock::getNext() {
+    invariant(!disposed);
+
+    if (queue.empty()) {
+        return {};
+    }
+
+    Document doc = std::move(queue.front());
+    queue.pop_front();
+    return {std::move(doc)};
+}
+}