SERVER-25301 Test views with legacy reads/writes

1 files changed, 42 insertions, 0 deletions

diff --git a/jstests/views/views_legacy.js b/jstests/views/views_legacy.js
new file mode 100644
index 00000000000..46154fbdc30
--- /dev/null
+++ b/jstests/views/views_legacy.js
@@ -0,0 +1,42 @@
+/**
+ * Tests that views properly reject queries in legacy read mode, and reject writes performed in
+ * legacy write mode.
+ *
+ * TODO(SERVER-25641): If the views test suite is moved under core, we can get rid of this test
+ * after ensuring that it is included in a legacy passthrough suite.
+ */
+(function() {
+    "use strict";
+
+    let conn = MongoRunner.runMongod({setParameter: "enableViews=1"});
+
+    let viewsDB = conn.getDB("views_legacy");
+    assert.commandWorked(viewsDB.dropDatabase());
+    assert.commandWorked(viewsDB.createView("view", "collection", []));
+
+    // Helper function for performing getLastError.
+    function assertGetLastErrorFailed() {
+        let gle = viewsDB.runCommand({getLastError: 1});
+        assert.commandWorked(gle);
+        assert.eq(gle.code, ErrorCodes.CommandNotSupportedOnView, tojson(gle));
+    }
+
+    // A view should reject all write CRUD operations performed in legacy write mode.
+    conn.forceWriteMode("legacy");
+
+    viewsDB.view.insert({x: 1});
+    assertGetLastErrorFailed();
+
+    viewsDB.view.remove({x: 1});
+    assertGetLastErrorFailed();
+
+    viewsDB.view.update({x: 1}, {x: 2});
+    assertGetLastErrorFailed();
+
+    // Legacy find is explicitly prohibited on views; you must use the find command.
+    conn.forceReadMode("legacy");
+    let res = assert.throws(function() {
+        viewsDB.view.find({x: 1}).toArray();
+    });
+    assert.eq(res.code, ErrorCodes.CommandNotSupportedOnView, tojson(res));
+}());