From bdd7324d62208ef37be0b192f9e71b1ffe6ad06a Mon Sep 17 00:00:00 2001
From: Mikhail Pozdnyakov <mikhail.pozdnyakov@mapbox.com>
Date: Fri, 7 Feb 2020 12:57:28 +0200
Subject: Add OfflineDatabase.UpdateDatabaseReadOnlyMode unit test

---
 test/storage/offline_database.test.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/test/storage/offline_database.test.cpp b/test/storage/offline_database.test.cpp
index a0b780a4ea..f988457dac 100644
--- a/test/storage/offline_database.test.cpp
+++ b/test/storage/offline_database.test.cpp
@@ -1902,3 +1902,19 @@ TEST(OfflineDatabase, PutResourceReadOnlyMode) {
 
     EXPECT_EQ(0u, log.uncheckedCount());
 }
+
+TEST(OfflineDatabase, TEST_REQUIRES_WRITE(UpdateDatabaseReadOnlyMode)) {
+    FixtureLog log;
+    deleteDatabaseFiles();
+
+    OfflineDatabase db(filename);
+    db.reopenDatabaseReadOnly(true /*readOnly*/);
+    db.clearAmbientCache();
+    EXPECT_EQ(1u,
+              log.count({EventSeverity::Error,
+                         Event::Database,
+                         -1,
+                         "Can't clear ambient cache: Cannot modify database in read-only mode"}));
+
+    EXPECT_EQ(0u, log.uncheckedCount());
+}
-- 
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