Add a test case for box.internal.schema_version()

test/box/schema_reload.result

@@ -239,6 +239,21 @@ somefunc = nil
 cn:close()
 ---
 ...
+-- box.internal.schema_version()
+schema_version = box.internal.schema_version()
+---
+...
+schema_version > 0
+---
+- true
+...
+bump_schema_version()
+---
+...
+box.internal.schema_version() == schema_version + 1
+---
+- true
+...
 if box.space.bump_schema_version ~= nil then box.space.bump_schema_version:drop() end
 ---
 ...

test/box/schema_reload.test.lua

@@ -121,6 +121,12 @@ somefunc = nil
 
 cn:close()
 
+-- box.internal.schema_version()
+schema_version = box.internal.schema_version()
+schema_version > 0
+bump_schema_version()
+box.internal.schema_version() == schema_version + 1
+
 if box.space.bump_schema_version ~= nil then box.space.bump_schema_version:drop() end
 
 box.schema.user.revoke('guest', 'read,write,execute', 'universe')