should be it

external/duckdb/test/extension/install_extension.test_slow

@@ -0,0 +1,111 @@
+# name: test/extension/install_extension.test_slow
+# description: Try loading a shared object with an extension
+# group: [extension]
+
+require notmingw
+
+require skip_reload
+
+statement ok
+PRAGMA enable_verification
+
+# we need a persistent database because otherwise we are not allowed to restart
+load __TEST_DIR__/dummy_database_for_extension_installation.db
+
+statement error
+INSTALL 'asdf';
+----
+
+statement error
+INSTALL 'asdf/asdf.duckdb_extension';
+----
+
+statement ok
+INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+
+statement ok
+FORCE INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+
+statement ok
+LOAD 'loadable_extension_demo';
+
+statement ok
+LOAD 'loadable_extension_demo';
+
+# need to restart to unload extensions
+restart
+
+# this will succeed on MacOS due to case insensitive filesystem
+statement maybe
+FORCE INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_DEMO.duckdb_extension';
+----
+IO Error: Failed to install local extension
+
+statement ok
+FORCE INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+
+statement ok
+LOAD 'Loadable_Extension_DEMO';
+
+# need to restart to unload extensions
+restart
+
+# can't find extension in non-default extension location
+statement ok
+SET extension_directory='__TEST_DIR__/extension_directory'
+
+statement error
+LOAD 'loadable_extension_demo';
+----
+
+# can install after setting directory, even if the extension directory does not yet exist
+statement ok
+INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+
+# can load now
+statement ok
+LOAD 'loadable_extension_demo';
+
+# ensure file is there
+query I
+select count(*) from glob('__TEST_DIR__/extension_directory/**/loadable_extension_demo.duckdb_extension')
+----
+1
+
+# unload again
+restart
+
+
+statement ok
+SET extension_directory=''
+
+# we will use a nonstandard home directory, but we won't create it if it does not exist
+
+# can't find extension in non-default home location
+statement ok
+SET home_directory='__TEST_DIR__/home_directory'
+
+statement error
+LOAD 'loadable_extension_demo';
+----
+
+# we can't install because we will not create a non-existing home directory
+statement error
+INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+----
+
+# but this one should exist
+statement ok
+SET home_directory='__TEST_DIR__'
+
+statement ok
+INSTALL '__BUILD_DIRECTORY__/test/extension/loadable_extension_demo.duckdb_extension';
+
+query I
+select COUNT(*) from glob('__TEST_DIR__/.duckdb/**/loadable_extension_demo.duckdb_extension')
+----
+1
+
+# can load now
+statement ok
+LOAD 'loadable_extension_demo';