tests: don't emit false failures when sqlite3 is missing

I'm honestly surprised we have buildbot coverage for this, but we do!

Differential Revision: https://phab.mercurial-scm.org/D5150

tests/test-duplicateoptions.py

@@ -8,6 +8,11 b' from mercurial import ('
 
 ignore = {b'highlight', b'win32text', b'factotum', b'beautifygraph'}
 
+try:
+    import sqlite3
+except ImportError:
+    ignore.add(b'sqlitestore')
+
 if os.name != 'nt':
     ignore.add(b'win32mbcs')
 

tests/test-storage.py

@@ -17,9 +17,12 b' from mercurial.testing import ('
     storage as storagetesting,
 )
 
+try:
 from hgext import (
     sqlitestore,
 )
+except ImportError:
+    sqlitestore = None
 
 try:
     from mercurial import zstd
@@ -110,6 +113,7 b' def addrawrevisionsqlite(self, fl, tr, n'
     else:
         raise error.Abort(b'must supply rawtext or delta arguments')
 
+if sqlitestore is not None:
 sqlitefileindextests = storagetesting.makeifileindextests(
     makesqlitefile, maketransaction, addrawrevisionsqlite)
 sqlitefiledatatests = storagetesting.makeifiledatatests(