--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-imports-checker.t	Tue Mar 14 23:07:08 2017 -0700
@@ -0,0 +1,146 @@
+#require test-repo
+
+  $ . "$TESTDIR/helpers-testrepo.sh"
+  $ import_checker="$TESTDIR"/../contrib/import-checker.py
+
+Run the doctests from the import checker, and make sure
+it's working correctly.
+  $ TERM=dumb
+  $ export TERM
+  $ python -m doctest $import_checker
+
+Run additional tests for the import checker
+
+  $ mkdir testpackage
+  $ touch testpackage/__init__.py
+
+  $ cat > testpackage/multiple.py << EOF
+  > from __future__ import absolute_import
+  > import os, sys
+  > EOF
+
+  $ cat > testpackage/unsorted.py << EOF
+  > from __future__ import absolute_import
+  > import sys
+  > import os
+  > EOF
+
+  $ cat > testpackage/stdafterlocal.py << EOF
+  > from __future__ import absolute_import
+  > from . import unsorted
+  > import os
+  > EOF
+
+  $ cat > testpackage/requirerelative.py << EOF
+  > from __future__ import absolute_import
+  > import testpackage.unsorted
+  > EOF
+
+  $ cat > testpackage/importalias.py << EOF
+  > from __future__ import absolute_import
+  > import ui
+  > EOF
+
+  $ cat > testpackage/relativestdlib.py << EOF
+  > from __future__ import absolute_import
+  > from .. import os
+  > EOF
+
+  $ cat > testpackage/symbolimport.py << EOF
+  > from __future__ import absolute_import
+  > from .unsorted import foo
+  > EOF
+
+  $ cat > testpackage/latesymbolimport.py << EOF
+  > from __future__ import absolute_import
+  > from . import unsorted
+  > from mercurial.node import hex
+  > EOF
+
+  $ cat > testpackage/multiplegroups.py << EOF
+  > from __future__ import absolute_import
+  > from . import unsorted
+  > from . import more
+  > EOF
+
+  $ mkdir testpackage/subpackage
+  $ cat > testpackage/subpackage/levelpriority.py << EOF
+  > from __future__ import absolute_import
+  > from . import foo
+  > from .. import parent
+  > EOF
+
+  $ touch testpackage/subpackage/foo.py
+  $ cat > testpackage/subpackage/__init__.py << EOF
+  > from __future__ import absolute_import
+  > from . import levelpriority  # should not cause cycle
+  > EOF
+
+  $ cat > testpackage/subpackage/localimport.py << EOF
+  > from __future__ import absolute_import
+  > from . import foo
+  > def bar():
+  >     # should not cause "higher-level import should come first"
+  >     from .. import unsorted
+  >     # but other errors should be detected
+  >     from .. import more
+  >     import testpackage.subpackage.levelpriority
+  > EOF
+
+  $ cat > testpackage/importmodulefromsub.py << EOF
+  > from __future__ import absolute_import
+  > from .subpackage import foo  # not a "direct symbol import"
+  > EOF
+
+  $ cat > testpackage/importsymbolfromsub.py << EOF
+  > from __future__ import absolute_import
+  > from .subpackage import foo, nonmodule
+  > EOF
+
+  $ cat > testpackage/sortedentries.py << EOF
+  > from __future__ import absolute_import
+  > from . import (
+  >     foo,
+  >     bar,
+  > )
+  > EOF
+
+  $ cat > testpackage/importfromalias.py << EOF
+  > from __future__ import absolute_import
+  > from . import ui
+  > EOF
+
+  $ cat > testpackage/importfromrelative.py << EOF
+  > from __future__ import absolute_import
+  > from testpackage.unsorted import foo
+  > EOF
+
+  $ mkdir testpackage2
+  $ touch testpackage2/__init__.py
+
+  $ cat > testpackage2/latesymbolimport.py << EOF
+  > from __future__ import absolute_import
+  > from testpackage import unsorted
+  > from mercurial.node import hex
+  > EOF
+
+  $ python "$import_checker" testpackage*/*.py testpackage/subpackage/*.py
+  testpackage/importalias.py:2: ui module must be "as" aliased to uimod
+  testpackage/importfromalias.py:2: ui from testpackage must be "as" aliased to uimod
+  testpackage/importfromrelative.py:2: import should be relative: testpackage.unsorted
+  testpackage/importfromrelative.py:2: direct symbol import foo from testpackage.unsorted
+  testpackage/importsymbolfromsub.py:2: direct symbol import nonmodule from testpackage.subpackage
+  testpackage/latesymbolimport.py:3: symbol import follows non-symbol import: mercurial.node
+  testpackage/multiple.py:2: multiple imported names: os, sys
+  testpackage/multiplegroups.py:3: multiple "from . import" statements
+  testpackage/relativestdlib.py:2: relative import of stdlib module
+  testpackage/requirerelative.py:2: import should be relative: testpackage.unsorted
+  testpackage/sortedentries.py:2: imports from testpackage not lexically sorted: bar < foo
+  testpackage/stdafterlocal.py:3: stdlib import "os" follows local import: testpackage
+  testpackage/subpackage/levelpriority.py:3: higher-level import should come first: testpackage
+  testpackage/subpackage/localimport.py:7: multiple "from .. import" statements
+  testpackage/subpackage/localimport.py:8: import should be relative: testpackage.subpackage.levelpriority
+  testpackage/symbolimport.py:2: direct symbol import foo from testpackage.unsorted
+  testpackage/unsorted.py:3: imports not lexically sorted: os < sys
+  testpackage2/latesymbolimport.py:3: symbol import follows non-symbol import: mercurial.node
+  [1]