--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-sparse-import.t	Sat Jul 01 10:43:29 2017 -0700
@@ -0,0 +1,186 @@
+test sparse
+
+  $ hg init myrepo
+  $ cd myrepo
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > sparse=
+  > purge=
+  > strip=
+  > rebase=
+  > EOF
+
+  $ echo a > index.html
+  $ echo x > data.py
+  $ echo z > readme.txt
+  $ cat > base.sparse <<EOF
+  > [include]
+  > *.sparse
+  > EOF
+  $ hg ci -Aqm 'initial'
+  $ cat > webpage.sparse <<EOF
+  > %include base.sparse
+  > [include]
+  > *.html
+  > EOF
+  $ hg ci -Aqm 'initial'
+
+Import a rules file against a 'blank' sparse profile
+
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > [include]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import
+  $ ls
+  data.py
+
+  $ hg sparse --reset
+  $ rm .hg/sparse
+
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > %include base.sparse
+  > [include]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import
+  $ ls
+  base.sparse
+  data.py
+  webpage.sparse
+
+  $ hg sparse --reset
+  $ rm .hg/sparse
+
+Start against an existing profile; rules *already active* should be ignored
+
+  $ hg sparse --enable-profile webpage.sparse
+  $ hg sparse --include *.py
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > %include base.sparse
+  > [include]
+  > *.html
+  > *.txt
+  > [exclude]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import
+  $ ls
+  base.sparse
+  index.html
+  readme.txt
+  webpage.sparse
+  $ cat .hg/sparse
+  %include webpage.sparse
+  [include]
+  *.py
+  *.txt
+  [exclude]
+  *.py
+
+  $ hg sparse --reset
+  $ rm .hg/sparse
+
+Same tests, with -Tjson enabled to output summaries
+
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > [include]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import -Tjson
+  [
+   {
+    "exclude_rules_added": 0,
+    "files_added": 0,
+    "files_conflicting": 0,
+    "files_dropped": 4,
+    "include_rules_added": 1,
+    "profiles_added": 0
+   }
+  ]
+
+  $ hg sparse --reset
+  $ rm .hg/sparse
+
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > %include base.sparse
+  > [include]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import -Tjson
+  [
+   {
+    "exclude_rules_added": 0,
+    "files_added": 0,
+    "files_conflicting": 0,
+    "files_dropped": 2,
+    "include_rules_added": 1,
+    "profiles_added": 1
+   }
+  ]
+
+  $ hg sparse --reset
+  $ rm .hg/sparse
+
+  $ hg sparse --enable-profile webpage.sparse
+  $ hg sparse --include *.py
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > %include base.sparse
+  > [include]
+  > *.html
+  > *.txt
+  > [exclude]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import -Tjson
+  [
+   {
+    "exclude_rules_added": 1,
+    "files_added": 1,
+    "files_conflicting": 0,
+    "files_dropped": 1,
+    "include_rules_added": 1,
+    "profiles_added": 0
+   }
+  ]
+
+If importing results in no new rules being added, no refresh should take place!
+
+  $ cat > $TESTTMP/trap_sparse_refresh.py <<EOF
+  > from mercurial import error, extensions
+  > def extsetup(ui):
+  >     def abort_refresh(ui, *args):
+  >         raise error.Abort('sparse._refresh called!')
+  >     def sparseloaded(loaded):
+  >         if not loaded:
+  >             return
+  >         sparse = extensions.find('sparse')
+  >         sparse._refresh = abort_refresh
+  >     extensions.afterloaded('sparse', sparseloaded)
+  > EOF
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > trap_sparse_refresh=$TESTTMP/trap_sparse_refresh.py
+  > EOF
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > [include]
+  > *.py
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import
+
+If an exception is raised during refresh, restore the existing rules again.
+
+  $ cat > $TESTTMP/rules_to_import <<EOF
+  > [exclude]
+  > *.html
+  > EOF
+  $ hg sparse --import-rules $TESTTMP/rules_to_import
+  abort: sparse._refresh called!
+  [255]
+  $ cat .hg/sparse
+  %include webpage.sparse
+  [include]
+  *.py
+  *.txt
+  [exclude]
+  *.py