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-rw-r--r--tests/fetchMercurial.sh73
-rw-r--r--tests/local.mk3
2 files changed, 75 insertions, 1 deletions
diff --git a/tests/fetchMercurial.sh b/tests/fetchMercurial.sh
new file mode 100644
index 000000000000..5e4782658a81
--- /dev/null
+++ b/tests/fetchMercurial.sh
@@ -0,0 +1,73 @@
+source common.sh
+
+if [[ -z $(type -p hg) ]]; then
+    echo "Mercurial not installed; skipping Mercurial tests"
+    exit 0
+fi
+
+clearStore
+
+repo=$TEST_ROOT/hg
+
+rm -rfv $repo ${repo}-tmp $TEST_HOME/.cache/nix/hg
+
+hg init $repo
+echo '[ui]' >> $repo/.hg/hgrc
+echo 'username = Foobar <foobar@example.org>' >> $repo/.hg/hgrc
+
+echo utrecht > $repo/hello
+hg add --cwd $repo hello
+hg commit --cwd $repo -m 'Bla1'
+rev1=$(hg log --cwd $repo -r tip --template '{node}')
+
+echo world > $repo/hello
+hg commit --cwd $repo -m 'Bla2'
+rev2=$(hg log --cwd $repo -r tip --template '{node}')
+
+hg log --cwd $repo
+
+hg log --cwd $repo -r tip --template '{node}\n'
+
+path=$(nix eval --raw "(builtins.fetchMercurial file://$repo).outPath")
+[[ $(cat $path/hello) = world ]]
+
+# Fetch again. This should be cached.
+mv $repo ${repo}-tmp
+path2=$(nix eval --raw "(builtins.fetchMercurial file://$repo).outPath")
+[[ $path = $path2 ]]
+
+[[ $(nix eval --raw "(builtins.fetchMercurial file://$repo).branch") = default ]]
+[[ $(nix eval "(builtins.fetchMercurial file://$repo).revCount") = 1 ]]
+[[ $(nix eval --raw "(builtins.fetchMercurial file://$repo).rev") = $rev2 ]]
+
+# But with TTL 0, it should fail.
+(! nix eval --tarball-ttl 0 --raw "(builtins.fetchMercurial file://$repo)")
+
+mv ${repo}-tmp $repo
+
+# Using a clean working tree should produce the same result.
+path2=$(nix eval --raw "(builtins.fetchMercurial $repo).outPath")
+[[ $path = $path2 ]]
+
+# Using an unclean tree should yield the tracked but uncommitted changes.
+echo foo > $repo/foo
+echo bar > $repo/bar
+hg add --cwd $repo foo
+hg rm --cwd $repo hello
+
+path2=$(nix eval --raw "(builtins.fetchMercurial $repo).outPath")
+[ ! -e $path2/hello ]
+[ ! -e $path2/bar ]
+[[ $(cat $path2/foo) = foo ]]
+
+[[ $(nix eval --raw "(builtins.fetchMercurial $repo).rev") = 0000000000000000000000000000000000000000 ]]
+
+# ... unless we're using an explicit rev.
+path3=$(nix eval --raw "(builtins.fetchMercurial { url = $repo; rev = \"default\"; }).outPath")
+[[ $path = $path3 ]]
+
+# Committing should not affect the store path.
+hg commit --cwd $repo -m 'Bla3'
+
+path4=$(nix eval --tarball-ttl 0 --raw "(builtins.fetchMercurial file://$repo).outPath")
+[[ $path2 = $path4 ]]
diff --git a/tests/local.mk b/tests/local.mk
index 6160b04c2598..fced281ee5b3 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -15,7 +15,8 @@ nix_tests = \
   linux-sandbox.sh \
   build-remote.sh \
   nar-index.sh \
-  structured-attrs.sh
+  structured-attrs.sh \
+  fetchMercurial.sh
   # parallel.sh
 
 install-tests += $(foreach x, $(nix_tests), tests/$(x))