diff --git a/tests/local.mk b/tests/local.mk
index 47956c232..2b92ec4e5 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -17,7 +17,8 @@ nix_tests = \
   nar-access.sh \
   structured-attrs.sh \
   fetchGit.sh \
-  fetchMercurial.sh
+  fetchMercurial.sh \
+  signing.sh
   # parallel.sh
 
 install-tests += $(foreach x, $(nix_tests), tests/$(x))
diff --git a/tests/signing.sh b/tests/signing.sh
new file mode 100644
index 000000000..c3638012e
--- /dev/null
+++ b/tests/signing.sh
@@ -0,0 +1,62 @@
+source common.sh
+
+clearStore
+clearCache
+
+nix-store --generate-binary-cache-key cache1.example.org $TEST_ROOT/sk1 $TEST_ROOT/pk1
+pk1=$(cat $TEST_ROOT/pk1)
+nix-store --generate-binary-cache-key cache2.example.org $TEST_ROOT/sk2 $TEST_ROOT/pk2
+pk2=$(cat $TEST_ROOT/pk2)
+
+# Build a path.
+outPath=$(nix-build dependencies.nix --no-out-link --secret-key-files "$TEST_ROOT/sk1 $TEST_ROOT/sk2")
+
+# Verify that the path got signed.
+info=$(nix path-info --json $outPath)
+[[ $info =~ '"ultimate":true' ]]
+[[ $info =~ 'cache1.example.org' ]]
+[[ $info =~ 'cache2.example.org' ]]
+
+# Test "nix verify".
+nix verify -r $outPath
+
+expect 2 nix verify -r $outPath --sigs-needed 1
+
+nix verify -r $outPath --sigs-needed 1 --binary-cache-public-keys $pk1
+
+expect 2 nix verify -r $outPath --sigs-needed 2 --binary-cache-public-keys $pk1
+
+nix verify -r $outPath --sigs-needed 2 --binary-cache-public-keys "$pk1 $pk2"
+
+nix verify --all --sigs-needed 2 --binary-cache-public-keys "$pk1 $pk2"
+
+# Build something unsigned.
+outPath2=$(nix-build simple.nix --no-out-link)
+
+nix verify -r $outPath
+
+# Verify that the path did not get signed but does have the ultimate bit.
+info=$(nix path-info --json $outPath2)
+[[ $info =~ '"ultimate":true' ]]
+(! [[ $info =~ 'signatures' ]])
+
+# Test "nix verify".
+nix verify -r $outPath2
+
+expect 2 nix verify -r $outPath2 --sigs-needed 1
+
+expect 2 nix verify -r $outPath2 --sigs-needed 1 --binary-cache-public-keys $pk1
+
+# Test "nix sign-paths".
+nix sign-paths --key-file $TEST_ROOT/sk1 $outPath2
+
+nix verify -r $outPath2 --sigs-needed 1 --binary-cache-public-keys $pk1
+
+# Copy to a binary cache.
+nix copy --to file://$cacheDir $outPath2
+
+# Verify that signatures got copied.
+info=$(nix path-info --store file://$cacheDir --json $outPath2)
+(! [[ $info =~ '"ultimate":true' ]])
+[[ $info =~ 'cache1.example.org' ]]
+(! [[ $info =~ 'cache2.example.org' ]])