1 files changed, 67 insertions, 0 deletions
diff --git a/tests/functional/build-dry.sh b/tests/functional/build-dry.sh
new file mode 100644
index 000000000..6d1754af5
--- /dev/null
+++ b/tests/functional/build-dry.sh
@@ -0,0 +1,67 @@
+source common.sh
+
+###################################################
+# Check that --dry-run isn't confused with read-only mode
+# https://github.com/NixOS/nix/issues/1795
+
+clearStore
+clearCache
+
+# Ensure this builds successfully first
+nix build --no-link -f dependencies.nix
+
+clearStore
+clearCache
+
+# Try --dry-run using old command first
+nix-build --no-out-link dependencies.nix --dry-run 2>&1 | grep "will be built"
+# Now new command:
+nix build -f dependencies.nix --dry-run 2>&1 | grep "will be built"
+
+clearStore
+clearCache
+
+# Try --dry-run using new command first
+nix build -f dependencies.nix --dry-run 2>&1 | grep "will be built"
+# Now old command:
+nix-build --no-out-link dependencies.nix --dry-run 2>&1 | grep "will be built"
+
+###################################################
+# Check --dry-run doesn't create links with --dry-run
+# https://github.com/NixOS/nix/issues/1849
+clearStore
+clearCache
+
+RESULT=$TEST_ROOT/result-link
+rm -f $RESULT
+
+nix-build dependencies.nix -o $RESULT --dry-run
+
+[[ ! -h $RESULT ]] || fail "nix-build --dry-run created output link"
+
+nix build -f dependencies.nix -o $RESULT --dry-run
+
+[[ ! -h $RESULT ]] || fail "nix build --dry-run created output link"
+
+nix build -f dependencies.nix -o $RESULT
+
+[[ -h $RESULT ]]
+
+###################################################
+# Check the JSON output
+clearStore
+clearCache
+
+RES=$(nix build -f dependencies.nix --dry-run --json)
+
+if [[ -z "${NIX_TESTS_CA_BY_DEFAULT-}" ]]; then
+    echo "$RES" | jq '.[0] | [
+        (.drvPath | test("'$NIX_STORE_DIR'.*\\.drv")),
+        (.outputs.out | test("'$NIX_STORE_DIR'"))
+    ] | all'
+else
+    echo "$RES" | jq '.[0] | [
+        (.drvPath | test("'$NIX_STORE_DIR'.*\\.drv")),
+        .outputs.out == null
+    ] | all'
+fi