Add a test for fetchClosure and 'nix store make-content-addressed'

tests/binary-cache.sh

@@ -1,6 +1,6 @@
 source common.sh
 
-needLocalStore "“--no-require-sigs” can’t be used with the daemon"
+needLocalStore "'--no-require-sigs' can’t be used with the daemon"
 
 # We can produce drvs directly into the binary cache
 clearStore

tests/fetchClosure.sh

@@ -0,0 +1,57 @@
+source common.sh
+
+needLocalStore "'--no-require-sigs' can’t be used with the daemon"
+
+clearStore
+clearCacheCache
+
+# Initialize binary cache.
+nonCaPath=$(nix build --json --file ./dependencies.nix | jq -r .[].outputs.out)
+caPath=$(nix store make-content-addressed --json $nonCaPath | jq -r '.rewrites | map(.) | .[]')
+nix copy --to file://$cacheDir $nonCaPath
+
+# Test basic fetchClosure rewriting from non-CA to CA.
+clearStore
+
+[ ! -e $nonCaPath ]
+[ ! -e $caPath ]
+
+[[ $(nix eval -v --raw --expr "
+  builtins.fetchClosure {
+    fromStore = \"file://$cacheDir\";
+    fromPath = $nonCaPath;
+    toPath = $caPath;
+  }
+") = $caPath ]]
+
+[ ! -e $nonCaPath ]
+[ -e $caPath ]
+
+# In impure mode, we can use non-CA paths.
+[[ $(nix eval --raw --no-require-sigs --impure --expr "
+  builtins.fetchClosure {
+    fromStore = \"file://$cacheDir\";
+    fromPath = $nonCaPath;
+  }
+") = $nonCaPath ]]
+
+[ -e $nonCaPath ]
+
+# 'toPath' set to empty string should fail but print the expected path.
+nix eval -v --json --expr "
+  builtins.fetchClosure {
+    fromStore = \"file://$cacheDir\";
+    fromPath = $nonCaPath;
+    toPath = \"\";
+  }
+" 2>&1 | grep "error: rewriting.*$nonCaPath.*yielded.*$caPath"
+
+# If fromPath is CA, then toPath isn't needed.
+nix copy --to file://$cacheDir $caPath
+
+[[ $(nix eval -v --raw --expr "
+  builtins.fetchClosure {
+    fromStore = \"file://$cacheDir\";
+    fromPath = $caPath;
+  }
+") = $caPath ]]

tests/local.mk

@@ -96,7 +96,8 @@ nix_tests = \
   describe-stores.sh \
   nix-profile.sh \
   suggestions.sh \
-  store-ping.sh
+  store-ping.sh \
+  fetchClosure.sh
 
 ifeq ($(HAVE_LIBCPUID), 1)
 	nix_tests += compute-levels.sh