npm install from cache fails with shrinkwrap when network is down

doit.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# tested on Ubuntu 12.04
+# usage: 
+# ./doit.sh
+#   npm install from cache with shrinkwrap fails when networking is disabled
+# ./doit.sh noshrinkwrap 
+#   npm install from cache without shrinkwrap works when networking is disabled
+
+
+curl http://nodejs.org/dist/v0.10.28/node-v0.10.28-linux-x64.tar.gz | tar xvz
+TPATH="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+export PATH="${TPATH}/node-v0.10.28-linux-x64/bin:${NUCLEUS_HOME}/node_modules/.bin:$PATH"
+
+# i == 1: populate cache, disable networking
+# i == 2: try npm install with prefilled cache and NPM_CONFIG_CACHE-MIN=999999
+# i == 3: try npm install with prefilled cache and NPM_CONFIG_REGISTRY=""
+# i == 4: try npm install with prefilled cache and NPM_CONFIG_REGISTRY=null
+# then enables networking back
+for i in $(seq 1 4);
+do
+  echo "test =-= ${i}"
+  NPM_CACHE=${TPATH}/npm_cache${i}
+  rm -rf ${NPM_CACHE}
+
+  # first iteration constructs npm cache, next iterations copy it
+  if [ $i != 1 ]; then
+    cp -a ${TPATH}/npm_cache1 ${NPM_CACHE}
+  fi
+
+  rm -rf test${i}
+  mkdir -p test${i}
+  cp package.json test${i}
+  if [ "$1" != "noshrinkwrap" ]; then
+    echo "cp npm-shrinkwrap.json test${i}"
+    cp npm-shrinkwrap.json test${i}
+  fi
+  cd test${i}
+
+  if [ "$i" == "1" ]; then
+    E="NPM_CONFIG_CACHE=${NPM_CACHE}"
+    E2="NPM_CONFIG_CACHE=${NPM_CACHE}"
+  elif [ "$i" == "2" ]; then
+    E="NPM_CONFIG_CACHE-MIN=999999" 
+    E2="NPM_CONFIG_CACHE=${NPM_CACHE}"
+  elif [ "$i" == "3" ]; then
+    E="NPM_CONFIG_REGISTRY=\"\""
+    E2="NPM_CONFIG_CACHE=${NPM_CACHE}"
+  elif [ "$i" == "4" ]; then
+    E="NPM_CONFIG_REGISTRY=null"
+    E2="NPM_CONFIG_CACHE=${NPM_CACHE}"
+  fi
+
+  time env "${E}" "${E2}" npm config ls -l 2>&1 |tee out.log
+  time env "${E}" "${E2}" npm install  2>&1 |tee -a out.log
+
+  cd ..
+
+  # turn networking off after the first iteration
+  if [ "$i" == "1" ]; then
+    sudo  ifconfig eth0 down
+    sleep 20;
+  fi
+done
+# turn networking back on
+sudo  ifconfig eth0 up

package.json

@@ -0,0 +1,8 @@
+{
+  "name": "npm_offline_test",
+  "version": "0.0.1",
+  "description": "npm_offline_test",
+  "dependencies": {
+    "mkdirp": "0.5.0"
+  }
+}