test: try setting the cache

Author: G-Rath

workspaces/arborist/test/arborist/pruner.js

@@ -24,8 +24,13 @@ const pruneTree = (path, opt) => new Arborist({ path, ...(opt || {}) }).prune(op
 
 t.test('prune with lockfile with implicit optional peer dependencies', async t => {
   registry.audit({})
+  const opts = {}
+
+  if (process.platform === 'win32') {
+    opts['cache'] = 'C:\\npm\\cache\\_cacache'
+  }
   const path = fixture(t, 'prune-lockfile-optional-peer')
-  const tree = await pruneTree(path)
+  const tree = await pruneTree(path, opts)
 
   const dep = tree.children.get('dedent')
   t.ok(dep, 'required prod dep was pruned from tree')