fix(test): add test for install --save

test/11-install-save.js

@@ -0,0 +1,42 @@
+const fs = require('fs')
+const path = require('path')
+const exec = require('child_process').exec
+const tree = require('strong-npm-ls')
+const test = require('tap').test
+const bin = path.join(__dirname, '..', 'bin', 'dep.js')
+const pkg = path.join(__dirname, 'deps/registry')
+const pkgJSON = require(path.join(pkg, 'package.json'))
+
+
+test((t) => {
+  exec(`node ${bin} install --save=prod text-table`, {cwd: pkg}, (err, stdout, stderr) => {
+    t.ifError(err, `${pkgJSON.name}: install ran without error`)
+    tree.read(pkg, (err, out) => {
+      t.ifError(err, `${pkgJSON.name}: tree could be read`)
+      const deps = out.dependencies
+      t.ok(deps['text-table'], `${pkgJSON.name}: deps are installed`)
+      t.end()
+    })
+  })
+})
+
+test((t) => {
+  exec(`node ${bin} install --save=dev quack-array`, {cwd: pkg}, (err, stdout, stderr) => {
+    t.ifError(err, `${pkgJSON.name}: install ran without error`)
+    tree.read(pkg, (err, out) => {
+      t.ifError(err, `${pkgJSON.name}: tree could be read`)
+      const deps = out.devDependencies
+      t.ok(deps['quack-array'], `${pkgJSON.name}: deps are installed`)
+      t.end()
+    })
+  })
+})
+
+
+test((t) => {
+  var data = pkgJSON
+  delete data.dependencies['text-table']
+  delete data.devDependencies
+  fs.writeFileSync(path.join(pkg, 'package.json'), JSON.stringify(data, 2, 2) + '\n')
+  t.end()
+})