fix: remove unused npm.setCmd method

lib/npm.js

@@ -77,7 +77,8 @@ class Npm {
     return this.constructor.version
   }
 
-  setCmd (cmd) {
+  // Call an npm command
+  async exec (cmd, args = this.argv) {
     const Command = Npm.cmd(cmd)
     const command = new Command(this)
 
@@ -88,12 +89,6 @@ class Npm {
       process.env.npm_command = this.command
     }
 
-    return command
-  }
-
-  // Call an npm command
-  async exec (cmd, args = this.argv) {
-    const command = this.setCmd(cmd)
     return time.start(`command:${cmd}`, () => command.cmdExec(args))
   }
 

test/fixtures/mock-npm.js

@@ -120,7 +120,6 @@ const setupMockNpm = async (t, {
   // preload a command
   command = null, // string name of the command
   exec = null, // optionally exec the command before returning
-  setCmd = false,
   // test dirs
   prefixDir = {},
   homeDir = {},
@@ -267,16 +266,6 @@ const setupMockNpm = async (t, {
   const mockCommand = {}
   if (command) {
     const Cmd = mockNpm.Npm.cmd(command)
-    if (setCmd) {
-      // XXX(hack): This is a hack to allow fake-ish tests to set the currently
-      // running npm command without running exec. Generally, we should rely on
-      // actually exec-ing the command to asserting the state of the world
-      // through what is printed/on disk/etc. This is a stop-gap to allow tests
-      // that are time intensive to convert to continue setting the npm command
-      // this way. TODO: remove setCmd from all tests and remove the setCmd
-      // method from `lib/npm.js`
-      npm.setCmd(command)
-    }
     mockCommand.cmd = new Cmd(npm)
     mockCommand[command] = {
       usage: Cmd.describeUsage,

test/lib/utils/reify-output.js

@@ -8,7 +8,18 @@ const mockReify = async (t, reify, { command, ...config } = {}) => {
   const mock = await mockNpm(t, {
     command,
     config,
-    setCmd: true,
+  })
+
+  // Hack to adapt existing fake test. Make npm.command
+  // return whatever was passed in to this function.
+  // What it should be doing is npm.exec(command) but that
+  // breaks most of these tests because they dont expect
+  // a command to actually run.
+  Object.defineProperty(mock.npm, 'command', {
+    get () {
+      return command
+    },
+    enumerable: true,
   })
 
   reifyOutput(mock.npm, reify)