Allow passing a list of space-separated specs to --spec (#3375)

* cli: add otherSpecs for varargs [wip]

* scripts: pass command-line args through to debugged command

* cli: parse space-delimited specs

* cli: undo unneeded

* cli: cleaned up parseVariableOpts, added warning

* cli: cleanup

* cli: add tests

* cli: glorious whitespace

* cli: a more robust test

* cli: better snapshot

* server: strip single-quotes around --spec arg

#2298

cli/test/lib/cli_spec.js

@@ -228,15 +228,29 @@ describe('cli', () => {
       expect(run.start).to.be.calledWith({ parallel: true })
     })
 
-    it('calls runs with --ci-build-id', () => {
+    it('calls run with --ci-build-id', () => {
       this.exec('run --ci-build-id 123')
       expect(run.start).to.be.calledWith({ ciBuildId: '123' })
     })
 
-    it('calls runs with --group', () => {
+    it('calls run with --group', () => {
       this.exec('run --group staging')
       expect(run.start).to.be.calledWith({ group: 'staging' })
     })
+
+    it('calls run with space-separated --specs', () => {
+      this.exec('run --spec a b c d e f g')
+      expect(run.start).to.be.calledWith({ spec: 'a,b,c,d,e,f,g' })
+      this.exec('run --dev bang --spec foo bar baz -P ./')
+      expect(run.start).to.be.calledWithMatch({ spec: 'foo,bar,baz' })
+    })
+
+    it('warns with space-separated --specs', (done) => {
+      sinon.spy(logger, 'warn')
+      this.exec('run --spec a b c d e f g --dev')
+      snapshot(logger.warn.getCall(0).args[0])
+      done()
+    })
   })
 
   context('cypress open', () => {

cli/test/lib/exec/run_spec.js

@@ -18,6 +18,7 @@ describe('exec run', function () {
       const args = run.processRunOptions({
         browser: 'test browser',
       })
+
       snapshot(args)
     })
 
@@ -25,6 +26,7 @@ describe('exec run', function () {
       const args = run.processRunOptions({
         record: 'my record id',
       })
+
       snapshot(args)
     })
 
@@ -33,6 +35,7 @@ describe('exec run', function () {
         record: 'foo',
         browser: 'test browser',
       })
+
       snapshot(args)
     })
   })