fix: Exit when both --e2e and --component flags are passed in

cli/__snapshots__/errors_spec.js

@@ -26,29 +26,6 @@ Platform: test platform (Foo-OsVersion)
 Cypress Version: 1.2.3
 `
 
-exports['errors individual has the following errors 1'] = [
-  "CYPRESS_RUN_BINARY",
-  "binaryNotExecutable",
-  "childProcessKilled",
-  "failedDownload",
-  "failedUnzip",
-  "incompatibleHeadlessFlags",
-  "invalidCacheDirectory",
-  "invalidCypressEnv",
-  "invalidRunProjectPath",
-  "invalidSmokeTestDisplayError",
-  "invalidTestingType",
-  "missingApp",
-  "missingDependency",
-  "missingXvfb",
-  "nonZeroExitCodeXvfb",
-  "notInstalledCI",
-  "smokeTestFailure",
-  "unexpected",
-  "unknownError",
-  "versionMismatch"
-]
-
 exports['invalid display error'] = `
 Cypress verification failed.
 
@@ -95,3 +72,28 @@ Consider opening a new issue.
 Platform: test platform (Foo-OsVersion)
 Cypress Version: 1.2.3
 `
+
+exports['errors individual has the following errors 1'] = [
+  "CYPRESS_RUN_BINARY",
+  "binaryNotExecutable",
+  "childProcessKilled",
+  "failedDownload",
+  "failedUnzip",
+  "incompatibleHeadlessFlags",
+  "incompatibleTestTypeFlags",
+  "incompatibleTestingTypeAndFlag",
+  "invalidCacheDirectory",
+  "invalidCypressEnv",
+  "invalidRunProjectPath",
+  "invalidSmokeTestDisplayError",
+  "invalidTestingType",
+  "missingApp",
+  "missingDependency",
+  "missingXvfb",
+  "nonZeroExitCodeXvfb",
+  "notInstalledCI",
+  "smokeTestFailure",
+  "unexpected",
+  "unknownError",
+  "versionMismatch"
+]

cli/lib/errors.js

@@ -73,7 +73,7 @@ const binaryNotExecutable = (executable) => {
 
     Please check that you have the appropriate user permissions.
 
-    You can also try clearing the cache with 'cypress cache clear' and reinstalling. 
+    You can also try clearing the cache with 'cypress cache clear' and reinstalling.
   `,
   }
 }
@@ -213,6 +213,16 @@ const invalidTestingType = {
   solution: `Please provide a valid testingType. Valid test types are ${chalk.cyan('\'e2e\'')} and ${chalk.cyan('\'component\'')}.`,
 }
 
+const incompatibleTestTypeFlags = {
+  description: '`--e2e` and `--component` cannot both be passed.',
+  solution: 'Either pass `--e2e` or `--component`, but not both.',
+}
+
+const incompatibleTestingTypeAndFlag = {
+  description: 'Set a `testingType` and also passed `--e2e` or `--component` flags.',
+  solution: 'Either set `testingType` or pass a testing type flag, but not both.',
+}
+
 /**
  * This error happens when CLI detects that the child Test Runner process
  * was killed with a signal, like SIGBUS
@@ -404,5 +414,7 @@ module.exports = {
     incompatibleHeadlessFlags,
     invalidRunProjectPath,
     invalidTestingType,
+    incompatibleTestTypeFlags,
+    incompatibleTestingTypeAndFlag,
   },
 }

cli/lib/exec/shared.js

@@ -24,6 +24,14 @@ const throwInvalidOptionError = (details) => {
  * @returns {string[]} The array of new exec arguments
  */
 const processTestingType = (options) => {
+  if (options.e2e && options.component) {
+    return throwInvalidOptionError(errors.incompatibleTestTypeFlags)
+  }
+
+  if (options.testingType && (options.component || options.e2e)) {
+    return throwInvalidOptionError(errors.incompatibleTestTypeFlags)
+  }
+
   if (options.testingType === 'component' || options.component || options.ct) {
     return ['--testing-type', 'component']
   }

cli/test/lib/exec/run_spec.js

@@ -104,6 +104,14 @@ describe('exec run', function () {
     it('throws if testingType is invalid', () => {
       expect(() => run.processRunOptions({ testingType: 'randomTestingType' })).to.throw()
     })
+
+    it('throws if both e2e and component are set', () => {
+      expect(() => run.processRunOptions({ e2e: true, component: true })).to.throw()
+    })
+
+    it('throws if both testingType and component are set', () => {
+      expect(() => run.processRunOptions({ testingType: 'component', component: true })).to.throw()
+    })
   })
 
   context('.start', function () {