ios e2e debug on CI

scripts/test.e2e.ios.js

 
 function buildProjForDetox() {
   const scheme = release ? `playground_release` : `playground`;
+  const conf = release ? `Release` : `Debug`;
 
   const cmd = `RCT_NO_LAUNCH_PACKAGER=true
             cd ./playground/ios && xcodebuild
+            build
             -scheme ${scheme}
-            ${release ? 'clean build' : 'build'}
             -project playground.xcodeproj
             -sdk iphonesimulator
+            -configuration ${conf}
             -derivedDataPath ./DerivedData/playground`;
 
   if (exec.which(`xcpretty`)) {
   }
 }
 
-function e2e() { //eslint-disable-line
-  try {
-    exec.execSyncSilent(`watchman watch-del-all || true`);
-    const detoxAppBuildPath = `playground/ios/DerivedData/playground/Build/Products/${release ? 'Release' : 'Debug'}-iphonesimulator/playground.app`;
+function runDetoxUsingMocha() {
+  const detoxAppBuildPath = `playground/ios/DerivedData/playground/Build/Products/${release ? 'Release' : 'Debug'}-iphonesimulator/playground.app`;
 
-    exec.execSync(`detoxAppBuildPath="${detoxAppBuildPath}"
+  exec.execSync(`detoxAppBuildPath="${detoxAppBuildPath}"
                               BABEL_ENV=test
                               ./node_modules/mocha/bin/mocha e2e
                                 --timeout ${2 * 60 * 1000}
                                 --recursive
                                 --bail`);
+}
+
+function e2e() { //eslint-disable-line
+  try {
+    if (process.env.CI) {
+      exec.exec(`yarn run start`);
+      exec.execSync(`sleep 5`);
+    }
+    runDetoxUsingMocha();
   } finally {
     if (process.env.CI) {
+      exec.kill(`react-native/local-cli/cli.js start`);
       exec.kill(`Simulator`);
       exec.kill(`CoreSimulator`);
       exec.execSync(`sleep 5`);

scripts/test.unit.ios.js

             -scheme "playground"
             -project playground.xcodeproj
             -sdk iphonesimulator
-            -configuration Debug`);
+            -configuration Debug
+            -derivedDataPath ./DerivedData/playground`);
   runWithXcpretty(`RCT_NO_LAUNCH_PACKAGER=true
           cd ./playground/ios && xcodebuild
             test-without-building
             -scheme "playground"
             -project playground.xcodeproj
-            -destination 'platform=iOS Simulator,name=iPhone 7'`);
+            -sdk iphonesimulator
+            -destination 'platform=iOS Simulator,name=iPhone 7'
+            -derivedDataPath ./DerivedData/playground`);
 }
 
 run();

scripts/travis.sh

 run_f "yarn run test-unit-android"
 run_f "yarn run test-unit-ios"
 run_f "yarn run test-e2e-android"
-run_f "yarn run test-e2e-ios -- release"
+run_f "yarn run test-e2e-ios"
 run_f "yarn run release"