diff --git a/scripts/objc-test-ios.sh b/scripts/objc-test-ios.sh
index 10d0f00a8..48100cc9e 100755
--- a/scripts/objc-test-ios.sh
+++ b/scripts/objc-test-ios.sh
@@ -11,7 +11,7 @@
 # also run the RNTester integration test (needs JS and packager):
 # ./objc-test-ios.sh test
 
-set -ex
+set -e
 
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 ROOT=$(dirname "$SCRIPTS")
@@ -25,6 +25,7 @@ export TEST_NAME="iOS"
 export SCHEME="RNTester"
 export SDK="iphonesimulator"
 export DESTINATION="platform=iOS Simulator,name=${IOS_DEVICE},OS=${IOS_TARGET_OS}"
+export USE_MODERN_BUILD_SYSTEM="NO"
 
 # If there's a "test" argument, pass it to the test script.
 ./scripts/objc-test.sh $1
diff --git a/scripts/objc-test-tvos.sh b/scripts/objc-test-tvos.sh
index e58ac222f..281dd4672 100755
--- a/scripts/objc-test-tvos.sh
+++ b/scripts/objc-test-tvos.sh
@@ -25,6 +25,7 @@ export TEST_NAME="tvOS"
 export SCHEME="RNTester-tvOS"
 export SDK="appletvsimulator"
 export DESTINATION="platform=tvOS Simulator,name=${TVOS_DEVICE},OS=${IOS_TARGET_OS}"
+export USE_MODERN_BUILD_SYSTEM="NO"
 
 # If there's a "test" argument, pass it to the test script.
 ./scripts/objc-test.sh $1
diff --git a/scripts/objc-test.sh b/scripts/objc-test.sh
index 08ef7205e..daa03b7ae 100755
--- a/scripts/objc-test.sh
+++ b/scripts/objc-test.sh
@@ -12,15 +12,11 @@
 # also run the RNTester integration test (needs JS and packager).
 # ./objc-test.sh test
 
-set -ex
-
 SCRIPTS=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
 ROOT=$(dirname "$SCRIPTS")
 
-cd "$ROOT"
-
 # Create cleanup handler
-function cleanup {
+cleanup() {
   EXIT=$?
   set +e
 
@@ -34,14 +30,13 @@ function cleanup {
   # kill whatever is occupying port 5555 (web socket server)
   lsof -i tcp:5555 | awk 'NR!=1 {print $2}' | xargs kill
 }
-trap cleanup EXIT
 
 # Wait for the package to start
-function waitForPackager {
+waitForPackager() {
   local -i max_attempts=60
   local -i attempt_num=1
 
-  until $(curl -s http://localhost:8081/status | grep "packager-status:running" -q); do
+  until curl -s http://localhost:8081/status | grep "packager-status:running" -q; do
     if (( attempt_num == max_attempts )); then
       echo "Packager did not respond in time. No more attempts left."
       exit 1
@@ -55,47 +50,78 @@ function waitForPackager {
   echo "Packager is ready!"
 }
 
-# If first argument is "test", actually start the packager and run tests.
-# Otherwise, just build RNTester for tvOS and exit
+runTests() {
+  xcodebuild \
+    -project "RNTester/RNTester.xcodeproj" \
+    -scheme "$SCHEME" \
+    -sdk "$SDK" \
+    -destination "$DESTINATION" \
+    -UseModernBuildSystem="$USE_MODERN_BUILD_SYSTEM" \
+    build test
+}
 
-if [ "$1" = "test" ]; then
+buildProject() {
+  xcodebuild \
+    -project "RNTester/RNTester.xcodeproj" \
+    -scheme "$SCHEME" \
+    -sdk "$SDK" \
+    -UseModernBuildSystem="$USE_MODERN_BUILD_SYSTEM" \
+    build
+}
 
-# Start the packager
-yarn start --max-workers=1 || echo "Can't start packager automatically" &
-# Start the WebSocket test server
-open "./IntegrationTests/launchWebSocketServer.command" || echo "Can't start web socket server automatically"
+xcprettyFormat() {
+  if [ "$CI" ]; then
+    # Circle CI expects JUnit reports to be available here
+    REPORTS_DIR="$HOME/react-native/reports"
+  else
+    THIS_DIR=$(cd -P "$(dirname "$(readlink "${BASH_SOURCE[0]}" || echo "${BASH_SOURCE[0]}")")" && pwd)
 
-waitForPackager
+    # Write reports to the react-native root dir
+    REPORTS_DIR="$THIS_DIR/../build/reports"
+  fi
 
-# Preload the RNTesterApp bundle for better performance in integration tests
-curl 'http://localhost:8081/RNTester/js/RNTesterApp.ios.bundle?platform=ios&dev=true' -o temp.bundle
-rm temp.bundle
-curl 'http://localhost:8081/RNTester/js/RNTesterApp.ios.bundle?platform=ios&dev=true&minify=false' -o temp.bundle
-rm temp.bundle
-curl 'http://localhost:8081/IntegrationTests/IntegrationTestsApp.bundle?platform=ios&dev=true' -o temp.bundle
-rm temp.bundle
-curl 'http://localhost:8081/IntegrationTests/RCTRootViewIntegrationTestApp.bundle?platform=ios&dev=true' -o temp.bundle
-rm temp.bundle
+  xcpretty --report junit --output "$REPORTS_DIR/junit/$TEST_NAME/results.xml"
+}
 
-# Run tests
-xcodebuild \
-  -project "RNTester/RNTester.xcodeproj" \
-  -scheme "$SCHEME" \
-  -sdk "$SDK" \
-  -destination "$DESTINATION" \
-  -UseModernBuildSystem=NO \
-  build test \
-  | xcpretty --report junit --output "$HOME/react-native/reports/junit/$TEST_NAME/results.xml" \
-  && exit "${PIPESTATUS[0]}"
+preloadBundles() {
+  # Preload the RNTesterApp bundle for better performance in integration tests
+  curl -s 'http://localhost:8081/RNTester/js/RNTesterApp.ios.bundle?platform=ios&dev=true' -o /dev/null
+  curl -s 'http://localhost:8081/RNTester/js/RNTesterApp.ios.bundle?platform=ios&dev=true&minify=false' -o /dev/null
+  curl -s 'http://localhost:8081/IntegrationTests/IntegrationTestsApp.bundle?platform=ios&dev=true' -o /dev/null
+  curl -s 'http://localhost:8081/IntegrationTests/RCTRootViewIntegrationTestApp.bundle?platform=ios&dev=true' -o /dev/null
+}
 
-else
+main() {
+  cd "$ROOT" || exit
 
-# Don't run tests. No need to pass -destination to xcodebuild.
-xcodebuild \
-  -project "RNTester/RNTester.xcodeproj" \
-  -scheme "$SCHEME" \
-  -sdk "$SDK" \
-  -UseModernBuildSystem=NO \
-  build
+  # If first argument is "test", actually start the packager and run tests.
+  # Otherwise, just build RNTester and exit
+  if [ "$1" = "test" ]; then
 
-fi
+    # Start the packager
+    yarn start --max-workers=1 || echo "Can't start packager automatically" &
+    # Start the WebSocket test server
+    open "./IntegrationTests/launchWebSocketServer.command" || echo "Can't start web socket server automatically"
+
+    waitForPackager
+    preloadBundles
+
+    # Build and run tests.
+    if [ -x "$(command -v xcpretty)" ]; then
+      runTests | xcprettyFormat && exit "${PIPESTATUS[0]}"
+    else
+      echo 'Warning: xcpretty is not installed. Install xcpretty to generate JUnit reports.'
+      runTests
+    fi
+  else
+    # Build without running tests.
+    if [ -x "$(command -v xcpretty)" ]; then
+      buildProject | xcprettyFormat && exit "${PIPESTATUS[0]}"
+    else
+      buildProject
+    fi
+  fi
+}
+
+trap cleanup EXIT
+main "$@"