Use :rfc1034identifier modifier to remove '_' in BUNDLE_ID_TEST_NAME.

testing/gtest_ios/unittest-Info.plist

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
         <key>CFBundleDevelopmentRegion</key>
         <string>English</string>
         <key>CFBundleDisplayName</key>
         <string>${PRODUCT_NAME}</string>
         <key>CFBundleExecutable</key>
         <string>${EXECUTABLE_NAME}</string>
         <key>CFBundleIdentifier</key>
-        <string>com.google.gtest.${BUNDLE_ID_TEST_NAME}</string>
+        <string>com.google.gtest.${BUNDLE_ID_TEST_NAME:rfc1034identifier}</string>
         <key>CFBundleInfoDictionaryVersion</key>
         <string>6.0</string>
         <key>CFBundleName</key>
         <string>${PRODUCT_NAME}</string>
         <key>CFBundlePackageType</key>
         <string>APPL</string>
         <key>CFBundleSignature</key>
         <string>????</string>
         <key>CFBundleVersion</key>
         <string>1.0</string>
@@ skipping 27 matching lines @@
                 <string>gplus-v3</string>
                 <string>gplus</string>
                 <string>vnd.google.calendar</string>
                 <string>vnd.youtube</string>
                 <string>youtube</string>
         </array>
         <key>LSRequiresIPhoneOS</key>
         <true/>
         <key>NSAppTransportSecurity</key>
         <dict>
-               <key>NSAllowsArbitraryLoads</key>
-               <true/>
+        <key>NSAllowsArbitraryLoads</key>
+        <true/>
         </dict>
         <key>NSMainNibFile</key>
         <string>${MAIN_NIB_FILE}</string>
         <key>UIFileSharingEnabled</key>
         <true/>
         <key>UILaunchImages</key>
         <array>
                 <dict>
                         <key>UILaunchImageMinimumOSVersion</key>
                         <string>7.0</string>
@@ skipping 72 matching lines @@
         <array>
                 <string>UIInterfaceOrientationPortrait</string>
                 <string>UIInterfaceOrientationLandscapeLeft</string>
                 <string>UIInterfaceOrientationLandscapeRight</string>
         </array>
         <key>CFBundleURLTypes</key>
         <array>
                 <dict>
                         <key>CFBundleURLSchemes</key>
                         <array>
-                                <string>${BUNDLE_ID_TEST_NAME}.http</string>
-                                <string>${BUNDLE_ID_TEST_NAME}.https</string>
-                                <string>${BUNDLE_ID_TEST_NAME}-x-callback</string>
-                                <string>com.google.sso.${BUNDLE_ID_TEST_NAME}</string>
+                                <string>${BUNDLE_ID_TEST_NAME:rfc1034identifier}.http</string>
+                                <string>${BUNDLE_ID_TEST_NAME:rfc1034identifier}.https</string>
+                                <string>${BUNDLE_ID_TEST_NAME:rfc1034identifier}-x-callback</string>
+                                <string>com.google.sso.${BUNDLE_ID_TEST_NAME:rfc1034identifier}</string>
                         </array>
                 </dict>
         </array>
         <key>UTImportedTypeDeclarations</key>
         <array>
                 <dict>
                         <key>UTTypeConformsTo</key>
                         <array>
                                 <string>public.url</string>
                                 <string>org.appextension.find-login-action</string>
@@ skipping 11 matching lines @@
                         <key>UTTypeDescription</key>
                         <string>1Password Find Login Action</string>
                         <key>UTTypeIdentifier</key>
                         <string>org.appextension.find-login-action</string>
                 </dict>
         </array>
         <key>UIBackgroundModes</key>
         <array>
                 <string>fetch</string>
         </array>
-        <key>SSOAuthURLScheme</key>
-        <string>com.google.sso.${BUNDLE_ID_TEST_NAME}</string>
+        <key>SSOAuthURLScheme</key>
+        <string>com.google.sso.${BUNDLE_ID_TEST_NAME:rfc1034identifier}</string>
 </dict>
 </plist>