Establish Objective C end-to-end core test with Cronet

gRPC-Cronet.podspec

@@ -52,12 +52,34 @@ Pod::Spec.new do |s|
   s.osx.deployment_target = '10.9'
   s.requires_arc = false
 
-  name = 'grpc'
+  name = 'GRPCCronet'
 
   s.module_name = name
 
-  s.header_mappings_dir = '.'
+  # When creating a dynamic framework, copy the headers under `include/grpc/` into the root of
+  # the `Headers/` directory of the framework (i.e., not under `Headers/include/grpc`).
+  s.header_mappings_dir = 'include/grpc'
 
+  # The above has an undesired effect when creating a static library: It forces users to write
+  # includes like `#include <gRPC-Cronet/grpc.h>`. `s.header_dir` adds a path prefix to that, and
+  # because Cocoapods lets omit the pod name when including headers of static libraries, the
+  # following lets users write `#include <grpc/grpc.h>`.
+  s.header_dir = 'grpc'
+
+  # To compile the library, we need the user headers search path (quoted includes) to point to the
+  # root of the repo, and the system headers search path (angled includes) to point to `include/`.
+  # Cocoapods effectively clones the repo under `<Podfile dir>/Pods/gRPC-Cronet/`, and sets a build
+  # variable called `$(PODS_ROOT)` to `<Podfile dir>/Pods/`, so we use that.
+  #
+  # Relying on the file structure under $(PODS_ROOT) isn't officially supported in Cocoapods, as it
+  # is taken as an implementation detail. We've asked for an alternative, and have been told that
+  # what we're doing should keep working: https://github.com/CocoaPods/CocoaPods/issues/4386
+  #
+  # The `src_root` value of `$(PODS_ROOT)/gRPC-Cronet` assumes Cocoapods is installing this pod from
+  # its remote repo. For local development of this library, enabled by using `:path` in the Podfile,
+  # that assumption is wrong. In such case, the following settings need to be reset with the
+  # appropriate value of `src_root`. This can be accomplished in the `pre_install` hook of the
+  # Podfile; see `src/objective-c/tests/Podfile` for an example.
   src_root = '$(PODS_ROOT)/gRPC-Cronet'
   s.pod_target_xcconfig = {
     'GRPC_SRC_ROOT' => src_root,
@@ -80,9 +102,16 @@ Pod::Spec.new do |s|
 
     ss.source_files = 'src/core/ext/transport/cronet/client/secure/cronet_channel_create.c',
                       'src/core/ext/transport/cronet/transport/cronet_transport.c',
-                      'test/core/end2end/**/*.{c,h}',
+                      'test/core/end2end/cq_verifier.{c,h}',
-                      'test/core/util'
+                      'test/core/end2end/end2end_tests.{c,h}',
+                      'test/core/end2end/tests/*.{c,h}',
+                      'test/core/end2end/data/*.{c,h}',
+                      'test/core/util/test_config.{c,h}',
+                      'test/core/util/port.h',
+                      'test/core/util/port_posix.c',
+                      'test/core/util/port_server_client.{c,h}'
 
     ss.dependency 'gRPC-Core', version
+    ss.dependency 'CronetFramework'
   end
 end

src/objective-c/tests/End2EndTest/End2EndTest.xcodeproj/project.pbxproj

@@ -13,11 +13,12 @@
 		5E201A7F1D3452D600A81F3A /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 5E201A7E1D3452D600A81F3A /* Assets.xcassets */; };
 		5E201A821D3452D600A81F3A /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 5E201A801D3452D600A81F3A /* LaunchScreen.storyboard */; };
 		5EC76B971D36B2EE00A74FED /* h2_ssl.m in Sources */ = {isa = PBXBuildFile; fileRef = 5EC76B961D36B2EE00A74FED /* h2_ssl.m */; };
-		C124E05DC4ED9F5CA3EFD20D /* libPods-End2EndTest.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 931C29940B821E295AA90634 /* libPods-End2EndTest.a */; };
+		809A4524D003F25B67A9E20C /* libPods-End2EndTest.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 45442114339F6871ABA5F464 /* libPods-End2EndTest.a */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
 		18957F402A222D334CEBE57B /* Pods-End2EndTest.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-End2EndTest.debug.xcconfig"; path = "Pods/Target Support Files/Pods-End2EndTest/Pods-End2EndTest.debug.xcconfig"; sourceTree = "<group>"; };
+		45442114339F6871ABA5F464 /* libPods-End2EndTest.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-End2EndTest.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		5E201A6F1D3452D500A81F3A /* End2EndTest.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = End2EndTest.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		5E201A751D3452D500A81F3A /* AppDelegate.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		5E201A761D3452D500A81F3A /* AppDelegate.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
@@ -28,7 +29,6 @@
 		5E201A811D3452D600A81F3A /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		5E201A831D3452D600A81F3A /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		5EC76B961D36B2EE00A74FED /* h2_ssl.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = h2_ssl.m; sourceTree = "<group>"; };
-		931C29940B821E295AA90634 /* libPods-End2EndTest.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-End2EndTest.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		E7725B916D22B5AC6ECF8964 /* Pods-End2EndTest.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-End2EndTest.release.xcconfig"; path = "Pods/Target Support Files/Pods-End2EndTest/Pods-End2EndTest.release.xcconfig"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -37,7 +37,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				C124E05DC4ED9F5CA3EFD20D /* libPods-End2EndTest.a in Frameworks */,
+				809A4524D003F25B67A9E20C /* libPods-End2EndTest.a in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -98,7 +98,7 @@
 		D564C37197511893E4E62D12 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
-				931C29940B821E295AA90634 /* libPods-End2EndTest.a */,
+				45442114339F6871ABA5F464 /* libPods-End2EndTest.a */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";

src/objective-c/tests/End2EndTest/End2EndTest/AppDelegate.h

@@ -1,10 +1,35 @@
-//
+/*
-//  AppDelegate.h
+ *
-//  End2EndTest
+ * Copyright 2015, Google Inc.
-//
+ * All rights reserved.
-//  Created by mxyan on 7/11/16.
+ *
-//  Copyright © 2016 Google. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
-//
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
 
 #import <UIKit/UIKit.h>
 

src/objective-c/tests/End2EndTest/End2EndTest/AppDelegate.m

@@ -1,10 +1,35 @@
-//
+/*
-//  AppDelegate.m
+ *
-//  End2EndTest
+ * Copyright 2015, Google Inc.
-//
+ * All rights reserved.
-//  Created by mxyan on 7/11/16.
+ *
-//  Copyright © 2016 Google. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
-//
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
 
 #import "AppDelegate.h"
 

src/objective-c/tests/End2EndTest/End2EndTest/h2_ssl.m

@@ -31,6 +31,13 @@
  *
  */
 
+/* 
+ * This fixture creates a server full stack using chttp2 and a client
+ * full stack using Cronet. End-to-end tests are run against this fixture
+ * setting.
+ *
+ */
+
 #include "test/core/end2end/end2end_tests.h"
 
 #include <stdio.h>
@@ -83,7 +90,7 @@ static void process_auth_failure(void *state, grpc_auth_context *ctx,
   cb(user_data, NULL, 0, NULL, 0, GRPC_STATUS_UNAUTHENTICATED, NULL);
 }
 
-static void chttp2_init_client_secure_fullstack(
+static void cronet_init_client_secure_fullstack(
     grpc_end2end_test_fixture *f, grpc_channel_args *client_args,
     cronet_engine *cronetEngine) {
   fullstack_secure_fixture_data *ffd = f->fixture_data;
@@ -113,7 +120,7 @@ void chttp2_tear_down_secure_fullstack(grpc_end2end_test_fixture *f) {
   gpr_free(ffd);
 }
 
-static void chttp2_init_client_simple_ssl_secure_fullstack(
+static void cronet_init_client_simple_ssl_secure_fullstack(
     grpc_end2end_test_fixture *f, grpc_channel_args *client_args) {
   grpc_arg ssl_name_override = {GRPC_ARG_STRING,
                                 GRPC_SSL_TARGET_NAME_OVERRIDE_ARG,
@@ -125,7 +132,7 @@ static void chttp2_init_client_simple_ssl_secure_fullstack(
   [Cronet start];
   cronet_engine *cronetEngine = [Cronet getGlobalEngine];
   
-  chttp2_init_client_secure_fullstack(f, new_client_args, cronetEngine);
+  cronet_init_client_secure_fullstack(f, new_client_args, cronetEngine);
   grpc_channel_args_destroy(new_client_args);
 }
 
@@ -161,7 +168,7 @@ static grpc_end2end_test_config configs[] = {
      FEATURE_MASK_SUPPORTS_DELAYED_CONNECTION |
          FEATURE_MASK_SUPPORTS_PER_CALL_CREDENTIALS,
      chttp2_create_fixture_secure_fullstack,
-     chttp2_init_client_simple_ssl_secure_fullstack,
+     cronet_init_client_simple_ssl_secure_fullstack,
      chttp2_init_server_simple_ssl_secure_fullstack,
      chttp2_tear_down_secure_fullstack},
 };

src/objective-c/tests/End2EndTest/End2EndTest/main.m

@@ -1,16 +0,0 @@
-//
-//  main.m
-//  End2EndTest
-//
-//  Created by mxyan on 7/11/16.
-//  Copyright © 2016 Google. All rights reserved.
-//
-
-#import <UIKit/UIKit.h>
-#import "AppDelegate.h"
-
-int main(int argc, char * argv[]) {
-  @autoreleasepool {
-      return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
-  }
-}

src/objective-c/tests/End2EndTest/Podfile

@@ -32,8 +32,11 @@ end
 #
 # TODO(jcanizales): Send a PR to Cocoapods to get rid of this need.
 pre_install do |installer|
-  # This is the gRPC-Core podspec object, as initialized by its podspec file.
+  %w(
-  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Core'}.root_spec
+    gRPC-Core
+    gRPC-Cronet
+  ).each do |target_name|
+    grpc_core_spec = installer.pod_targets.find{|t| t.name == target_name}.root_spec
 
     # Copied from gRPC-Core.podspec, except for the adjusted src_root:
     src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
@@ -42,28 +45,12 @@ pre_install do |installer|
       'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
       'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
       # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
+      # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking 
-    # build.
+      # the build.
       'USE_HEADERMAP' => 'NO',
       'ALWAYS_SEARCH_USER_PATHS' => 'NO',
     }
-
+  end
-# This is the gRPC-Core podspec object, as initialized by its podspec file.
-  grpc_core_spec = installer.pod_targets.find{|t| t.name == 'gRPC-Cronet'}.root_spec
-  
-  # Copied from gRPC-Core.podspec, except for the adjusted src_root:
-  src_root = "$(PODS_ROOT)/../#{GRPC_LOCAL_SRC}"
-  grpc_core_spec.pod_target_xcconfig = {
-    'GRPC_SRC_ROOT' => src_root,
-    'HEADER_SEARCH_PATHS' => '"$(inherited)" "$(GRPC_SRC_ROOT)/include"',
-    'USER_HEADER_SEARCH_PATHS' => '"$(GRPC_SRC_ROOT)"',
-    # If we don't set these two settings, `include/grpc/support/time.h` and
-    # `src/core/lib/support/string.h` shadow the system `<time.h>` and `<string.h>`, breaking the
-    # build.
-    'USE_HEADERMAP' => 'NO',
-    'ALWAYS_SEARCH_USER_PATHS' => 'NO',
-  }
-
 end
 
 post_install do |installer|