Unit test framework for Cronet

5 files changed, 477 insertions, 15 deletions

diff --git a/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
new file mode 100644
index 0000000000..3bdcca9250
--- /dev/null
+++ b/src/objective-c/tests/CronetUnitTests/CronetUnitTests.m
@@ -0,0 +1,189 @@
+//
+//  CronetUnitTest.m
+//  CronetUnitTest
+//
+//  Created by Muxi Yan on 1/10/17.
+//  Copyright © 2017 gRPC. All rights reserved.
+//
+
+#import <XCTest/XCTest.h>
+#import <sys/socket.h>
+#import <netinet/in.h>
+
+#import <Cronet/Cronet.h>
+#import <grpc/support/host_port.h>
+#import <grpc/grpc_cronet.h>
+#import <grpc/grpc.h>
+#import "test/core/end2end/cq_verifier.h"
+#import "test/core/util/port.h"
+
+#import <grpc/support/alloc.h>
+#import <grpc/support/log.h>
+
+#import "src/core/lib/channel/channel_args.h"
+#import "src/core/lib/support/env.h"
+#import "src/core/lib/support/string.h"
+#import "src/core/lib/support/tmpfile.h"
+#import "test/core/util/test_config.h"
+
+static void drain_cq(grpc_completion_queue *cq) {
+  grpc_event ev;
+  do {
+    ev = grpc_completion_queue_next(cq, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5), NULL);
+  } while (ev.type != GRPC_QUEUE_SHUTDOWN);
+}
+
+
+@interface CronetUnitTests : XCTestCase
+
+@end
+
+@implementation CronetUnitTests
+
++ (void)setUp {
+  [super setUp];
+
+/***  FILE *roots_file;
+  size_t roots_size = strlen(test_root_cert);*/
+
+  char *argv[] = {"CoreCronetEnd2EndTests"};
+  grpc_test_init(1, argv);
+
+  grpc_init();
+
+  [Cronet setHttp2Enabled:YES];
+  NSURL *url = [[[NSFileManager defaultManager]
+                 URLsForDirectory:NSDocumentDirectory
+                 inDomains:NSUserDomainMask] lastObject];
+  NSLog(@"Documents directory: %@", url);
+  [Cronet start];
+  [Cronet startNetLogToFile:@"Documents/cronet_netlog.json" logBytes:YES];
+}
+
++ (void)tearDown {
+  grpc_shutdown();
+
+  [super tearDown];
+}
+
+- (void)testInternalError {
+  grpc_call *c;
+  grpc_slice request_payload_slice =
+  grpc_slice_from_copied_string("hello world");
+  grpc_byte_buffer *request_payload =
+  grpc_raw_byte_buffer_create(&request_payload_slice, 1);
+  gpr_timespec deadline = GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5);
+  grpc_metadata meta_c[2] = {
+    {"key1", "val1", 4, 0, {{NULL, NULL, NULL, NULL}}},
+    {"key2", "val2", 4, 0, {{NULL, NULL, NULL, NULL}}}};
+
+  int port = grpc_pick_unused_port_or_die();
+  char *addr;
+  gpr_join_host_port(&addr, "127.0.0.1", port);
+  grpc_completion_queue *cq = grpc_completion_queue_create(NULL);
+  cronet_engine *cronetEngine = [Cronet getGlobalEngine];
+  grpc_channel *client = grpc_cronet_secure_channel_create(cronetEngine, addr,
+                                                           NULL, NULL);
+
+  cq_verifier *cqv = cq_verifier_create(cq);
+  grpc_op ops[6];
+  grpc_op *op;
+  grpc_metadata_array initial_metadata_recv;
+  grpc_metadata_array trailing_metadata_recv;
+  grpc_metadata_array request_metadata_recv;
+  grpc_byte_buffer *response_payload_recv = NULL;
+  grpc_call_details call_details;
+  grpc_status_code status;
+  grpc_call_error error;
+  char *details = NULL;
+  size_t details_capacity = 0;
+
+  c = grpc_channel_create_call(
+                               client, NULL, GRPC_PROPAGATE_DEFAULTS, cq, "/foo",
+                               NULL, deadline, NULL);
+  GPR_ASSERT(c);
+
+  grpc_metadata_array_init(&initial_metadata_recv);
+  grpc_metadata_array_init(&trailing_metadata_recv);
+  grpc_metadata_array_init(&request_metadata_recv);
+  grpc_call_details_init(&call_details);
+
+  memset(ops, 0, sizeof(ops));
+  op = ops;
+  op->op = GRPC_OP_SEND_INITIAL_METADATA;
+  op->data.send_initial_metadata.count = 2;
+  op->data.send_initial_metadata.metadata = meta_c;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_MESSAGE;
+  op->data.send_message = request_payload;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_INITIAL_METADATA;
+  op->data.recv_initial_metadata = &initial_metadata_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_MESSAGE;
+  op->data.recv_message = &response_payload_recv;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
+  op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
+  op->data.recv_status_on_client.status = &status;
+  op->data.recv_status_on_client.status_details = &details;
+  op->data.recv_status_on_client.status_details_capacity = &details_capacity;
+  op->flags = 0;
+  op->reserved = NULL;
+  op++;
+  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), (void*)1, NULL);
+  GPR_ASSERT(GRPC_CALL_OK == error);
+
+  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+    int sl = socket(AF_INET, SOCK_STREAM, 0);
+    GPR_ASSERT(sl >= 0);
+    struct sockaddr_in s_addr;
+    memset(&s_addr, 0, sizeof(s_addr));
+    s_addr.sin_family = AF_INET;
+    s_addr.sin_addr.s_addr = htonl(INADDR_ANY);
+    s_addr.sin_port = htons(port);
+    bind(sl, (struct sockaddr*)&s_addr, sizeof(s_addr));
+    listen(sl, 5);
+    int s = accept(sl, NULL, NULL);
+    sleep(1);
+    close(s);
+    close(sl);
+  });
+
+  CQ_EXPECT_COMPLETION(cqv, (void*)1, 1);
+  cq_verify(cqv);
+
+  GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
+
+  gpr_free(details);
+  grpc_metadata_array_destroy(&initial_metadata_recv);
+  grpc_metadata_array_destroy(&trailing_metadata_recv);
+  grpc_metadata_array_destroy(&request_metadata_recv);
+  grpc_call_details_destroy(&call_details);
+
+  grpc_call_destroy(c);
+
+  cq_verifier_destroy(cqv);
+
+  grpc_byte_buffer_destroy(request_payload);
+  grpc_byte_buffer_destroy(response_payload_recv);
+  
+  grpc_channel_destroy(client);
+  grpc_completion_queue_shutdown(cq);
+  drain_cq(cq);
+  grpc_completion_queue_destroy(cq);
+}
+
+@end
diff --git a/src/objective-c/tests/CronetUnitTests/Info.plist b/src/objective-c/tests/CronetUnitTests/Info.plist
new file mode 100644
index 0000000000..ba72822e87
--- /dev/null
+++ b/src/objective-c/tests/CronetUnitTests/Info.plist
@@ -0,0 +1,24 @@
+<?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>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>BNDL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>
diff --git a/src/objective-c/tests/Podfile b/src/objective-c/tests/Podfile
index 5785b976f2..3760330be9 100644
--- a/src/objective-c/tests/Podfile
+++ b/src/objective-c/tests/Podfile
@@ -37,13 +37,18 @@ GRPC_LOCAL_SRC = '../../..'
   end
 end
 
-target 'CoreCronetEnd2EndTests' do
-  pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c", :inhibit_warnings => true
-  pod 'CronetFramework', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
-  pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
-  pod 'gRPC-Core/Cronet-Interface', :path => GRPC_LOCAL_SRC
-  pod 'gRPC-Core/Cronet-Implementation', :path => GRPC_LOCAL_SRC
-  pod 'gRPC-Core/Tests', :path => GRPC_LOCAL_SRC
+%w(
+  CoreCronetEnd2EndTests
+  CronetUnitTests
+).each do |target_name|
+  target target_name do
+    pod 'BoringSSL', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c", :inhibit_warnings => true
+    pod 'CronetFramework', :podspec => "#{GRPC_LOCAL_SRC}/src/objective-c"
+    pod 'gRPC-Core', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-Core/Cronet-Interface', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-Core/Cronet-Implementation', :path => GRPC_LOCAL_SRC
+    pod 'gRPC-Core/Tests', :path => GRPC_LOCAL_SRC
+  end
 end
 
 # gRPC-Core.podspec needs to be modified to be successfully used for local development. A Podfile's
diff --git a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
index c4a6567ae0..4a6b332dfd 100644
--- a/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
+++ b/src/objective-c/tests/Tests.xcodeproj/project.pbxproj
@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		06467F3A8D01EC493D12ADA2 /* libPods-CronetUnitTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = C6134277D2EB8B380862A03F /* libPods-CronetUnitTests.a */; };
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@@ -15,6 +16,8 @@
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 		5E8A5DA91D3840B4000F8BC4 /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
+		5EAD6D271E27047400002378 /* CronetUnitTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 5EAD6D261E27047400002378 /* CronetUnitTests.m */; };
+		5EAD6D291E27047400002378 /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
 		5EE84BF41D4717E40050C6CC /* InteropTestsRemoteWithCronet.m in Sources */ = {isa = PBXBuildFile; fileRef = 5EE84BF31D4717E40050C6CC /* InteropTestsRemoteWithCronet.m */; };
 		5EE84BF61D4717E40050C6CC /* libTests.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 635697C71B14FC11007A7283 /* libTests.a */; };
 		5EE84BFE1D471D400050C6CC /* InteropTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 635ED2EB1B1A3BC400FDE5C3 /* InteropTests.m */; };
@@ -52,6 +55,13 @@
 			remoteGlobalIDString = 635697C61B14FC11007A7283;
 			remoteInfo = Tests;
 		};
+		5EAD6D2A1E27047400002378 /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 635697BF1B14FC11007A7283 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 635697C61B14FC11007A7283;
+			remoteInfo = Tests;
+		};
 		5EE84BF71D4717E40050C6CC /* PBXContainerItemProxy */ = {
 			isa = PBXContainerItemProxy;
 			containerPortal = 635697BF1B14FC11007A7283 /* Project object */;
@@ -109,6 +119,7 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
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@@ -117,6 +128,7 @@
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+		386712AEACF7C2190C4B8B3F /* Pods-CronetUnitTests.cronet.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-CronetUnitTests.cronet.xcconfig"; path = "Pods/Target Support Files/Pods-CronetUnitTests/Pods-CronetUnitTests.cronet.xcconfig"; sourceTree = "<group>"; };
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@@ -127,6 +139,9 @@
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+		5EAD6D241E27047400002378 /* CronetUnitTests.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = CronetUnitTests.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		5EAD6D261E27047400002378 /* CronetUnitTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = CronetUnitTests.m; sourceTree = "<group>"; };
+		5EAD6D281E27047400002378 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		5EE84BF11D4717E40050C6CC /* InteropTestsRemoteWithCronet.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = InteropTestsRemoteWithCronet.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
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@@ -146,6 +161,7 @@
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@@ -153,6 +169,7 @@
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 		DBEDE45BDA60DF1E1C8950C0 /* libPods-InteropTestsLocalSSL.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-InteropTestsLocalSSL.a"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -177,6 +194,15 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EAD6D211E27047400002378 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				5EAD6D291E27047400002378 /* libTests.a in Frameworks */,
+				06467F3A8D01EC493D12ADA2 /* libPods-CronetUnitTests.a in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		5EE84BEE1D4717E40050C6CC /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -254,6 +280,7 @@
 				20DFF2F3C97EF098FE5A3171 /* libPods-Tests.a */,
 				FBD98AC417B9882D32B19F28 /* libPods-CoreCronetEnd2EndTests.a */,
 				9E9444C764F0FFF64A7EB58E /* libPods-InteropTestsRemoteWithCronet.a */,
+				C6134277D2EB8B380862A03F /* libPods-CronetUnitTests.a */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -287,6 +314,9 @@
 				3F27B2E744482771EB93C394 /* Pods-InteropTestsRemoteWithCronet.cronet.xcconfig */,
 				79C68EFFCB5533475D810B79 /* Pods-RxLibraryUnitTests.cronet.xcconfig */,
 				F671D4CAD2864FB203B920B4 /* Pods-Tests.cronet.xcconfig */,
+				64F68A9A6A63CC930DD30A6E /* Pods-CronetUnitTests.debug.xcconfig */,
+				386712AEACF7C2190C4B8B3F /* Pods-CronetUnitTests.cronet.xcconfig */,
+				02192CF1FF9534E3D18C65FC /* Pods-CronetUnitTests.release.xcconfig */,
 			);
 			name = Pods;
 			sourceTree = "<group>";
@@ -299,6 +329,15 @@
 			path = CoreCronetEnd2EndTests;
 			sourceTree = "<group>";
 		};
+		5EAD6D251E27047400002378 /* CronetUnitTests */ = {
+			isa = PBXGroup;
+			children = (
+				5EAD6D261E27047400002378 /* CronetUnitTests.m */,
+				5EAD6D281E27047400002378 /* Info.plist */,
+			);
+			path = CronetUnitTests;
+			sourceTree = "<group>";
+		};
 		5EE84BF21D4717E40050C6CC /* InteropTestsRemoteWithCronet */ = {
 			isa = PBXGroup;
 			children = (
@@ -315,6 +354,7 @@
 				63E240CF1B6C63DC005F3B0E /* TestCertificates.bundle */,
 				5E8A5DA51D3840B4000F8BC4 /* CoreCronetEnd2EndTests */,
 				5EE84BF21D4717E40050C6CC /* InteropTestsRemoteWithCronet */,
+				5EAD6D251E27047400002378 /* CronetUnitTests */,
 				635697C81B14FC11007A7283 /* Products */,
 				51E4650F34F854F41FF053B3 /* Pods */,
 				136D535E19727099B941D7B1 /* Frameworks */,
@@ -332,6 +372,7 @@
 				63DC84431BE152B5000708E8 /* InteropTestsLocalCleartext.xctest */,
 				5E8A5DA41D3840B4000F8BC4 /* CoreCronetEnd2EndTests.xctest */,
 				5EE84BF11D4717E40050C6CC /* InteropTestsRemoteWithCronet.xctest */,
+				5EAD6D241E27047400002378 /* CronetUnitTests.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -384,6 +425,27 @@
 			productReference = 5E8A5DA41D3840B4000F8BC4 /* CoreCronetEnd2EndTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
 		};
+		5EAD6D231E27047400002378 /* CronetUnitTests */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 5EAD6D2F1E27047400002378 /* Build configuration list for PBXNativeTarget "CronetUnitTests" */;
+			buildPhases = (
+				80E2DDD2EC04A4009F45E933 /* [CP] Check Pods Manifest.lock */,
+				5EAD6D201E27047400002378 /* Sources */,
+				5EAD6D211E27047400002378 /* Frameworks */,
+				5EAD6D221E27047400002378 /* Resources */,
+				A686B9967BB4CB81B1CBF8F8 /* [CP] Embed Pods Frameworks */,
+				051806D6A59B19C8A0B76BED /* [CP] Copy Pods Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				5EAD6D2B1E27047400002378 /* PBXTargetDependency */,
+			);
+			name = CronetUnitTests;
+			productName = CronetUnitTests;
+			productReference = 5EAD6D241E27047400002378 /* CronetUnitTests.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 		5EE84BF01D4717E40050C6CC /* InteropTestsRemoteWithCronet */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 5EE84BFB1D4717E40050C6CC /* Build configuration list for PBXNativeTarget "InteropTestsRemoteWithCronet" */;
@@ -541,6 +603,9 @@
 					5E8A5DA31D3840B4000F8BC4 = {
 						CreatedOnToolsVersion = 7.3.1;
 					};
+					5EAD6D231E27047400002378 = {
+						CreatedOnToolsVersion = 7.3.1;
+					};
 					5EE84BF01D4717E40050C6CC = {
 						CreatedOnToolsVersion = 7.3.1;
 					};
@@ -584,6 +649,7 @@
 				63DC84421BE152B5000708E8 /* InteropTestsLocalCleartext */,
 				5E8A5DA31D3840B4000F8BC4 /* CoreCronetEnd2EndTests */,
 				5EE84BF01D4717E40050C6CC /* InteropTestsRemoteWithCronet */,
+				5EAD6D231E27047400002378 /* CronetUnitTests */,
 			);
 		};
 /* End PBXProject section */
@@ -596,6 +662,13 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EAD6D221E27047400002378 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		5EE84BEF1D4717E40050C6CC /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -643,6 +716,21 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
+		051806D6A59B19C8A0B76BED /* [CP] Copy Pods Resources */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Copy Pods Resources";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-CronetUnitTests/Pods-CronetUnitTests-resources.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 		31F8D1C407195CBF0C02929B /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -670,7 +758,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		4F5690DC0E6AD6663FE78B8B /* [CP] Embed Pods Frameworks */ = {
@@ -700,7 +788,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		5F14F59509E10C2852014F9E /* [CP] Embed Pods Frameworks */ = {
@@ -760,7 +848,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		796680C7599CB4ED736DD62A /* [CP] Check Pods Manifest.lock */ = {
@@ -775,7 +863,22 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
+			showEnvVarsInLog = 0;
+		};
+		80E2DDD2EC04A4009F45E933 /* [CP] Check Pods Manifest.lock */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		8AD3130D3C58A0FB32FF2A36 /* [CP] Copy Pods Resources */ = {
@@ -820,7 +923,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		A441F71824DCB9D0CA297748 /* [CP] Copy Pods Resources */ = {
@@ -838,6 +941,21 @@
 			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-AllTests/Pods-AllTests-resources.sh\"\n";
 			showEnvVarsInLog = 0;
 		};
+		A686B9967BB4CB81B1CBF8F8 /* [CP] Embed Pods Frameworks */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "[CP] Embed Pods Frameworks";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "\"${SRCROOT}/Pods/Target Support Files/Pods-CronetUnitTests/Pods-CronetUnitTests-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
+		};
 		A8E3AC66DF770B774114A30E /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
@@ -880,7 +998,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		C0F7B1FF6F88CC5FBF362F4C /* [CP] Check Pods Manifest.lock */ = {
@@ -895,7 +1013,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 		C2E09DC4BD239F71160F0CC1 /* [CP] Copy Pods Resources */ = {
@@ -985,7 +1103,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [[ $? != 0 ]] ; then\n    cat << EOM\nerror: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\nEOM\n    exit 1\nfi\n";
+			shellScript = "diff \"${PODS_ROOT}/../Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n";
 			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
@@ -999,6 +1117,14 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		5EAD6D201E27047400002378 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				5EAD6D271E27047400002378 /* CronetUnitTests.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		5EE84BED1D4717E40050C6CC /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -1073,6 +1199,11 @@
 			target = 635697C61B14FC11007A7283 /* Tests */;
 			targetProxy = 5E8A5DAA1D3840B4000F8BC4 /* PBXContainerItemProxy */;
 		};
+		5EAD6D2B1E27047400002378 /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 635697C61B14FC11007A7283 /* Tests */;
+			targetProxy = 5EAD6D2A1E27047400002378 /* PBXContainerItemProxy */;
+		};
 		5EE84BF81D4717E40050C6CC /* PBXTargetDependency */ = {
 			isa = PBXTargetDependency;
 			target = 635697C61B14FC11007A7283 /* Tests */;
@@ -1138,6 +1269,53 @@
 			};
 			name = Release;
 		};
+		5EAD6D2C1E27047400002378 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 64F68A9A6A63CC930DD30A6E /* Pods-CronetUnitTests.debug.xcconfig */;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_TESTABILITY = YES;
+				INFOPLIST_FILE = CronetUnitTests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = io.grpc.CronetUnitTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				USER_HEADER_SEARCH_PATHS = "\"${PODS_ROOT}/../../../..\" $(inherited)";
+			};
+			name = Debug;
+		};
+		5EAD6D2D1E27047400002378 /* Cronet */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 386712AEACF7C2190C4B8B3F /* Pods-CronetUnitTests.cronet.xcconfig */;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				INFOPLIST_FILE = CronetUnitTests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = io.grpc.CronetUnitTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				USER_HEADER_SEARCH_PATHS = "\"${PODS_ROOT}/../../../..\" $(inherited)";
+			};
+			name = Cronet;
+		};
+		5EAD6D2E1E27047400002378 /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 02192CF1FF9534E3D18C65FC /* Pods-CronetUnitTests.release.xcconfig */;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				INFOPLIST_FILE = CronetUnitTests/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = io.grpc.CronetUnitTests;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				USER_HEADER_SEARCH_PATHS = "\"${PODS_ROOT}/../../../..\" $(inherited)";
+			};
+			name = Release;
+		};
 		5EC3C7A01D4FC18C000330E2 /* Cronet */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -1597,6 +1775,16 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
+		5EAD6D2F1E27047400002378 /* Build configuration list for PBXNativeTarget "CronetUnitTests" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				5EAD6D2C1E27047400002378 /* Debug */,
+				5EAD6D2D1E27047400002378 /* Cronet */,
+				5EAD6D2E1E27047400002378 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		5EE84BFB1D4717E40050C6CC /* Build configuration list for PBXNativeTarget "InteropTestsRemoteWithCronet" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (
diff --git a/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/CronetUnitTests.xcscheme b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/CronetUnitTests.xcscheme
new file mode 100644
index 0000000000..ea711e09e9
--- /dev/null
+++ b/src/objective-c/tests/Tests.xcodeproj/xcshareddata/xcschemes/CronetUnitTests.xcscheme
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0730"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "5EAD6D231E27047400002378"
+               BuildableName = "CronetUnitTests.xctest"
+               BlueprintName = "CronetUnitTests"
+               ReferencedContainer = "container:Tests.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>