Update API for Objective-C RTCSessionDescription.

webrtc/api/objctests/RTCSessionDescriptionTest.mm

+/*
+ *  Copyright 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+#include "webrtc/base/gunit.h"
+
+#import "webrtc/api/objc/RTCSessionDescription.h"
+#import "webrtc/api/objc/RTCSessionDescription+Private.h"
+#import "webrtc/base/objc/NSString+StdString.h"
+
+@interface RTCSessionDescriptionTest : NSObject
+- (void)testSessionDescriptionConversion;
+- (void)testInitFromNativeSessionDescription;
+@end
+
+@implementation RTCSessionDescriptionTest
+
+/**
+ * Test conversion of an Objective-C RTCSessionDescription to a native
+ * SessionDescriptionInterface (based on the types and SDP strings being equal).
+ */
+- (void)testSessionDescriptionConversion {
+  RTCSessionDescription *description =
+      [[RTCSessionDescription alloc] initWithType:RTCSdpTypeAnswer
+                                              sdp:[self sdp]];
+
+  webrtc::SessionDescriptionInterface *nativeDescription =
+      description.nativeDescription;
+
+  NSString *typeString =
+      [NSString stringForStdString:nativeDescription->type()];
+  EXPECT_EQ(RTCSdpTypeAnswer, [RTCSessionDescription typeForString:typeString]);
+
+  std::string sdp;
+  nativeDescription->ToString(&sdp);
+  EXPECT_EQ([self sdp].stdString, sdp);
+}
+
+- (void)testInitFromNativeSessionDescription {
+  webrtc::SessionDescriptionInterface *nativeDescription;
+
+  nativeDescription = webrtc::CreateSessionDescription(
+      webrtc::SessionDescriptionInterface::kAnswer,
+      [self sdp].stdString,
+      nullptr);
+
+  RTCSessionDescription *description =
+      [[RTCSessionDescription alloc] initWithNativeDescription:
+      nativeDescription];
+  NSString *typeString = [RTCSessionDescription stringForType:description.type];
+  EXPECT_EQ(webrtc::SessionDescriptionInterface::kAnswer, typeString.stdString);
+  EXPECT_TRUE([[self sdp] isEqualToString:description.sdp]);
+}
+
+- (NSString *)sdp {
+    return @"v=0\r\n"
+           "o=- 5319989746393411314 2 IN IP4 127.0.0.1\r\n"
+           "s=-\r\n"
+           "t=0 0\r\n"
+           "a=group:BUNDLE audio video\r\n"
+           "a=msid-semantic: WMS ARDAMS\r\n"
+           "m=audio 9 UDP/TLS/RTP/SAVPF 111 103 9 0 8 126\r\n"
+           "c=IN IP4 0.0.0.0\r\n"
+           "a=rtcp:9 IN IP4 0.0.0.0\r\n"
+           "a=ice-ufrag:f3o+0HG7l9nwIWFY\r\n"
+           "a=ice-pwd:VDctmJNCptR2TB7+meDpw7w5\r\n"
+           "a=fingerprint:sha-256 A9:D5:8D:A8:69:22:39:60:92:AD:94:1A:22:2D:5E:"
+           "A5:4A:A9:18:C2:35:5D:46:5E:59:BD:1C:AF:38:9F:E6:E1\r\n"
+           "a=setup:active\r\n"
+           "a=mid:audio\r\n"
+           "a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n"
+           "a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/"
+           "abs-send-time\r\n"
+           "a=sendrecv\r\n"
+           "a=rtcp-mux\r\n"
+           "a=rtpmap:111 opus/48000/2\r\n"
+           "a=fmtp:111 minptime=10; useinbandfec=1\r\n"
+           "a=rtpmap:103 ISAC/16000\r\n"
+           "a=rtpmap:9 G722/8000\r\n"
+           "a=rtpmap:0 PCMU/8000\r\n"
+           "a=rtpmap:8 PCMA/8000\r\n"
+           "a=rtpmap:126 telephone-event/8000\r\n"
+           "a=maxptime:60\r\n"
+           "a=ssrc:1504474588 cname:V+FdIC5AJpxLhdYQ\r\n"
+           "a=ssrc:1504474588 msid:ARDAMS ARDAMSa0\r\n"
+           "a=ssrc:1504474588 mslabel:ARDAMS\r\n"
+           "a=ssrc:1504474588 label:ARDAMSa0\r\n"
+           "m=video 9 UDP/TLS/RTP/SAVPF 100 116 117 96\r\n"
+           "c=IN IP4 0.0.0.0\r\n"
+           "a=rtcp:9 IN IP4 0.0.0.0\r\n"
+           "a=ice-ufrag:f3o+0HG7l9nwIWFY\r\n"
+           "a=ice-pwd:VDctmJNCptR2TB7+meDpw7w5\r\n"
+           "a=fingerprint:sha-256 A9:D5:8D:A8:69:22:39:60:92:AD:94:1A:22:2D:5E:"
+           "A5:4A:A9:18:C2:35:5D:46:5E:59:BD:1C:AF:38:9F:E6:E1\r\n"
+           "a=setup:active\r\n"
+           "a=mid:video\r\n"
+           "a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\n"
+           "a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/"
+           "abs-send-time\r\n"
+           "a=extmap:4 urn:3gpp:video-orientation\r\n"
+           "a=sendrecv\r\n"
+           "a=rtcp-mux\r\n"
+           "a=rtpmap:100 VP8/90000\r\n"
+           "a=rtcp-fb:100 ccm fir\r\n"
+           "a=rtcp-fb:100 nack\r\n"
+           "a=rtcp-fb:100 nack pli\r\n"
+           "a=rtcp-fb:100 goog-remb\r\n"
+           "a=rtpmap:116 red/90000\r\n"
+           "a=rtpmap:117 ulpfec/90000\r\n"
+           "a=rtpmap:96 rtx/90000\r\n"
+           "a=fmtp:96 apt=100\r\n"
+           "a=ssrc-group:FID 498297514 1644357692\r\n"
+           "a=ssrc:498297514 cname:V+FdIC5AJpxLhdYQ\r\n"
+           "a=ssrc:498297514 msid:ARDAMS ARDAMSv0\r\n"
+           "a=ssrc:498297514 mslabel:ARDAMS\r\n"
+           "a=ssrc:498297514 label:ARDAMSv0\r\n"
+           "a=ssrc:1644357692 cname:V+FdIC5AJpxLhdYQ\r\n"
+           "a=ssrc:1644357692 msid:ARDAMS ARDAMSv0\r\n"
+           "a=ssrc:1644357692 mslabel:ARDAMS\r\n"
+           "a=ssrc:1644357692 label:ARDAMSv0\r\n";
+}
+
+@end
+
+TEST(RTCSessionDescriptionTest, SessionDescriptionConversionTest) {
+  @autoreleasepool {
+    RTCSessionDescriptionTest *test = [[RTCSessionDescriptionTest alloc] init];
+    [test testSessionDescriptionConversion];
+  }
+}
+
+TEST(RTCSessionDescriptionTest, InitFromSessionDescriptionTest) {
+  @autoreleasepool {
+    RTCSessionDescriptionTest *test = [[RTCSessionDescriptionTest alloc] init];
+    [test testInitFromNativeSessionDescription];
+  }
+}