protobuf/objectivec/Tests/GPBWellKnownTypesTest.m

// Protocol Buffers - Google's data interchange format
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#import "GPBWellKnownTypes.h"

#import <XCTest/XCTest.h>

#import "google/protobuf/AnyTest.pbobjc.h"

// A basically random interval into the future for testing with.
static const NSTimeInterval kFutureOffsetInterval = 15000;

// Nanosecond time accuracy
static const NSTimeInterval kTimeAccuracy = 1e-9;

@interface WellKnownTypesTest : XCTestCase
@end

@implementation WellKnownTypesTest

- (void)testTimeStamp {
  // Test a pre-Unix epoch date with fractional seconds.
  NSTimeInterval interval = -428027599.0 + -483999967/1e9;
  NSDate *preEpochDate = [NSDate dateWithTimeIntervalSince1970:interval];
  NSDate *now = [NSDate date];
  NSDate *future = [NSDate dateWithTimeIntervalSinceNow:kFutureOffsetInterval];
  NSArray *datesToTest = @[preEpochDate, now, future];

  for (NSDate *date in datesToTest) {
    // Test Creation.
    GPBTimestamp *timeStamp = [[GPBTimestamp alloc] initWithDate:date];
    NSDate *timeStampDate = timeStamp.date;

    XCTAssertGreaterThanOrEqual(timeStamp.nanos, 0,
                                @"|nanos| must be >= 0. Failing date: %@", date);
    XCTAssertLessThan(timeStamp.nanos, 1e9, @"|nanos| must be < 1e9. Failing date: %@", date);

    // Comparing timeIntervals instead of directly comparing dates because date
    // equality requires the time intervals to be exactly the same, and the
    // timeintervals go through a bit of floating point error as they are
    // converted back and forth from the internal representation.
    XCTAssertEqualWithAccuracy(date.timeIntervalSince1970,
                               timeStampDate.timeIntervalSince1970,
                               kTimeAccuracy,
                               @"Failing date: %@", date);

    NSTimeInterval time = [date timeIntervalSince1970];
    GPBTimestamp *timeStamp2 =
        [[GPBTimestamp alloc] initWithTimeIntervalSince1970:time];
    NSTimeInterval durationTime = timeStamp2.timeIntervalSince1970;
    XCTAssertEqualWithAccuracy(time, durationTime, kTimeAccuracy, @"Failing date: %@", date);
    [timeStamp release];
    [timeStamp2 release];

    // Test Mutation.
    GPBTimestamp *timeStamp3 = [[GPBTimestamp alloc] init];
    timeStamp3.date = date;
    timeStampDate = timeStamp3.date;
    XCTAssertEqualWithAccuracy(date.timeIntervalSince1970,
                               timeStampDate.timeIntervalSince1970,
                               kTimeAccuracy,
                               @"Failing date: %@", date);

    time = date.timeIntervalSince1970;
    timeStamp3.timeIntervalSince1970 = time;
    durationTime = timeStamp3.timeIntervalSince1970;
    XCTAssertEqualWithAccuracy(time, durationTime, kTimeAccuracy, @"Failing date: %@", date);
    [timeStamp3 release];
  }
}

- (void)testDuration {
  // Test Creation.
  NSTimeInterval time = [[NSDate date] timeIntervalSince1970];
  GPBDuration *duration =
      [[GPBDuration alloc] initWithTimeIntervalSince1970:time];
  NSTimeInterval durationTime = duration.timeIntervalSince1970;
  XCTAssertEqualWithAccuracy(time, durationTime, kTimeAccuracy);
  [duration release];

  // Test Mutation.
  GPBDuration *duration2 =
      [[GPBDuration alloc] initWithTimeIntervalSince1970:time];
  NSDate *date = [NSDate dateWithTimeIntervalSinceNow:kFutureOffsetInterval];
  time = date.timeIntervalSince1970;
  duration2.timeIntervalSince1970 = time;
  durationTime = duration2.timeIntervalSince1970;
  XCTAssertEqualWithAccuracy(time, durationTime, kTimeAccuracy);
  [duration2 release];
}

- (void)testAnyHelpers {

  // Set and extract covers most of the code.

  TestAny *subMessage = [TestAny message];
  subMessage.int32Value = 12345;
  TestAny *message = [TestAny message];
  NSError *err = nil;
  message.anyValue = [GPBAny anyWithMessage:subMessage error:&err];
  XCTAssertNil(err);

  NSData *data = message.data;
  XCTAssertNotNil(data);

  TestAny *message2 = [TestAny parseFromData:data error:&err];
  XCTAssertNil(err);
  XCTAssertNotNil(message2);
  XCTAssertTrue(message2.hasAnyValue);

  TestAny *subMessage2 =
      (TestAny *)[message.anyValue unpackMessageClass:[TestAny class]
                                                error:&err];
  XCTAssertNil(err);
  XCTAssertNotNil(subMessage2);
  XCTAssertEqual(subMessage2.int32Value, 12345);

  // NULL errorPtr in the two calls.

  message.anyValue = [GPBAny anyWithMessage:subMessage error:NULL];
  NSData *data2 = message.data;
  XCTAssertEqualObjects(data2, data);

  TestAny *subMessage3 =
      (TestAny *)[message.anyValue unpackMessageClass:[TestAny class]
                                                error:NULL];
  XCTAssertNotNil(subMessage3);
  XCTAssertEqualObjects(subMessage2, subMessage3);

  // Try to extract wrong type.

  GPBTimestamp *wrongMessage =
      (GPBTimestamp *)[message.anyValue unpackMessageClass:[GPBTimestamp class]
                                                     error:&err];
  XCTAssertNotNil(err);
  XCTAssertNil(wrongMessage);
  XCTAssertEqualObjects(err.domain, GPBWellKnownTypesErrorDomain);
  XCTAssertEqual(err.code, GPBWellKnownTypesErrorCodeTypeURLMismatch);

  wrongMessage =
      (GPBTimestamp *)[message.anyValue unpackMessageClass:[GPBTimestamp class]
                                                     error:NULL];
  XCTAssertNil(wrongMessage);
}

@end