protobuf/objectivec/Tests/GPBWellKnownTypesTest.m

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

#import <XCTest/XCTest.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 Creation.
  NSDate *date = [NSDate date];
  GPBTimestamp *timeStamp = [[GPBTimestamp alloc] initWithDate:date];
  NSDate *timeStampDate = timeStamp.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);

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

  // Test Mutation.
  date = [NSDate dateWithTimeIntervalSinceNow:kFutureOffsetInterval];
  timeStamp2.date = date;
  timeStampDate = timeStamp2.date;
  XCTAssertEqualWithAccuracy(date.timeIntervalSince1970,
                             timeStampDate.timeIntervalSince1970,
                             kTimeAccuracy);

  time = date.timeIntervalSince1970;
  timeStamp2.timeIntervalSince1970 = time;
  durationTime = timeStamp2.timeIntervalSince1970;
  XCTAssertEqualWithAccuracy(time, durationTime, kTimeAccuracy);
  [timeStamp2 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];
}

@end