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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <XCTest/XCTest.h>
#import "Firestore/Source/API/FIRTimestamp+Internal.h"
NS_ASSUME_NONNULL_BEGIN
@interface FIRTimestampTest : XCTestCase
@end
NSDate *TestDate(int year, int month, int day, int hour, int minute, int second) {
NSDateComponents *comps = [[NSDateComponents alloc] init];
comps.year = year;
comps.month = month;
comps.day = day;
comps.hour = hour;
comps.minute = minute;
comps.second = second;
// Force time zone to UTC to avoid these values changing due to daylight saving.
comps.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
return [[NSCalendar currentCalendar] dateFromComponents:comps];
}
@implementation FIRTimestampTest
- (void)testFromDate {
// Use an NSDate such that its fractional seconds have an exact representation to avoid losing
// precision.
NSDate *input = [NSDate dateWithTimeIntervalSinceReferenceDate:1.5];
FIRTimestamp *actual = [FIRTimestamp timestampWithDate:input];
static const int64_t kSecondsFromEpochToReferenceDate = 978307200;
XCTAssertEqual(kSecondsFromEpochToReferenceDate + 1, actual.seconds);
XCTAssertEqual(500000000, actual.nanoseconds);
FIRTimestamp *expected =
[[FIRTimestamp alloc] initWithSeconds:(kSecondsFromEpochToReferenceDate + 1)
nanoseconds:500000000];
XCTAssertEqualObjects(expected, actual);
}
- (void)testSO8601String {
NSDate *date = TestDate(1912, 4, 14, 23, 40, 0);
FIRTimestamp *timestamp =
[[FIRTimestamp alloc] initWithSeconds:(int64_t)date.timeIntervalSince1970
nanoseconds:543000000];
XCTAssertEqualObjects(timestamp.ISO8601String, @"1912-04-14T23:40:00.543000000Z");
}
- (void)testISO8601String_withLowMilliseconds {
NSDate *date = TestDate(1912, 4, 14, 23, 40, 0);
FIRTimestamp *timestamp =
[[FIRTimestamp alloc] initWithSeconds:(int64_t)date.timeIntervalSince1970
nanoseconds:7000000];
XCTAssertEqualObjects(timestamp.ISO8601String, @"1912-04-14T23:40:00.007000000Z");
}
- (void)testISO8601String_withLowNanos {
FIRTimestamp *timestamp = [[FIRTimestamp alloc] initWithSeconds:0 nanoseconds:1];
XCTAssertEqualObjects(timestamp.ISO8601String, @"1970-01-01T00:00:00.000000001Z");
}
- (void)testISO8601String_withNegativeSeconds {
FIRTimestamp *timestamp = [[FIRTimestamp alloc] initWithSeconds:-1 nanoseconds:999999999];
XCTAssertEqualObjects(timestamp.ISO8601String, @"1969-12-31T23:59:59.999999999Z");
}
- (void)testCompare {
NSArray<FIRTimestamp *> *timestamps = @[
[[FIRTimestamp alloc] initWithSeconds:12344 nanoseconds:999999999],
[[FIRTimestamp alloc] initWithSeconds:12345 nanoseconds:0],
[[FIRTimestamp alloc] initWithSeconds:12345 nanoseconds:000000001],
[[FIRTimestamp alloc] initWithSeconds:12345 nanoseconds:99999999],
[[FIRTimestamp alloc] initWithSeconds:12345 nanoseconds:100000000],
[[FIRTimestamp alloc] initWithSeconds:12345 nanoseconds:100000001],
[[FIRTimestamp alloc] initWithSeconds:12346 nanoseconds:0],
];
for (int i = 0; i < timestamps.count - 1; ++i) {
XCTAssertEqual(NSOrderedAscending, [timestamps[i] compare:timestamps[i + 1]]);
XCTAssertEqual(NSOrderedDescending, [timestamps[i + 1] compare:timestamps[i]]);
}
}
@end
NS_ASSUME_NONNULL_END
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