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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 "FIRMessagingCodedInputStream.h"
@interface FIRMessagingCodedInputStreamTest : XCTestCase
@end
@implementation FIRMessagingCodedInputStreamTest
- (void)testReadingSmallDataStream {
FIRMessagingCodedInputStream *stream =
[[FIRMessagingCodedInputStream alloc] initWithData:[[self class] sampleData1]];
int8_t actualTag = 2;
int8_t tag;
XCTAssertTrue([stream readTag:&tag]);
XCTAssertEqual(actualTag, tag);
// test length
int32_t actualLength = 4;
int32_t length;
XCTAssertTrue([stream readLength:&length]);
XCTAssertEqual(actualLength, length);
NSData *actualData = [[self class] packetDataForSampleData1];
NSData *data = [stream readDataWithLength:length];
XCTAssertTrue([actualData isEqualToData:data]);
}
- (void)testReadingLargeDataStream {
FIRMessagingCodedInputStream *stream =
[[FIRMessagingCodedInputStream alloc] initWithData:[[self class] sampleData2]];
int8_t actualTag = 5;
int8_t tag;
XCTAssertTrue([stream readTag:&tag]);
XCTAssertEqual(actualTag, tag);
int32_t actualLength = 257;
int32_t length;
XCTAssertTrue([stream readLength:&length]);
XCTAssertEqual(actualLength, length);
NSData *actualData = [[self class] packetDataForSampleData2];
NSData *data = [stream readDataWithLength:length];
XCTAssertTrue([actualData isEqualToData:data]);
}
- (void)testReadingInvalidDataStream {
FIRMessagingCodedInputStream *stream =
[[FIRMessagingCodedInputStream alloc] initWithData:[[self class] invalidData]];
int8_t actualTag = 7;
int8_t tag;
XCTAssertTrue([stream readTag:&tag]);
XCTAssertEqual(actualTag, tag);
int32_t actualLength = 2;
int32_t length;
XCTAssertTrue([stream readLength:&length]);
XCTAssertEqual(actualLength, length);
XCTAssertNil([stream readDataWithLength:length]);
}
+ (NSData *)sampleData1 {
// tag = 2,
// length = 4,
// data = integer 255
const char data[] = { 0x02, 0x04, 0x80, 0x00, 0x00, 0xff };
return [NSData dataWithBytes:data length:6];
}
+ (NSData *)packetDataForSampleData1 {
const char data[] = { 0x80, 0x00, 0x00, 0xff };
return [NSData dataWithBytes:data length:4];
}
+ (NSData *)sampleData2 {
// test reading varint properly
// tag = 5,
// length = 257,
// data = length 257
const char tagAndLength[] = { 0x05, 0x81, 0x02 };
NSMutableData *data = [NSMutableData dataWithBytes:tagAndLength length:3];
[data appendData:[self packetDataForSampleData2]];
return data;
}
+ (NSData *)packetDataForSampleData2 {
char packetData[257] = { 0xff, 0xff, 0xff };
return [NSData dataWithBytes:packetData length:257];
}
+ (NSData *)invalidData {
// tag = 7,
// length = 2,
// data = (length 1)
const char data[] = { 0x07, 0x02, 0xff };
return [NSData dataWithBytes:data length:3];
}
@end
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