mDNSMacOSX/Tests/HelperFunctionTest.m

   1 //
   2 //  HelperFunctionTest.m
   3 //  Tests
   4 //
   5 //  Copyright (c) 2019 Apple Inc. All rights reserved.
   6 //
   7
   8 #import <XCTest/XCTest.h>
   9 #include "unittest_common.h"
  10
  11 @interface HelperFunctionTest : XCTestCase
  12
  13 @end
  14
  15 @implementation HelperFunctionTest
  16
  17 - (void)setUp {
  18     // It is empty for now.
  19 }
  20
  21 - (void)tearDown {
  22     // It is empty for now.
  23 }
  24
  25 - (void)testCFStringToDomainLabel {
  26     // test_cstring[i][0] is the input
  27     // test_cstring[i][1] is the expected correct output
  28     static const char * const test_cstring[][2] = {
  29         {"short", "short"},
  30         {"this-is-a-normal-computer-name", "this-is-a-normal-computer-name"},
  31         {"", ""},
  32         {"This is an ascii string whose length is more than 63 bytes, where it takes one byte to store every character", "This is an ascii string whose length is more than 63 bytes, whe"},
  33         {"यह एक एस्सी स्ट्रिंग है जिसकी लंबाई साठ तीन बाइट्स से अधिक है, जहां यह हर चरित्र को संग्रहीत करने के लिए एक बाइट लेता है", "यह एक एस्सी स्ट्रिंग है "}, // "यह एक एस्सी स्ट्रिंग है " is 62 byte, and "यह एक एस्सी स्ट्रिंग है जि" is more than 63, so the result is expected to truncated to 62 bytes instead of 63 bytes
  34         {"वितीय टेस्ट ट्राई टी॰वी॰", "वितीय टेस्ट ट्राई टी॰वी"},
  35         {"这是一个超过六十三比特的其中每个中文字符占三比特的中文字符串", "这是一个超过六十三比特的其中每个中文字符占"},
  36         {"🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝", "🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝"} // "🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝" is 60 bytes, and "🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝🃝" is more than 63 bytes so the result is expected to be truncated to 60 bytes instead of 64 bytes
  37     };
  38
  39     for (int i = 0, n = sizeof(test_cstring) / sizeof(test_cstring[0]); i < n; i++) {
  40         // construct CFString from input
  41         CFStringRef name_ref = CFStringCreateWithCString(kCFAllocatorDefault, test_cstring[i][0], kCFStringEncodingUTF8);
  42         XCTAssertTrue(name_ref != NULL, @"unit test internal error. {descrption=\"name_ref should be non-NULL.\"}");
  43
  44         // call the function being tested
  45         domainlabel label;
  46         mDNSDomainLabelFromCFString_ut(name_ref, &label);
  47
  48         // Check if the result is correct
  49         XCTAssertEqual(label.c[0], strlen(test_cstring[i][1]),
  50                        @"name length is not equal. {expect=%d,actual=%d}", strlen(test_cstring[i][1]), label.c[0]);
  51         XCTAssertTrue(memcmp(label.c + 1, test_cstring[i][1], label.c[0]) == 0,
  52                       @"name is not correctly decoded. {expect='%s',actual='%s'}", test_cstring[i][1], label.c + 1);
  53
  54         CFRelease(name_ref);
  55     }
  56 }
  57
  58 @end