libc/test/src/__support/char_vector_test.cpp

   1 //===-- Unittests for char_vector ---------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/__support/char_vector.h"
  10 #include "test/UnitTest/Test.h"
  11
  12 using LIBC_NAMESPACE::CharVector;
  13
  14 TEST(LlvmLibcCharVectorTest, InitializeCheck) {
  15   CharVector v;
  16   ASSERT_EQ(v.length(), size_t(0));
  17 }
  18
  19 TEST(LlvmLibcCharVectorTest, AppendShort) {
  20   CharVector v;
  21   ASSERT_EQ(v.length(), size_t(0));
  22
  23   static constexpr char test_str[] = "1234567890";
  24   for (size_t i = 0; test_str[i] != '\0'; ++i) {
  25     v.append(test_str[i]);
  26   }
  27   ASSERT_STREQ(v.c_str(), test_str);
  28 }
  29
  30 TEST(LlvmLibcCharVectorTest, AppendMedium) {
  31   CharVector v;
  32   ASSERT_EQ(v.length(), size_t(0));
  33
  34   // 100 characters (each row is 50)
  35   static constexpr char test_str[] =
  36       "12345678901234567890123456789012345678901234567890"
  37       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy";
  38   for (size_t i = 0; test_str[i] != '\0'; ++i) {
  39     ASSERT_EQ(v.length(), i);
  40     v.append(test_str[i]);
  41   }
  42   ASSERT_STREQ(v.c_str(), test_str);
  43   ASSERT_EQ(v.length(), size_t(100));
  44 }
  45
  46 TEST(LlvmLibcCharVectorTest, AppendLong) {
  47   CharVector v;
  48   ASSERT_EQ(v.length(), size_t(0));
  49
  50   // 1000 characters
  51   static constexpr char test_str[] =
  52       "12345678901234567890123456789012345678901234567890"
  53       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  54       "12345678901234567890123456789012345678901234567890"
  55       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  56       "12345678901234567890123456789012345678901234567890"
  57       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  58       "12345678901234567890123456789012345678901234567890"
  59       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  60       "12345678901234567890123456789012345678901234567890"
  61       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  62       "12345678901234567890123456789012345678901234567890"
  63       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  64       "12345678901234567890123456789012345678901234567890"
  65       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  66       "12345678901234567890123456789012345678901234567890"
  67       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  68       "12345678901234567890123456789012345678901234567890"
  69       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy"
  70       "12345678901234567890123456789012345678901234567890"
  71       "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxy";
  72   for (size_t i = 0; test_str[i] != '\0'; ++i) {
  73     ASSERT_EQ(v.length(), i);
  74     ASSERT_TRUE(v.append(test_str[i]));
  75   }
  76   ASSERT_EQ(v.length(), size_t(1000));
  77   ASSERT_STREQ(v.c_str(), test_str);
  78 }