test/libapt/stringview_test.cc

   1 #if !(defined APT_PKG_EXPOSE_STRING_VIEW)
   2         #define APT_PKG_EXPOSE_STRING_VIEW
   3 #endif
   4
   5 #include <config.h>
   6 #include <apt-pkg/string_view.h>
   7 #include <string>
   8
   9 #include <type_traits>
  10
  11 #include <gtest/gtest.h>
  12
  13 TEST(StringViewTest,EmptyString)
  14 {
  15    constexpr APT::StringView defString;
  16    static_assert( 0 == defString.length(), "def right size");
  17
  18    APT::StringView strString{std::string{}};
  19    EXPECT_EQ(0, strString.length());
  20
  21    constexpr char const * const charp = "";
  22    constexpr APT::StringView charpString{charp, 0};
  23    static_assert( 0 == charpString.length(), "charp right size");
  24
  25    APT::StringView charp2String{charp};
  26    EXPECT_EQ(0, strString.length());
  27
  28    const APT::StringView charaString{""};
  29    EXPECT_EQ(0, charaString.length());
  30
  31    EXPECT_TRUE(APT::StringView("") == "");
  32    EXPECT_FALSE(APT::StringView("") != "");
  33 }
  34
  35 TEST(StringViewTest,FooString)
  36 {
  37    constexpr APT::StringView defString("foo", 3);
  38    static_assert( 3 == defString.length(), "def right size");
  39    EXPECT_EQ(defString.to_string(), defString.data());
  40
  41    APT::StringView strString{std::string{"foo"}};
  42    EXPECT_EQ(3, strString.length());
  43    EXPECT_EQ(strString.to_string(), strString.data());
  44
  45    constexpr char const * const charp = "foo";
  46    constexpr APT::StringView charpString{charp, 3};
  47    EXPECT_EQ( 3, charpString.length());
  48    EXPECT_EQ(charpString.to_string(), charpString.data());
  49
  50    APT::StringView charp2String{charp};
  51    EXPECT_EQ(3, charp2String.length());
  52    EXPECT_EQ(charp2String.to_string(), charp2String.data());
  53
  54    const APT::StringView charaString{"foo"};
  55    EXPECT_EQ(3, charaString.length());
  56    EXPECT_EQ(charaString.to_string(), charaString.data());
  57
  58    EXPECT_TRUE(APT::StringView("foo") == "foo");
  59    EXPECT_FALSE(APT::StringView("foo") != "foo");
  60 }
  61
  62 TEST(StringViewTest,SubStr)
  63 {
  64    const APT::StringView defString("Hello World!");
  65    EXPECT_EQ(defString.to_string().substr(6), defString.substr(6).to_string());
  66    EXPECT_EQ(defString.to_string().substr(0,5), defString.substr(0,5).to_string());
  67    EXPECT_EQ(defString.to_string().substr(6,5), defString.substr(6,5).to_string());
  68 }
  69
  70 TEST(StringViewTest,Find)
  71 {
  72    const APT::StringView defString("Hello World!");
  73    EXPECT_EQ(defString.to_string().find('l'), defString.find('l'));
  74    EXPECT_EQ(defString.to_string().find('X'), defString.find('X'));
  75    EXPECT_EQ(defString.to_string().find('e',3), defString.find('e',3));
  76    EXPECT_EQ(defString.to_string().find('l',6), defString.find('l',6));
  77    EXPECT_EQ(defString.to_string().find('l',11), defString.find('l',11));
  78 }
  79
  80 TEST(StringViewTest,RFind)
  81 {
  82    const APT::StringView defString("Hello World!");
  83    EXPECT_EQ(defString.to_string().rfind('l'), defString.rfind('l'));
  84    EXPECT_EQ(defString.to_string().rfind('X'), defString.rfind('X'));
  85    EXPECT_EQ(defString.to_string().rfind('e',3), defString.rfind('e',3));
  86    EXPECT_EQ(defString.to_string().rfind('l',6), defString.rfind('l',6));
  87    EXPECT_EQ(defString.to_string().rfind('l',11), defString.rfind('l',11));
  88 }