1 files changed, 112 insertions, 0 deletions
diff --git a/test/base/StringTest.cpp b/test/base/StringTest.cpp
new file mode 100644
index 00000000..9ed351e5
--- /dev/null
+++ b/test/base/StringTest.cpp
@@ -0,0 +1,112 @@
+#include "cru/base/Format.h"
+#include "cru/base/String.h"
+
+#include <catch2/catch_test_macros.hpp>
+
+TEST_CASE("String Append", "[string]") {
+  using cru::String;
+
+  String s;
+  s.append(u"ha");
+  s.append(s);
+  REQUIRE(s == String(u"haha"));
+}
+
+TEST_CASE("String IndexConvert", "[string]") {
+  using cru::String;
+
+  String s(u"123");
+  REQUIRE(s.IndexFromCodePointToCodeUnit(1) == 1);
+  REQUIRE(s.IndexFromCodeUnitToCodePoint(1) == 1);
+  REQUIRE(s.IndexFromCodeUnitToCodePoint(3) == 3);
+  REQUIRE(s.IndexFromCodeUnitToCodePoint(3) == 3);
+}
+
+TEST_CASE("String Format", "[string]") {
+  using cru::Format;
+  using cru::String;
+
+  REQUIRE(Format(u"{} + {} = {}", 123, 321, 444) == String(u"123 + 321 = 444"));
+}
+
+TEST_CASE("String Trim", "[string]") {
+  using cru::String;
+  REQUIRE(String(u"  abc  ").Trim() == u"abc");
+}
+
+TEST_CASE("String SplitToLines", "[string]") {
+  using cru::String;
+
+  String s(u"abc\ndef\nghi");
+  auto lines = s.SplitToLines();
+  REQUIRE(lines.size() == 3);
+  REQUIRE(lines[0] == String(u"abc"));
+  REQUIRE(lines[1] == String(u"def"));
+  REQUIRE(lines[2] == String(u"ghi"));
+}
+
+TEST_CASE("String SplitToLinesWithEmptyLine", "[string]") {
+  using cru::String;
+
+  String s(u"abc\n   \ndef\n\nghi\n");
+  auto lines = s.SplitToLines();
+  REQUIRE(lines.size() == 6);
+  REQUIRE(lines[0] == String(u"abc"));
+  REQUIRE(lines[1] == String(u"   "));
+  REQUIRE(lines[2] == String(u"def"));
+  REQUIRE(lines[3] == String(u""));
+  REQUIRE(lines[4] == String(u"ghi"));
+  REQUIRE(lines[5] == String(u""));
+}
+
+TEST_CASE("String SplitToLinesRemoveSpaceLine", "[string]") {
+  using cru::String;
+
+  String s(u"abc\n   \ndef\n\nghi\n");
+  auto lines = s.SplitToLines(true);
+  REQUIRE(lines.size() == 3);
+  REQUIRE(lines[0] == String(u"abc"));
+  REQUIRE(lines[1] == String(u"def"));
+  REQUIRE(lines[2] == String(u"ghi"));
+}
+
+TEST_CASE("StringView ToUtf8", "[string]") {
+  using cru::StringView;
+  StringView utf16_text = u"aπ你🤣!";
+  std::string_view utf8_text = "aπ你🤣!";
+
+  REQUIRE(utf16_text.ToUtf8() == utf8_text);
+}
+
+TEST_CASE("String FromUtf8", "[string]") {
+  std::u16string_view utf16_text = u"aπ你🤣!";
+  std::string_view utf8_text = "aπ你🤣!";
+
+  REQUIRE(cru::String::FromUtf8(utf8_text) == utf16_text);
+}
+
+TEST_CASE("StringView ParseToDouble", "[string]") {
+  using cru::StringToNumberFlags;
+  using cru::StringView;
+  REQUIRE(StringView(u"3.14159").ParseToDouble() == 3.14159);
+  REQUIRE(
+      StringView(u"   3.14159")
+          .ParseToDouble(nullptr, StringToNumberFlags::kAllowLeadingSpaces) ==
+      3.14159);
+  REQUIRE(StringView(u"   3.14159    ")
+              .ParseToDouble(nullptr,
+                             StringToNumberFlags::kAllowLeadingSpaces |
+                                 StringToNumberFlags::kAllowTrailingSpaces) ==
+          3.14159);
+}
+
+TEST_CASE("String ParseToDoubleList", "[string]") {
+  using cru::StringView;
+
+  auto list = StringView(u" 1.23 2.34 3.45 ").ParseToDoubleList();
+
+  REQUIRE(list.size() == 3);
+  REQUIRE(list[0] == 1.23);
+  REQUIRE(list[1] == 2.34);
+  REQUIRE(list[2] == 3.45);
+}