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1 files changed, 53 insertions, 0 deletions

diff --git a/test/win/String.cpp b/test/win/String.cpp
new file mode 100644
index 00000000..a666dc81
--- /dev/null
+++ b/test/win/String.cpp
@@ -0,0 +1,53 @@
+#include "cru/win/String.hpp"
+
+#include <gtest/gtest.h>
+
+using cru::platform::win::k_code_point_end;
+
+TEST(WinString, Utf8Iterator) {
+  using cru::platform::win::Utf8Iterator;
+  std::string_view text = "aπ你🤣!";
+  Utf8Iterator i{text};
+  ASSERT_EQ(i.Next(), 0x0061);
+  ASSERT_EQ(i.Next(), 0x03C0);
+  ASSERT_EQ(i.Next(), 0x4F60);
+  ASSERT_EQ(i.Next(), 0x1F923);
+  ASSERT_EQ(i.Next(), 0x0021);
+  ASSERT_EQ(i.Next(), k_code_point_end);
+}
+
+TEST(WinString, Utf16Iterator) {
+  using cru::platform::win::Utf16Iterator;
+  std::wstring_view text = L"aπ你🤣!";
+  Utf16Iterator i{text};
+  ASSERT_EQ(i.Next(), 0x0061);
+  ASSERT_EQ(i.Next(), 0x03C0);
+  ASSERT_EQ(i.Next(), 0x4F60);
+  ASSERT_EQ(i.Next(), 0x1F923);
+  ASSERT_EQ(i.Next(), 0x0021);
+  ASSERT_EQ(i.Next(), k_code_point_end);
+}
+
+TEST(WinString, IndexUtf8ToUtf16) {
+  using cru::platform::win::IndexUtf8ToUtf16;
+  std::string_view utf8_string = "aπ你🤣!";
+  std::wstring_view utf16_string = L"aπ你🤣!";
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 0, utf16_string), 0);
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 1, utf16_string), 1);
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 3, utf16_string), 2);
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 6, utf16_string), 3);
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 10, utf16_string), 5);
+  ASSERT_EQ(IndexUtf8ToUtf16(utf8_string, 11, utf16_string), 6);
+}
+
+TEST(WinString, IndexUtf16ToUtf8) {
+  using cru::platform::win::IndexUtf16ToUtf8;
+  std::string_view utf8_string = "aπ你🤣!";
+  std::wstring_view utf16_string = L"aπ你🤣!";
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 0, utf8_string), 0);
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 1, utf8_string), 1);
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 2, utf8_string), 3);
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 3, utf8_string), 6);
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 5, utf8_string), 10);
+  ASSERT_EQ(IndexUtf16ToUtf8(utf16_string, 6, utf8_string), 11);
+}