1 files changed, 38 insertions, 0 deletions
diff --git a/toolsrc/src/tests.strings.cpp b/toolsrc/src/tests.strings.cpp
new file mode 100644
index 000000000..14b449e86
--- /dev/null
+++ b/toolsrc/src/tests.strings.cpp
@@ -0,0 +1,38 @@
+#include "tests.pch.h"
+
+#include <vcpkg/base/strings.h>
+
+#include <cstdint>
+#include <utility>
+#include <vector>
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace UnitTest1 {
+    class StringsTest : public TestClass<StringsTest> {
+        TEST_METHOD(b64url_encode)
+        {
+            using u64 = std::uint64_t;
+
+            std::vector<std::pair<std::uint64_t, std::string>> map;
+
+            map.emplace_back(0, "AAAAAAAAAAA");
+            map.emplace_back(1, "BAAAAAAAAAA");
+
+            map.emplace_back(u64(1) << 32, "AAAAAEAAAAA");
+            map.emplace_back((u64(1) << 32) + 1, "BAAAAEAAAAA");
+
+            map.emplace_back(0xE4D0'1065'D11E'0229, "pIgHRXGEQTO");
+            map.emplace_back(0xA626'FE45'B135'07FF, "_fQNxWk_mYK");
+            map.emplace_back(0xEE36'D228'0C31'D405, "FQdMMgi024O");
+            map.emplace_back(0x1405'64E7'FE7E'A88C, "Miqf-fOZFQB");
+            map.emplace_back(0xFFFF'FFFF'FFFF'FFFF, "__________P");
+
+            std::string result;
+            for (const auto& pr : map) {
+                result = vcpkg::Strings::b64url_encode(pr.first);
+                Assert::AreEqual(result, pr.second);
+            }
+        }
+    };
+}