[libc-commits] [libc] [libc] Implement entrypoint and test of iswupper function (PR #185215)

[Michael Jones via libc-commits]

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@@ -0,0 +1,54 @@
+//===-- Unittests for iswupper --------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/__support/CPP/span.h"
+#include "src/wctype/iswupper.h"
+
+#include "test/UnitTest/Test.h"
+
+TEST(LlvmLibciswupper, SimpleTest) {
+  EXPECT_NE(LIBC_NAMESPACE::iswupper('B'), 0);
+
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper('a'), 0);
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper('3'), 0);
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper(' '), 0);
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper('?'), 0);
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper('\0'), 0);
+  EXPECT_EQ(LIBC_NAMESPACE::iswupper(-1), 0);
+}
+
+// TODO: once iswupper supports more than just ascii-range characters add a
----------------
michaelrj-google wrote:

iswupper does support more than the ascii range. Currently the tests for the extended range are in https://github.com/llvm/llvm-project/blob/main/libc/test/src/__support/wctype_utils_test.cpp. I'd recommend changing this comment to point to there.

https://github.com/llvm/llvm-project/pull/185215