From fa37dc67546db83520620ec00edb5e2a35bb40bb Mon Sep 17 00:00:00 2001
From: Oliver Hamlet <oliver.hamlet@gmail.com>
Date: Tue, 28 Aug 2018 18:40:24 +0100
Subject: [PATCH] Add more tests to verify std::filesystem behaviour

---
 src/tests/api/internals/main.cpp | 60 ++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/src/tests/api/internals/main.cpp b/src/tests/api/internals/main.cpp
index 60ea14cc..5074ba32 100644
--- a/src/tests/api/internals/main.cpp
+++ b/src/tests/api/internals/main.cpp
@@ -151,6 +151,66 @@ TEST(Filesystem, shouldBeAbleToWriteToAndReadFromAUtf8Path) {
   std::filesystem::remove(path);
 }
 
+TEST(Filesystem, equalityShouldBeCaseSensitive) {
+  auto upper = std::filesystem::path("LICENSE");
+  auto lower = std::filesystem::path("license");
+
+  EXPECT_NE(lower, upper);
+}
+
+#ifdef _WIN32
+TEST(Filesystem, equivalentShouldRequireThatBothPathsExist) {
+  auto upper = std::filesystem::path("LICENSE");
+  auto lower = std::filesystem::path("license2");
+
+  EXPECT_THROW(std::filesystem::equivalent(lower, upper), std::filesystem::filesystem_error);
+}
+#else
+TEST(Filesystem, equivalentShouldNotRequireThatBothPathsExist) {
+  auto upper = std::filesystem::path("LICENSE");
+  auto lower = std::filesystem::path("license2");
+
+  EXPECT_FALSE(std::filesystem::equivalent(lower, upper));
+}
+#endif
+
+TEST(Filesystem, canonicalShouldRequireThatThePathExists) {
+  EXPECT_THROW(std::filesystem::canonical("license2"), std::filesystem::filesystem_error);
+}
+
+#ifdef _WIN32
+TEST(Filesystem, equivalentShouldBeCaseInsensitive) {
+  auto upper = std::filesystem::path("LICENSE");
+  auto lower = std::filesystem::path("license");
+
+  EXPECT_TRUE(std::filesystem::equivalent(lower, upper));
+}
+
+TEST(Filesystem, canonicalShouldFoldCase) {
+  auto upper = std::filesystem::canonical("LICENSE");
+  auto lower = std::filesystem::canonical("license");
+
+  EXPECT_EQ(lower, upper);
+}
+#else
+TEST(Filesystem, equivalentShouldBeCaseSensitive) {
+  auto upper = std::filesystem::path("LICENSE");
+  auto lower = std::filesystem::path("license");
+
+  EXPECT_FALSE(std::filesystem::equivalent(lower, upper));
+}
+
+TEST(Filesystem, canonicalShouldNotFoldCase) {
+  std::ofstream out("license");
+  out.close();
+
+  auto upper = std::filesystem::canonical("LICENSE");
+  auto lower = std::filesystem::canonical("license");
+
+  EXPECT_NE(lower, upper);
+}
+#endif
+
 int main(int argc, char **argv) {
   // Set the locale to get encoding conversions working correctly.
   std::locale::global(boost::locale::generator().generate(""));