Test that Regex can be copied and moved

test/regex/CMakeLists.txt

@@ -3,7 +3,8 @@ sourcemeta_googletest(NAMESPACE sourcemeta PROJECT core NAME regex
     regex_matches_if_valid_test.cc
     regex_matches_ecma262_test.cc
     regex_matches_rfc9485_test.cc
-    regex_to_regex_test.cc)
+    regex_to_regex_test.cc
+    regex_test.cc)
 
 target_link_libraries(sourcemeta_core_regex_unit
   PRIVATE sourcemeta::core::regex)

test/regex/regex_test.cc

@@ -0,0 +1,39 @@
+#include <gtest/gtest.h>
+
+#include <sourcemeta/core/regex.h>
+
+#include <utility> // std::move
+
+TEST(Regex, copy_construct) {
+  const auto regex{sourcemeta::core::to_regex("^foo")};
+  EXPECT_TRUE(regex.has_value());
+  const sourcemeta::core::Regex copy{regex.value()};
+  EXPECT_TRUE(sourcemeta::core::matches(copy, "foo bar"));
+  EXPECT_FALSE(sourcemeta::core::matches(copy, "bar foo"));
+}
+
+TEST(Regex, copy_assign) {
+  const auto regex{sourcemeta::core::to_regex("^foo")};
+  EXPECT_TRUE(regex.has_value());
+  sourcemeta::core::Regex copy{sourcemeta::core::RegexTypeNoop{}};
+  copy = regex.value();
+  EXPECT_TRUE(sourcemeta::core::matches(copy, "foo bar"));
+  EXPECT_FALSE(sourcemeta::core::matches(copy, "bar foo"));
+}
+
+TEST(Regex, move_construct) {
+  auto regex{sourcemeta::core::to_regex("^foo")};
+  EXPECT_TRUE(regex.has_value());
+  const sourcemeta::core::Regex moved{std::move(regex).value()};
+  EXPECT_TRUE(sourcemeta::core::matches(moved, "foo bar"));
+  EXPECT_FALSE(sourcemeta::core::matches(moved, "bar foo"));
+}
+
+TEST(Regex, move_assign) {
+  auto regex{sourcemeta::core::to_regex("^foo")};
+  EXPECT_TRUE(regex.has_value());
+  sourcemeta::core::Regex moved{sourcemeta::core::RegexTypeNoop{}};
+  moved = std::move(regex).value();
+  EXPECT_TRUE(sourcemeta::core::matches(moved, "foo bar"));
+  EXPECT_FALSE(sourcemeta::core::matches(moved, "bar foo"));
+}