Pull in full sqlite_modern_cpp repo for the license as it is not attached to source files

common/sqlite_modern_cpp/tests/flags.cc

@@ -0,0 +1,80 @@
+#include <iostream>
+#include <cstdio>
+#include <cstdlib>
+#include <sqlite_modern_cpp.h>
+#include <sys/types.h>
+#include <catch2/catch.hpp>
+using namespace sqlite;
+using namespace std;
+
+struct TmpFile {
+	string fname;
+
+	TmpFile(): fname("./flags.db") { }
+	~TmpFile() { remove(fname.c_str()); }
+};
+#ifdef _WIN32
+#define OUR_UTF16 "UTF-16le"
+#elif BYTE_ORDER == BIG_ENDIAN
+#define OUR_UTF16 "UTF-16be"
+#else
+#define OUR_UTF16 "UTF-16le"
+#endif
+
+TEST_CASE("flags work", "[flags]") {
+    TmpFile file;
+    sqlite::sqlite_config cfg;
+    std::string enc;
+    SECTION("PRAGMA endcoding is UTF-8 for string literals") {
+        database db(":memory:", cfg);
+        db << "PRAGMA encoding;" >> enc;
+        REQUIRE(enc == "UTF-8"); 
+    }
+    SECTION("encoding is UTF-16 for u"" prefixed string literals") {
+        database db(u":memory:", cfg);
+        db << "PRAGMA encoding;" >> enc;
+        REQUIRE(enc == OUR_UTF16); 
+    }
+    SECTION("we can set encoding to UTF-8 with flags") {
+        cfg.encoding = Encoding::UTF8;
+        database db(u":memory:", cfg);
+        db << "PRAGMA encoding;" >> enc;
+        REQUIRE(enc == "UTF-8"); 
+    }
+    SECTION("we can set encoding to UTF-16 with flags") {
+        cfg.encoding = Encoding::UTF16;
+        database db(u":memory:", cfg);
+        db << "PRAGMA encoding;" >> enc;
+        REQUIRE(enc == OUR_UTF16); 
+    }
+    SECTION("we can set encoding to UTF-16 with flags for on disk databases") {
+        cfg.encoding = Encoding::UTF16;
+        database db(file.fname, cfg);
+        db << "PRAGMA encoding;" >> enc;
+        REQUIRE(enc == OUR_UTF16); 
+
+    }
+    SECTION("READONLY flag works") {
+        {
+            database db(file.fname, cfg);
+            db << "CREATE TABLE foo (a string);";
+            db << "INSERT INTO foo VALUES (?)" << "hello";
+        }
+
+        cfg.flags = sqlite::OpenFlags::READONLY;
+        database db(file.fname, cfg);
+
+        string str;
+        db << "SELECT a FROM foo;" >> str;
+
+        REQUIRE(str == "hello");
+
+        bool failed = false;
+        try {
+            db << "INSERT INTO foo VALUES (?)" << "invalid";
+        } catch(errors::readonly&) {
+            failed = true;
+        }
+        REQUIRE(failed == true);
+    }
+}