diff --git a/include/boost/mysql/field.hpp b/include/boost/mysql/field.hpp
index 5e888727..ffb89682 100644
--- a/include/boost/mysql/field.hpp
+++ b/include/boost/mysql/field.hpp
@@ -30,7 +30,7 @@ public:
     field& operator=(field&&) = default;
     ~field() = default;
 
-    field(std::nullptr_t) noexcept : repr_(null_t()) {}
+    explicit field(std::nullptr_t) noexcept : repr_(null_t()) {}
     field(signed char v) noexcept : repr_(std::int64_t(v)) {}
     field(short v) noexcept : repr_(std::int64_t(v)) {}
     field(int v) noexcept : repr_(std::int64_t(v)) {}
@@ -41,7 +41,7 @@ public:
     field(unsigned int v) noexcept : repr_(std::uint64_t(v)) {}
     field(unsigned long v) noexcept : repr_(std::uint64_t(v)) {}
     field(unsigned long long v) noexcept : repr_(std::uint64_t(v)) {}
-    field(std::string&& v) noexcept : repr_(std::move(v)) {}
+    field(std::string v) noexcept : repr_(std::move(v)) {}
     field(float v) noexcept : repr_(v) {}
     field(double v) noexcept : repr_(v) {}
     field(const date& v) noexcept : repr_(v) {}
@@ -60,7 +60,7 @@ public:
     field& operator=(unsigned int v) noexcept { repr_.emplace<std::uint64_t>(v); return *this; }
     field& operator=(unsigned long v) noexcept { repr_.emplace<std::uint64_t>(v); return *this; }
     field& operator=(unsigned long long v) noexcept { repr_.emplace<std::uint64_t>(v); return *this; }
-    field& operator=(std::string&& v) { repr_.emplace<std::string>(std::move(v)); return *this; }
+    field& operator=(std::string v) { repr_.emplace<std::string>(std::move(v)); return *this; }
     field& operator=(float v) noexcept { repr_.emplace<float>(v); return *this; }
     field& operator=(double v) noexcept { repr_.emplace<double>(v); return *this; }
     field& operator=(const date& v) noexcept { repr_.emplace<date>(v); return *this; }
@@ -98,7 +98,6 @@ public:
     datetime* if_datetime() noexcept { return boost::variant2::get_if<datetime>(&repr_); }
     time* if_time() noexcept { return boost::variant2::get_if<time>(&repr_); }
 
-
     const std::int64_t& as_int64() const { return internal_as<std::int64_t>(); }
     const std::uint64_t& as_uint64() const { return internal_as<std::uint64_t>(); }
     const std::string& as_string() const { return internal_as<std::string>(); }
diff --git a/include/boost/mysql/field_view.hpp b/include/boost/mysql/field_view.hpp
index 0a750c59..b614d96e 100644
--- a/include/boost/mysql/field_view.hpp
+++ b/include/boost/mysql/field_view.hpp
@@ -89,7 +89,7 @@ public:
       * Caution: `value(NULL)` will __NOT__ match this overload. It will try to construct
       * a `boost::string_view` from a NULL C string, causing undefined behavior.
       */
-    BOOST_CXX14_CONSTEXPR field_view(std::nullptr_t) noexcept : repr_(null_t()) {}
+    BOOST_CXX14_CONSTEXPR explicit field_view(std::nullptr_t) noexcept : repr_(null_t()) {}
 
     BOOST_CXX14_CONSTEXPR field_view(signed char v) noexcept : repr_(std::int64_t(v)) {}
     BOOST_CXX14_CONSTEXPR field_view(short v) noexcept : repr_(std::int64_t(v)) {}
@@ -111,7 +111,7 @@ public:
     BOOST_CXX14_CONSTEXPR field_view(const time& v) noexcept : repr_(v) {}
 
     // TODO: hide this
-    BOOST_CXX14_CONSTEXPR field_view(detail::string_view_offset v) noexcept : repr_(v) {}
+    BOOST_CXX14_CONSTEXPR explicit field_view(detail::string_view_offset v) noexcept : repr_(v) {}
 
     BOOST_CXX14_CONSTEXPR inline field_kind kind() const noexcept;
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 37bd14b5..413e2ccf 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -47,6 +47,7 @@ add_executable(
     # unit/detail/protocol/row_deserialization.cpp
 
     unit/field_view.cpp
+    unit/field.cpp
 
     # unit/metadata.cpp
     # unit/value_constexpr.cpp
diff --git a/test/unit/field.cpp b/test/unit/field.cpp
new file mode 100644
index 00000000..80e39850
--- /dev/null
+++ b/test/unit/field.cpp
@@ -0,0 +1,1037 @@
+//
+// Copyright (c) 2019-2022 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/mysql/field.hpp>
+#include <boost/test/tools/context.hpp>
+#include <boost/test/unit_test_suite.hpp>
+#include <cstddef>
+#include <cstdint>
+#include <sstream>
+#include "test_common.hpp"
+
+BOOST_TEST_DONT_PRINT_LOG_VALUE(boost::mysql::date)
+BOOST_TEST_DONT_PRINT_LOG_VALUE(boost::mysql::datetime)
+BOOST_TEST_DONT_PRINT_LOG_VALUE(boost::mysql::time)
+
+using namespace boost::mysql::test;
+using boost::mysql::field;
+using boost::mysql::field_kind;
+
+namespace
+{
+
+BOOST_AUTO_TEST_SUITE(test_field)
+
+BOOST_AUTO_TEST_SUITE(constructors)
+
+BOOST_AUTO_TEST_CASE(default_constructor)
+{
+    field v;
+    BOOST_TEST(v.is_null());
+}
+
+BOOST_AUTO_TEST_CASE(copy_scalar)
+{
+    field v (42);
+    field v2 (v);
+    BOOST_TEST(v2.as_int64() == 42);
+}
+
+BOOST_AUTO_TEST_CASE(copy_string)
+{
+    std::string s ("test");
+    field v (s);
+    field v2 (v);
+    BOOST_TEST(v2.as_string() == "test");
+
+    // Changing the value of v doesn't affect v2
+    v = "other";
+    BOOST_TEST(v2.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(move)
+{
+    field v (field("test"));
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_nullptr)
+{
+    field v(nullptr);
+    BOOST_TEST(v.is_null());
+}
+
+BOOST_AUTO_TEST_CASE(from_u8)
+{
+    field v(std::uint8_t(0xfe));
+    BOOST_TEST(v.as_uint64() == 0xfe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u16)
+{
+    field v(std::uint16_t(0xfefe));
+    BOOST_TEST(v.as_uint64() == 0xfefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u32)
+{
+    field v(std::uint32_t(0xfefefefe));
+    BOOST_TEST(v.as_uint64() == 0xfefefefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u64)
+{
+    field v(std::uint64_t(0xfefefefefefefefe));
+    BOOST_TEST(v.as_uint64() == 0xfefefefefefefefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_s8)
+{
+    field v(std::int8_t(-1));
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s16)
+{
+    field v(std::int16_t(-1));
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s32)
+{
+    field v(std::int32_t(-1));
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s64)
+{
+    field v(std::int64_t(-1));
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_char_array)
+{
+    field v("test");
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_c_str)
+{
+    const char* str = "test";
+    field v(str);
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_view)
+{
+    boost::string_view sv ("test123", 4);
+    field v(sv);
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_rvalue)
+{
+    field v(std::string("test"));
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_lvalue)
+{
+    std::string s ("test");
+    field v(s);
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_float)
+{
+    field v(4.2f);
+    BOOST_TEST(v.as_float() == 4.2f);
+}
+
+BOOST_AUTO_TEST_CASE(from_double)
+{
+    field v(4.2);
+    BOOST_TEST(v.as_double() == 4.2);
+}
+
+BOOST_AUTO_TEST_CASE(from_date)
+{
+    auto d = makedate(2022, 4, 1);
+    field v (d);
+    BOOST_TEST(v.as_date() == d);
+}
+
+BOOST_AUTO_TEST_CASE(from_datetime)
+{
+    auto d = makedt(2022, 4, 1, 21);
+    field v (d);
+    BOOST_TEST(v.as_datetime() == d);
+}
+
+BOOST_AUTO_TEST_CASE(from_time)
+{
+    auto t = maket(20, 10, 1);
+    field v (t);
+    BOOST_TEST(v.as_time() == t);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+
+
+BOOST_AUTO_TEST_SUITE(assignment)
+
+BOOST_AUTO_TEST_CASE(copy_scalar)
+{
+    field v (42);
+    field v2 (5.6);
+    v = v2;
+    BOOST_TEST(v.as_double() == 5.6);
+}
+
+BOOST_AUTO_TEST_CASE(copy_string)
+{
+    field v (42);
+    field v2 ("test");
+    v = v2;
+    BOOST_TEST(v.as_string() == "test");
+
+    // Changing the value of v2 doesn't affect v
+    v2.as_string() = "other";
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(move)
+{
+    field v (42);
+    field v2 ("test");
+    v = std::move(v2);
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_nullptr)
+{
+    field v(42);
+    v = nullptr;
+    BOOST_TEST(v.is_null());
+}
+
+BOOST_AUTO_TEST_CASE(from_u8)
+{
+    field v(9.2f);
+    v = std::uint8_t(0xfe);
+    BOOST_TEST(v.as_uint64() == 0xfe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u16)
+{
+    field v(9.2f);
+    v = std::uint16_t(0xfefe);
+    BOOST_TEST(v.as_uint64() == 0xfefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u32)
+{
+    field v(9.2f);
+    v = std::uint32_t(0xfefefefe);
+    BOOST_TEST(v.as_uint64() == 0xfefefefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_u64)
+{
+    field v(9.2f);
+    v = std::uint64_t(0xfefefefefefefefe);
+    BOOST_TEST(v.as_uint64() == 0xfefefefefefefefe);
+}
+
+BOOST_AUTO_TEST_CASE(from_s8)
+{
+    field v (9.2f);
+    v = std::int8_t(-1);
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s16)
+{
+    field v (9.2f);
+    v = std::int16_t(-1);
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s32)
+{
+    field v (9.2f);
+    v = std::int32_t(-1);
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_s64)
+{
+    field v (9.2f);
+    v = std::int64_t(-1);
+    BOOST_TEST(v.as_int64() == -1);
+}
+
+BOOST_AUTO_TEST_CASE(from_char_array)
+{
+    field v (9.2f);
+    v = "test";
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_c_str)
+{
+    const char* str = "test";
+    field v (9.2f);
+    v = str;
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_view)
+{
+    boost::string_view sv ("test123", 4);
+    field v (9.2f);
+    v = sv;
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_rvalue)
+{
+    field v (9.2f);
+    v = std::string("test");
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_string_lvalue)
+{
+    std::string s ("test");
+    field v (9.2f);
+    v = s;
+    BOOST_TEST(v.as_string() == "test");
+}
+
+BOOST_AUTO_TEST_CASE(from_float)
+{
+    field v ("test");
+    v = 4.2f;
+    BOOST_TEST(v.as_float() == 4.2f);
+}
+
+BOOST_AUTO_TEST_CASE(from_double)
+{
+    field v ("test");
+    v = 4.2;
+    BOOST_TEST(v.as_double() == 4.2);
+}
+
+BOOST_AUTO_TEST_CASE(from_date)
+{
+    auto d = makedate(2022, 4, 1);
+    field v ("test");
+    v = d;
+    BOOST_TEST(v.as_date() == d);
+}
+
+BOOST_AUTO_TEST_CASE(from_datetime)
+{
+    auto d = makedt(2022, 4, 1, 21);
+    field v ("test");
+    v = d;
+    BOOST_TEST(v.as_datetime() == d);
+}
+
+BOOST_AUTO_TEST_CASE(from_time)
+{
+    auto t = maket(20, 10, 1);
+    field v ("test");
+    v = t;
+    BOOST_TEST(v.as_time() == t);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+
+BOOST_AUTO_TEST_SUITE(accesors)
+
+struct
+{
+    const char* name;
+    const field f;
+    field_kind expected_kind;
+    bool is_null, is_int64, is_uint64, is_string, is_float, is_double, is_date, is_datetime, is_time;
+} test_cases [] = {
+    // name       field                             kind                  null,  i64    u64    str    float  double date   dt    time 
+    { "null",     field(),                     field_kind::null,     true,  false, false, false, false, false, false, false, false },
+    { "int64",    field(42),                   field_kind::int64,    false, true,  false, false, false, false, false, false, false },
+    { "uint64",   field(42u),                  field_kind::uint64,   false, false, true,  false, false, false, false, false, false },
+    { "string",   field("test"),               field_kind::string,   false, false, false, true,  false, false, false, false, false },
+    { "float",    field(4.2f),                 field_kind::float_,   false, false, false, false, true,  false, false, false, false },
+    { "double",   field(4.2),                  field_kind::double_,  false, false, false, false, false, true,  false, false, false },
+    { "date",     field(makedate(2020, 1, 1)), field_kind::date,     false, false, false, false, false, false, true,  false, false },
+    { "datetime", field(makedt(2020, 1, 1)),   field_kind::datetime, false, false, false, false, false, false, false, true,  false },
+    { "time",     field(maket(20, 1, 1)),      field_kind::time,     false, false, false, false, false, false, false, false, true },
+};
+
+BOOST_AUTO_TEST_CASE(kind)
+{
+    for (const auto& tc : test_cases)
+    {
+        BOOST_TEST(tc.f.kind() == tc.expected_kind, tc.name);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(is)
+{
+    for (const auto& tc : test_cases)
+    {
+        BOOST_TEST_CONTEXT(tc.name)
+        {
+            BOOST_TEST(tc.f.is_null() == tc.is_null);
+            BOOST_TEST(tc.f.is_int64() == tc.is_int64);
+            BOOST_TEST(tc.f.is_uint64() == tc.is_uint64);
+            BOOST_TEST(tc.f.is_string() == tc.is_string);
+            BOOST_TEST(tc.f.is_float() == tc.is_float);
+            BOOST_TEST(tc.f.is_double() == tc.is_double);
+            BOOST_TEST(tc.f.is_date() == tc.is_date);
+            BOOST_TEST(tc.f.is_datetime() == tc.is_datetime);
+            BOOST_TEST(tc.f.is_time() == tc.is_time);
+        }
+    }
+}
+
+// We check both const and non-const versions
+BOOST_AUTO_TEST_CASE(if_pointer_validity)
+{
+    for (const auto& tc : test_cases)
+    {
+        BOOST_TEST_CONTEXT(tc.name)
+        {
+            if (tc.is_int64)
+            {
+                BOOST_TEST(tc.f.if_int64() != nullptr);
+                BOOST_TEST(field(tc.f).if_int64() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_int64() == nullptr);
+                BOOST_TEST(field(tc.f).if_int64() == nullptr);
+            }
+
+            if (tc.is_uint64)
+            {
+                BOOST_TEST(tc.f.if_uint64() != nullptr);
+                BOOST_TEST(field(tc.f).if_uint64() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_uint64() == nullptr);
+                BOOST_TEST(field(tc.f).if_uint64() == nullptr);
+            }
+
+            if (tc.is_string)
+            {
+                BOOST_TEST(tc.f.if_string() != nullptr);
+                BOOST_TEST(field(tc.f).if_string() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_string() == nullptr);
+                BOOST_TEST(field(tc.f).if_string() == nullptr);
+            }
+
+            if (tc.is_float)
+            {
+                BOOST_TEST(tc.f.if_float() != nullptr);
+                BOOST_TEST(field(tc.f).if_float() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_float() == nullptr);
+                BOOST_TEST(field(tc.f).if_float() == nullptr);
+            }
+
+            if (tc.is_double)
+            {
+                BOOST_TEST(tc.f.if_double() != nullptr);
+                BOOST_TEST(field(tc.f).if_double() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_double() == nullptr);
+                BOOST_TEST(field(tc.f).if_double() == nullptr);
+            }
+
+            if (tc.is_date)
+            {
+                BOOST_TEST(tc.f.if_date() != nullptr);
+                BOOST_TEST(field(tc.f).if_date() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_date() == nullptr);
+                BOOST_TEST(field(tc.f).if_date() == nullptr);
+            }
+
+            if (tc.is_datetime)
+            {
+                BOOST_TEST(tc.f.if_datetime() != nullptr);
+                BOOST_TEST(field(tc.f).if_datetime() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_datetime() == nullptr);
+                BOOST_TEST(field(tc.f).if_datetime() == nullptr);
+            }
+
+            if (tc.is_time)
+            {
+                BOOST_TEST(tc.f.if_time() != nullptr);
+                BOOST_TEST(field(tc.f).if_time() != nullptr);
+            }
+            else
+            {
+                BOOST_TEST(tc.f.if_time() == nullptr);
+                BOOST_TEST(field(tc.f).if_time() == nullptr);
+            }
+        }
+    }
+}
+
+BOOST_AUTO_TEST_CASE(as_exceptions)
+{
+    for (const auto& tc : test_cases)
+    {
+        BOOST_TEST_CONTEXT(tc.name)
+        {
+            if (tc.is_int64)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_int64());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_int64());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_int64(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_int64(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_uint64)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_uint64());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_uint64());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_uint64(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_uint64(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_string)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_string());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_string());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_string(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_string(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_float)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_float());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_float());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_float(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_float(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_double)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_double());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_double());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_double(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_double(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_date)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_date());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_date());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_date(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_date(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_datetime)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_datetime());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_datetime());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_datetime(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_datetime(), boost::mysql::bad_field_access);
+            }
+
+            if (tc.is_time)
+            {
+                BOOST_CHECK_NO_THROW(tc.f.as_time());
+                BOOST_CHECK_NO_THROW(field(tc.f).as_time());
+            }
+            else
+            {
+                BOOST_CHECK_THROW(tc.f.as_time(), boost::mysql::bad_field_access);
+                BOOST_CHECK_THROW(field(tc.f).as_time(), boost::mysql::bad_field_access);
+            }
+        }
+    }
+}
+
+// // Success cases (the type matches the called function)
+// BOOST_AUTO_TEST_CASE(int64)
+// {
+//     field_view f (-1);
+//     BOOST_TEST_REQUIRE(f.if_int64() != nullptr);
+//     BOOST_TEST(*f.if_int64() == -1);
+//     BOOST_TEST(f.as_int64() == -1);
+//     BOOST_TEST(f.get_int64() == -1);
+// }
+
+// BOOST_AUTO_TEST_CASE(uint64)
+// {
+//     field_view f (42u);
+//     BOOST_TEST_REQUIRE(f.if_uint64() != nullptr);
+//     BOOST_TEST(*f.if_uint64() == 42u);
+//     BOOST_TEST(f.as_uint64() == 42u);
+//     BOOST_TEST(f.get_uint64() == 42u);
+// }
+
+// BOOST_AUTO_TEST_CASE(string)
+// {
+//     field_view f ("test");
+//     BOOST_TEST_REQUIRE(f.if_string() != nullptr);
+//     BOOST_TEST(*f.if_string() == "test");
+//     BOOST_TEST(f.as_string() == "test");
+//     BOOST_TEST(f.get_string() == "test");
+// }
+
+// BOOST_AUTO_TEST_CASE(float_)
+// {
+//     field_view f (4.2f);
+//     BOOST_TEST_REQUIRE(f.if_float() != nullptr);
+//     BOOST_TEST(*f.if_float() == 4.2f);
+//     BOOST_TEST(f.as_float() == 4.2f);
+//     BOOST_TEST(f.get_float() == 4.2f);
+// }
+
+// BOOST_AUTO_TEST_CASE(double_)
+// {
+//     field_view f (4.2);
+//     BOOST_TEST_REQUIRE(f.if_double() != nullptr);
+//     BOOST_TEST(*f.if_double() == 4.2);
+//     BOOST_TEST(f.as_double() == 4.2);
+//     BOOST_TEST(f.get_double() == 4.2);
+// }
+
+// BOOST_AUTO_TEST_CASE(date)
+// {
+//     auto d = makedate(2020, 1, 2);
+//     field_view f (d);
+//     BOOST_TEST_REQUIRE(f.if_date() != nullptr);
+//     BOOST_TEST(*f.if_date() == d);
+//     BOOST_TEST(f.as_date() == d);
+//     BOOST_TEST(f.get_date() == d);
+// }
+
+// BOOST_AUTO_TEST_CASE(datetime)
+// {
+//     auto dt = makedt(2020, 1, 2);
+//     field_view f (dt);
+//     BOOST_TEST_REQUIRE(f.if_datetime() != nullptr);
+//     BOOST_TEST(*f.if_datetime() == dt);
+//     BOOST_TEST(f.as_datetime() == dt);
+//     BOOST_TEST(f.get_datetime() == dt);
+// }
+
+// BOOST_AUTO_TEST_CASE(time)
+// {
+//     auto t = maket(2020, 1, 2);
+//     field_view f (t);
+//     BOOST_TEST_REQUIRE(f.if_time() != nullptr);
+//     BOOST_TEST(*f.if_time() == t);
+//     BOOST_TEST(f.as_time() == t);
+//     BOOST_TEST(f.get_time() == t);
+// }
+
+BOOST_AUTO_TEST_SUITE_END()
+
+
+// BOOST_AUTO_TEST_CASE(operator_equals)
+// {
+//     struct
+//     {
+//         const char* name;
+//         field_view f1;
+//         field_view f2;
+//         bool is_equal;
+//     } test_cases [] = {
+//         { "null_null", field_view(), field_view(), true, },
+//         { "null_int64", field_view(), field_view(-1), false },
+//         { "null_uint64", field_view(), field_view(42), false },
+//         { "null_string", field_view(), field_view("<NULL>"), false },
+//         { "null_float", field_view(), field_view(4.2f), false },
+//         { "null_double", field_view(), field_view(4.3), false },
+//         { "null_date", field_view(), field_view(makedate(2020, 1, 2)), false },
+//         { "null_datetime", field_view(), field_view(makedt(2020, 1, 1)), false },
+//         { "null_time", field_view(), field_view(maket(23, 1, 1)), false },
+
+//         { "int64_int64_same", field_view(42), field_view(42), true },
+//         { "int64_int64_different", field_view(42), field_view(-1), false },
+//         { "int64_uint64_same", field_view(42), field_view(42u), true },
+//         { "int64_uint64_different", field_view(42), field_view(43u), false },
+//         { "int64_uint64_zero", field_view(0), field_view(0u), true },
+//         { "int64_uint64_lt0", field_view(-1), field_view(42u), false },
+//         { "int64_uint64_gtmax", field_view(42), field_view(0xffffffffffffffffu), false },
+//         { "int64_uint64_lt0gtmax", field_view(-1), field_view(0xffffffffffffffffu), false },
+//         { "int64_string", field_view(42), field_view("42"), false },
+//         { "int64_float", field_view(42), field_view(42.0f), false },
+//         { "int64_double", field_view(42), field_view(42.0), false },
+//         { "int64_date", field_view(42), field_view(makedate(2020, 1, 1)), false },
+//         { "int64_datetime", field_view(42), field_view(makedt(2020, 1, 1)), false },
+//         { "int64_time", field_view(42), field_view(maket(20, 1, 1)), false },
+
+//         { "uint64_uint64_same", field_view(0xffffffffffffffffu), field_view(0xffffffffffffffffu), true },
+//         { "uint64_uint64_different", field_view(42u), field_view(31u), false },
+//         { "uint64_string", field_view(42u), field_view("42"), false },
+//         { "uint64_float", field_view(42u), field_view(42.0f), false },
+//         { "uint64_double", field_view(42u), field_view(42.0), false },
+//         { "uint64_date", field_view(42u), field_view(makedate(2020, 1, 1)), false },
+//         { "uint64_datetime", field_view(42u), field_view(makedt(2020, 1, 1)), false },
+//         { "uint64_time", field_view(42u), field_view(maket(20, 1, 1)), false },
+
+//         { "string_string_same", field_view("test"), field_view("test"), true },
+//         { "string_string_different", field_view("test"), field_view("test2"), false },
+//         { "string_float", field_view("4.2"), field_view(4.2f), false },
+//         { "string_double", field_view("4.2"), field_view(4.2), false },
+//         { "string_date", field_view("2020-01-01"), field_view(makedate(2020, 1, 1)), false },
+//         { "string_datetime", field_view("test"), field_view(makedt(2020, 1, 1)), false },
+//         { "string_time", field_view("test"), field_view(maket(8, 1, 1)), false },
+
+//         { "float_float_same", field_view(4.2f), field_view(4.2f), true },
+//         { "float_float_different", field_view(4.2f), field_view(0.0f), false },
+//         { "float_double", field_view(4.2f), field_view(4.2), false },
+//         { "float_date", field_view(4.2f), field_view(makedate(2020, 1, 2)), false },
+//         { "float_datetime", field_view(4.2f), field_view(makedt(2020, 1, 2)), false },
+//         { "float_time", field_view(4.2f), field_view(maket(20, 1, 2)), false },
+
+//         { "double_double_same", field_view(4.2), field_view(4.2), true },
+//         { "double_double_different", field_view(4.2), field_view(-1.0), false },
+//         { "double_date", field_view(4.2), field_view(makedate(2020, 1, 1)), false },
+//         { "double_datetime", field_view(4.2), field_view(makedt(2020, 1, 1)), false },
+//         { "double_time", field_view(4.2), field_view(maket(9, 1, 1)), false },
+
+//         { "date_date_same", field_view(makedate(2020, 1, 1)), field_view(makedate(2020, 1, 1)), true },
+//         { "date_date_different", field_view(makedate(2020, 1, 1)), field_view(makedate(2019, 1, 1)), false },
+//         { "date_datetime", field_view(makedate(2020, 1, 1)), field_view(makedt(2020, 1, 1)), false },
+//         { "date_time", field_view(makedate(2020, 1, 1)), field_view(maket(9, 1, 1)), false },
+
+//         { "datetime_datetime_same", field_view(makedt(2020, 1, 1, 10)), field_view(makedt(2020, 1, 1, 10)), true },
+//         { "datetime_datetime_different", field_view(makedt(2020, 1, 1, 10)), field_view(makedt(2020, 1, 1, 9)), false },
+//         { "datetime_time", field_view(makedt(2020, 1, 1)), field_view(maket(20, 1, 1)), false },
+
+//         { "time_time_same", field_view(maket(20, 1, 1)), field_view(maket(20, 1, 1)), true },
+//         { "time_time_different", field_view(maket(20, 1, 1)), field_view(maket(20, 1, 1, 10)), false },
+//     };
+
+//     for (const auto& tc : test_cases)
+//     {
+//         BOOST_TEST_CONTEXT(tc.name)
+//         {
+//             if (tc.is_equal)
+//             {
+//                 BOOST_TEST(tc.f1 == tc.f2);
+//                 BOOST_TEST(tc.f2 == tc.f1);
+
+//                 BOOST_TEST(!(tc.f1 != tc.f2));
+//                 BOOST_TEST(!(tc.f2 != tc.f1));
+//             }
+//             else
+//             {
+//                 BOOST_TEST(!(tc.f1 == tc.f2));
+//                 BOOST_TEST(!(tc.f2 == tc.f1));
+
+//                 BOOST_TEST(tc.f1 != tc.f2);
+//                 BOOST_TEST(tc.f2 != tc.f1);
+//             }
+//         }
+//     }
+// }
+
+
+// // operator<<
+// struct stream_sample
+// {
+//     std::string name;
+//     field_view input;
+//     std::string expected;
+
+//     template <class T>
+//     stream_sample(std::string&& name, T input, std::string&& expected) :
+//         name(std::move(name)),
+//         input(input),
+//         expected(std::move(expected))
+//     {
+//     }
+// };
+
+// // Helper struct to define stream operations for date, datetime and time
+// // We will list the possibilities for each component (hours, minutes, days...) and will
+// // take the Cartessian product of all them
+// struct component_value
+// {
+//     const char* name;
+//     int v;
+//     const char* repr;
+// };
+
+// void add_date_samples(std::vector<stream_sample>& output)
+// {
+//     constexpr component_value year_values [] = {
+//         { "min", 0, "0000" },
+//         { "onedig",  1, "0001" },
+//         { "twodig", 98, "0098" },
+//         { "threedig", 789, "0789" },
+//         { "regular", 1999, "1999" },
+//         { "max", 9999, "9999" }
+//     };
+
+//     constexpr component_value month_values [] = {
+//         { "min", 1, "01" },
+//         { "max", 12, "12" }
+//     };
+
+//     constexpr component_value day_values [] = {
+//         { "min", 1, "01" },
+//         { "max", 31, "31" }
+//     };
+
+//     for (const auto& year : year_values)
+//     {
+//         for (const auto& month : month_values)
+//         {
+//             for (const auto& day : day_values)
+//             {
+//                 std::string name = stringize(
+//                     "date_year", year.name,
+//                     "_month", month.name,
+//                     "_day", day.name
+//                 );
+//                 std::string str_val = stringize(year.repr, '-', month.repr, '-', day.repr);
+//                 field_view val (makedate(year.v, static_cast<unsigned>(month.v), static_cast<unsigned>(day.v)));
+//                 output.emplace_back(std::move(name), val, std::move(str_val));
+//             }
+//         }
+//     }
+// }
+
+// void add_datetime_samples(std::vector<stream_sample>& output)
+// {
+//     constexpr component_value year_values [] = {
+//         { "min", 0, "0000" },
+//         { "onedig",  1, "0001" },
+//         { "twodig", 98, "0098" },
+//         { "threedig", 789, "0789" },
+//         { "regular", 1999, "1999" },
+//         { "max", 9999, "9999" }
+//     };
+
+//     constexpr component_value month_values [] = {
+//         { "min", 1, "01" },
+//         { "max", 12, "12" }
+//     };
+
+//     constexpr component_value day_values [] = {
+//         { "min", 1, "01" },
+//         { "max", 31, "31" }
+//     };
+
+//     constexpr component_value hours_values [] = {
+//         { "zero", 0, "00" },
+//         { "onedigit", 5, "05" },
+//         { "max", 23, "23" }
+//     };
+
+//     constexpr component_value mins_secs_values [] = {
+//         { "zero", 0, "00" },
+//         { "onedigit", 5, "05" },
+//         { "twodigits", 59, "59" }
+//     };
+
+//     constexpr component_value micros_values [] = {
+//         { "zero", 0, "000000" },
+//         { "onedigit", 5, "000005" },
+//         { "twodigits", 50, "000050" },
+//         { "max", 999999, "999999" },
+//     };
+
+//     for (const auto& year : year_values)
+//     {
+//         for (const auto& month : month_values)
+//         {
+//             for (const auto& day : day_values)
+//             {
+//                 for (const auto& hours: hours_values)
+//                 {
+//                     for (const auto& mins: mins_secs_values)
+//                     {
+//                         for (const auto& secs: mins_secs_values)
+//                         {
+//                             for (const auto& micros: micros_values)
+//                             {
+//                                 std::string name = stringize(
+//                                     "datetime_year", year.name,
+//                                     "_month", month.name,
+//                                     "_day", day.name,
+//                                     "_h", hours.name,
+//                                     "_m", mins.name,
+//                                     "_s", secs.name,
+//                                     "_u", micros.name
+//                                 );
+//                                 std::string str_val = stringize(
+//                                     year.repr, '-',
+//                                     month.repr, '-',
+//                                     day.repr, ' ',
+//                                     hours.repr, ':',
+//                                     mins.repr, ':',
+//                                     secs.repr, '.',
+//                                     micros.repr
+//                                 );
+//                                 auto val = makedt(
+//                                     year.v,
+//                                     static_cast<unsigned>(month.v),
+//                                     static_cast<unsigned>(day.v),
+//                                     hours.v,
+//                                     mins.v,
+//                                     secs.v,
+//                                     micros.v
+//                                 );
+//                                 output.emplace_back(std::move(name), field_view(val), std::move(str_val));
+//                             }
+//                         }
+//                     }
+//                 }
+//             }
+//         }
+//     }
+// }
+
+// void add_time_samples(std::vector<stream_sample>& output)
+// {
+//     constexpr component_value sign_values [] = {
+//         { "positive", 1, "" },
+//         { "negative", -1, "-" }
+//     };
+
+//     constexpr component_value hours_values [] = {
+//         { "zero", 0, "00" },
+//         { "onedigit", 5, "05" },
+//         { "twodigits", 23, "23" },
+//         { "max", 838, "838" }
+//     };
+
+//     constexpr component_value mins_secs_values [] = {
+//         { "zero", 0, "00" },
+//         { "onedigit", 5, "05" },
+//         { "twodigits", 59, "59" }
+//     };
+
+//     constexpr component_value micros_values [] = {
+//         { "zero", 0, "000000" },
+//         { "onedigit", 5, "000005" },
+//         { "twodigits", 50, "000050" },
+//         { "max", 999999, "999999" },
+//     };
+
+//     for (const auto& sign: sign_values)
+//     {
+//         for (const auto& hours: hours_values)
+//         {
+//             for (const auto& mins: mins_secs_values)
+//             {
+//                 for (const auto& secs: mins_secs_values)
+//                 {
+//                     for (const auto& micros: micros_values)
+//                     {
+//                         std::string name = stringize(
+//                             "time_", sign.name,
+//                             "_h", hours.name,
+//                             "_m", mins.name,
+//                             "_s", secs.name,
+//                             "_u", micros.name
+//                         );
+//                         std::string str_val = stringize(
+//                             sign.repr,
+//                             hours.repr, ':',
+//                             mins.repr, ':',
+//                             secs.repr, '.',
+//                             micros.repr
+//                         );
+//                         auto val = sign.v * maket(hours.v,
+//                                 mins.v, secs.v, micros.v);
+//                         if (sign.v == -1 && val == maket(0, 0, 0))
+//                             continue; // This case makes no sense, as negative zero is represented as zero
+//                         output.emplace_back(std::move(name), field_view(val), std::move(str_val));
+//                     }
+//                 }
+//             }
+//         }
+//     }
+// }
+
+// std::vector<stream_sample> make_stream_samples()
+// {
+//     std::vector<stream_sample> res {
+//         { "null", nullptr, "<NULL>" },
+//         { "i64_positive", std::int64_t(42), "42" },
+//         { "i64_negative", std::int64_t(-90), "-90" },
+//         { "i64_zero", std::int64_t(0), "0" },
+//         { "u64_positive", std::uint64_t(42), "42" },
+//         { "u64_zero", std::uint64_t(0), "0" },
+//         { "string_view", "a_string", "a_string" },
+//         { "float", 2.43f, "2.43" },
+//         { "double", 8.12, "8.12" },
+//     };
+//     add_date_samples(res);
+//     add_datetime_samples(res);
+//     add_time_samples(res);
+//     return res;
+// }
+
+// BOOST_AUTO_TEST_CASE(operator_stream)
+// {
+//     auto test_cases = make_stream_samples();
+//     for (const auto& tc : test_cases)
+//     {
+//         BOOST_TEST_CONTEXT(tc.name)
+//         {
+//             std::ostringstream ss;
+//             ss << tc.input;
+//             BOOST_TEST(ss.str() == tc.expected);
+//         }
+//     }
+// }
+
+BOOST_AUTO_TEST_SUITE_END()
+
+}
\ No newline at end of file
diff --git a/test/unit/field_view.cpp b/test/unit/field_view.cpp
index b9a4c07d..b108b8ba 100644
--- a/test/unit/field_view.cpp
+++ b/test/unit/field_view.cpp
@@ -8,16 +8,9 @@
 #include <boost/mysql/field_view.hpp>
 #include <boost/test/tools/context.hpp>
 #include <boost/test/unit_test_suite.hpp>
-#include <boost/type_index.hpp>
-#include <boost/test/data/monomorphic/collection.hpp>
-#include <boost/test/data/test_case.hpp>
-#include <boost/utility/string_view_fwd.hpp>
 #include <cstddef>
 #include <cstdint>
-#include <set>
 #include <sstream>
-#include <map>
-#include <tuple>
 #include "test_common.hpp"
 
 BOOST_TEST_DONT_PRINT_LOG_VALUE(boost::mysql::date)
@@ -27,7 +20,6 @@ BOOST_TEST_DONT_PRINT_LOG_VALUE(boost::mysql::time)
 using namespace boost::mysql::test;
 using boost::mysql::field_view;
 using boost::mysql::field_kind;
-using boost::typeindex::type_index;
 
 namespace
 {