#![cfg_attr(not(feature = "std"), no_std)]
#![allow(dead_code)]

#[cfg(not(feature = "std"))]
extern crate alloc;

mod structs {
    mod unit {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        struct Unit;

        #[derive(Debug)]
        struct Tuple();

        #[derive(Debug)]
        struct Struct {}

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Unit), "Unit");
            assert_eq!(format!("{:#?}", Unit), "Unit");
            assert_eq!(format!("{:?}", Tuple()), "Tuple");
            assert_eq!(format!("{:#?}", Tuple()), "Tuple");
            assert_eq!(format!("{:?}", Struct {}), "Struct");
            assert_eq!(format!("{:#?}", Struct {}), "Struct");
        }
    }

    mod single_field {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        struct Tuple(i32);

        #[derive(Debug)]
        struct Struct {
            field: i32,
        }

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Tuple(0)), "Tuple(0)");
            assert_eq!(format!("{:#?}", Tuple(0)), "Tuple(\n    0,\n)");
            assert_eq!(format!("{:?}", Struct { field: 0 }), "Struct { field: 0 }");
            assert_eq!(
                format!("{:#?}", Struct { field: 0 }),
                "Struct {\n    field: 0,\n}",
            );
        }

        mod str_field {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(#[debug("i32")] i32);

            #[derive(Debug)]
            struct Struct {
                #[debug("i32")]
                field: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(0)), "Tuple(i32)");
                assert_eq!(format!("{:#?}", Tuple(0)), "Tuple(\n    i32,\n)");
                assert_eq!(
                    format!("{:?}", Struct { field: 0 }),
                    "Struct { field: i32 }",
                );
                assert_eq!(
                    format!("{:#?}", Struct { field: 0 }),
                    "Struct {\n    field: i32,\n}",
                );
            }
        }

        mod interpolated_field {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(#[debug("{_0}.{}", _0)] i32);

            #[derive(Debug)]
            struct Struct {
                #[debug("{field}.{}", field)]
                field: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(0)), "Tuple(0.0)");
                assert_eq!(format!("{:#?}", Tuple(0)), "Tuple(\n    0.0,\n)");
                assert_eq!(
                    format!("{:?}", Struct { field: 0 }),
                    "Struct { field: 0.0 }",
                );
                assert_eq!(
                    format!("{:#?}", Struct { field: 0 }),
                    "Struct {\n    field: 0.0,\n}",
                );
            }
        }

        mod ignore {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(#[debug(ignore)] i32);

            #[derive(Debug)]
            struct Struct {
                #[debug(skip)]
                field: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(0)), "Tuple(..)");
                assert_eq!(format!("{:#?}", Tuple(0)), "Tuple(..)");
                assert_eq!(format!("{:?}", Struct { field: 0 }), "Struct { .. }");
                assert_eq!(format!("{:#?}", Struct { field: 0 }), "Struct { .. }");
            }
        }
    }

    mod multi_field {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        struct Tuple(i32, i32);

        #[derive(Debug)]
        struct Struct {
            field1: i32,
            field2: i32,
        }

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Tuple(1, 2)), "Tuple(1, 2)");
            assert_eq!(format!("{:#?}", Tuple(1, 2)), "Tuple(\n    1,\n    2,\n)");
            assert_eq!(
                format!(
                    "{:?}",
                    Struct {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "Struct { field1: 1, field2: 2 }",
            );
            assert_eq!(
                format!(
                    "{:#?}",
                    Struct {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "Struct {\n    field1: 1,\n    field2: 2,\n}",
            );
        }

        mod str_field {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(i32, #[debug("i32")] i32);

            #[derive(Debug)]
            struct Struct {
                #[debug("i32")]
                field1: i32,
                field2: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(1, 2)), "Tuple(1, i32)");
                assert_eq!(
                    format!("{:#?}", Tuple(1, 2)),
                    "Tuple(\n    1,\n    i32,\n)",
                );
                assert_eq!(
                    format!(
                        "{:?}",
                        Struct {
                            field1: 1,
                            field2: 2,
                        }
                    ),
                    "Struct { field1: i32, field2: 2 }",
                );
                assert_eq!(
                    format!(
                        "{:#?}",
                        Struct {
                            field1: 1,
                            field2: 2,
                        }
                    ),
                    "Struct {\n    field1: i32,\n    field2: 2,\n}",
                );
            }
        }

        mod interpolated_field {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(i32, #[debug("{_0}.{}", _1)] i32);

            #[derive(Debug)]
            struct Struct {
                #[debug("{field1}.{}", field2)]
                field1: i32,
                field2: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(1, 2)), "Tuple(1, 1.2)");
                assert_eq!(
                    format!("{:#?}", Tuple(1, 2)),
                    "Tuple(\n    1,\n    1.2,\n)",
                );
                assert_eq!(
                    format!(
                        "{:?}",
                        Struct {
                            field1: 1,
                            field2: 2,
                        }
                    ),
                    "Struct { field1: 1.2, field2: 2 }",
                );
                assert_eq!(
                    format!(
                        "{:#?}",
                        Struct {
                            field1: 1,
                            field2: 2,
                        }
                    ),
                    "Struct {\n    field1: 1.2,\n    field2: 2,\n}",
                );
            }
        }

        mod ignore {
            #[cfg(not(feature = "std"))]
            use alloc::format;

            use derive_more::Debug;

            #[derive(Debug)]
            struct Tuple(#[debug(ignore)] i32, i32);

            #[derive(Debug)]
            struct Struct {
                field1: i32,
                #[debug(skip)]
                field2: i32,
            }

            #[test]
            fn assert() {
                assert_eq!(format!("{:?}", Tuple(1, 2)), "Tuple(2, ..)");
                assert_eq!(format!("{:#?}", Tuple(1, 2)), "Tuple(\n    2,\n    ..\n)",);
                assert_eq!(
                    format!(
                        "{:?}",
                        Struct {
                            field1: 1,
                            field2: 2
                        }
                    ),
                    "Struct { field1: 1, .. }",
                );
                assert_eq!(
                    format!(
                        "{:#?}",
                        Struct {
                            field1: 1,
                            field2: 2
                        }
                    ),
                    "Struct {\n    field1: 1,\n    ..\n}",
                );
            }
        }
    }
}

mod enums {
    mod no_variants {
        use derive_more::Debug;

        #[derive(Debug)]
        enum Void {}

        const fn assert<T: core::fmt::Debug>() {}
        const _: () = assert::<Void>();
    }

    mod unit_variant {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        enum Enum {
            Unit,
            Unnamed(),
            Named {},
        }

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Enum::Unit), "Unit");
            assert_eq!(format!("{:#?}", Enum::Unit), "Unit");
            assert_eq!(format!("{:?}", Enum::Unnamed()), "Unnamed");
            assert_eq!(format!("{:#?}", Enum::Unnamed()), "Unnamed");
            assert_eq!(format!("{:?}", Enum::Named {}), "Named");
            assert_eq!(format!("{:#?}", Enum::Named {}), "Named");
        }
    }

    mod single_field_variant {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        enum Enum {
            Unnamed(i32),
            Named {
                field: i32,
            },
            StrUnnamed(#[debug("i32")] i32),
            StrNamed {
                #[debug("i32")]
                field: i32,
            },
            InterpolatedUnnamed(#[debug("{_0}.{}", _0)] i32),
            InterpolatedNamed {
                #[debug("{field}.{}", field)]
                field: i32,
            },
            SkippedUnnamed(#[debug(skip)] i32),
            SkippedNamed {
                #[debug(skip)]
                field: i32,
            },
        }

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Enum::Unnamed(1)), "Unnamed(1)");
            assert_eq!(format!("{:#?}", Enum::Unnamed(1)), "Unnamed(\n    1,\n)");
            assert_eq!(
                format!("{:?}", Enum::Named { field: 1 }),
                "Named { field: 1 }",
            );
            assert_eq!(
                format!("{:#?}", Enum::Named { field: 1 }),
                "Named {\n    field: 1,\n}",
            );
            assert_eq!(format!("{:?}", Enum::StrUnnamed(1)), "StrUnnamed(i32)");
            assert_eq!(
                format!("{:#?}", Enum::StrUnnamed(1)),
                "StrUnnamed(\n    i32,\n)",
            );
            assert_eq!(
                format!("{:?}", Enum::StrNamed { field: 1 }),
                "StrNamed { field: i32 }",
            );
            assert_eq!(
                format!("{:#?}", Enum::StrNamed { field: 1 }),
                "StrNamed {\n    field: i32,\n}",
            );
            assert_eq!(
                format!("{:?}", Enum::InterpolatedUnnamed(1)),
                "InterpolatedUnnamed(1.1)",
            );
            assert_eq!(
                format!("{:#?}", Enum::InterpolatedUnnamed(1)),
                "InterpolatedUnnamed(\n    1.1,\n)",
            );
            assert_eq!(
                format!("{:?}", Enum::InterpolatedNamed { field: 1 }),
                "InterpolatedNamed { field: 1.1 }",
            );
            assert_eq!(
                format!("{:#?}", Enum::InterpolatedNamed { field: 1 }),
                "InterpolatedNamed {\n    field: 1.1,\n}",
            );
            assert_eq!(
                format!("{:?}", Enum::SkippedUnnamed(1)),
                "SkippedUnnamed(..)",
            );
            assert_eq!(
                format!("{:#?}", Enum::SkippedUnnamed(1)),
                "SkippedUnnamed(..)",
            );
            assert_eq!(
                format!("{:?}", Enum::SkippedNamed { field: 1 }),
                "SkippedNamed { .. }",
            );
            assert_eq!(
                format!("{:#?}", Enum::SkippedNamed { field: 1 }),
                "SkippedNamed { .. }",
            );
        }
    }

    mod multi_field_variant {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        enum Enum {
            Unnamed(i32, i32),
            Named {
                field1: i32,
                field2: i32,
            },
            StrUnnamed(#[debug("i32")] i32, i32),
            StrNamed {
                field1: i32,
                #[debug("i32")]
                field2: i32,
            },
            InterpolatedUnnamed(i32, #[debug("{_0}.{}", _1)] i32),
            InterpolatedNamed {
                #[debug("{field1}.{}", field2)]
                field1: i32,
                field2: i32,
            },
            SkippedUnnamed(i32, #[debug(skip)] i32),
            SkippedNamed {
                #[debug(skip)]
                field1: i32,
                field2: i32,
            },
        }

        #[test]
        fn assert() {
            assert_eq!(format!("{:?}", Enum::Unnamed(1, 2)), "Unnamed(1, 2)");
            assert_eq!(
                format!("{:#?}", Enum::Unnamed(1, 2)),
                "Unnamed(\n    1,\n    2,\n)",
            );
            assert_eq!(
                format!("{:?}", Enum::StrUnnamed(1, 2)),
                "StrUnnamed(i32, 2)",
            );
            assert_eq!(
                format!("{:#?}", Enum::StrUnnamed(1, 2)),
                "StrUnnamed(\n    i32,\n    2,\n)",
            );
            assert_eq!(
                format!(
                    "{:?}",
                    Enum::StrNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "StrNamed { field1: 1, field2: i32 }",
            );
            assert_eq!(
                format!(
                    "{:#?}",
                    Enum::StrNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "StrNamed {\n    field1: 1,\n    field2: i32,\n}",
            );
            assert_eq!(
                format!("{:?}", Enum::InterpolatedUnnamed(1, 2)),
                "InterpolatedUnnamed(1, 1.2)",
            );
            assert_eq!(
                format!("{:#?}", Enum::InterpolatedUnnamed(1, 2)),
                "InterpolatedUnnamed(\n    1,\n    1.2,\n)",
            );
            assert_eq!(
                format!(
                    "{:?}",
                    Enum::InterpolatedNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "InterpolatedNamed { field1: 1.2, field2: 2 }",
            );
            assert_eq!(
                format!(
                    "{:#?}",
                    Enum::InterpolatedNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "InterpolatedNamed {\n    field1: 1.2,\n    field2: 2,\n}",
            );
            assert_eq!(
                format!("{:?}", Enum::SkippedUnnamed(1, 2)),
                "SkippedUnnamed(1, ..)",
            );
            assert_eq!(
                format!("{:#?}", Enum::SkippedUnnamed(1, 2)),
                "SkippedUnnamed(\n    1,\n    ..\n)",
            );
            assert_eq!(
                format!(
                    "{:?}",
                    Enum::SkippedNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "SkippedNamed { field2: 2, .. }",
            );
            assert_eq!(
                format!(
                    "{:#?}",
                    Enum::SkippedNamed {
                        field1: 1,
                        field2: 2,
                    }
                ),
                "SkippedNamed {\n    field2: 2,\n    ..\n}",
            );
        }
    }
}

mod generic {
    #[cfg(not(feature = "std"))]
    use alloc::format;

    use derive_more::Debug;

    struct NotDebug;

    trait Bound {}

    impl Bound for () {}

    fn display_bound<T: Bound>(_: &T) -> &'static str {
        "()"
    }

    #[derive(Debug)]
    struct NamedGenericStruct<T> {
        field: T,
    }
    #[test]
    fn named_generic_struct() {
        assert_eq!(
            format!("{:?}", NamedGenericStruct { field: 1 }),
            "NamedGenericStruct { field: 1 }",
        );
        assert_eq!(
            format!("{:#?}", NamedGenericStruct { field: 1 }),
            "NamedGenericStruct {\n    field: 1,\n}",
        );
    }

    #[derive(Debug)]
    struct InterpolatedNamedGenericStruct<T> {
        #[debug("{field}.{}", field)]
        field: T,
    }
    #[test]
    fn interpolated_named_generic_struct() {
        assert_eq!(
            format!("{:?}", InterpolatedNamedGenericStruct { field: 1 }),
            "InterpolatedNamedGenericStruct { field: 1.1 }",
        );
        assert_eq!(
            format!("{:#?}", InterpolatedNamedGenericStruct { field: 1 }),
            "InterpolatedNamedGenericStruct {\n    field: 1.1,\n}",
        );
    }

    #[derive(Debug)]
    struct InterpolatedNamedGenericStructWidthPrecision<T> {
        #[debug("{field:<>width$.prec$}.{field}")]
        field: T,
        width: usize,
        prec: usize,
    }
    #[test]
    fn interpolated_named_generic_struct_width_precision() {
        assert_eq!(
            format!(
                "{:?}",
                InterpolatedNamedGenericStructWidthPrecision {
                    field: 1.2345,
                    width: 9,
                    prec: 2,
                }
            ),
            "InterpolatedNamedGenericStructWidthPrecision { \
                    field: <<<<<1.23.1.2345, \
                    width: 9, \
                    prec: 2 \
                }",
        );
        assert_eq!(
            format!(
                "{:#?}",
                InterpolatedNamedGenericStructWidthPrecision {
                    field: 1.2345,
                    width: 9,
                    prec: 2,
                }
            ),
            "InterpolatedNamedGenericStructWidthPrecision {\n    \
                    field: <<<<<1.23.1.2345,\n    \
                    width: 9,\n    \
                    prec: 2,\n\
                }",
        );
    }

    #[derive(Debug)]
    struct AliasedNamedGenericStruct<T> {
        #[debug("{alias}", alias = field)]
        field: T,
    }
    #[test]
    fn aliased_named_generic_struct() {
        assert_eq!(
            format!("{:?}", AliasedNamedGenericStruct { field: 1 }),
            "AliasedNamedGenericStruct { field: 1 }",
        );
        assert_eq!(
            format!("{:#?}", AliasedNamedGenericStruct { field: 1 }),
            "AliasedNamedGenericStruct {\n    field: 1,\n}",
        );
    }

    #[derive(Debug)]
    struct AliasedFieldNamedGenericStruct<T> {
        #[debug("{field1}", field1 = field2)]
        field1: T,
        field2: i32,
    }
    #[test]
    fn aliased_field_named_generic_struct() {
        assert_eq!(
            format!(
                "{:?}",
                AliasedFieldNamedGenericStruct {
                    field1: NotDebug,
                    field2: 1,
                },
            ),
            "AliasedFieldNamedGenericStruct { field1: 1, field2: 1 }",
        );
        assert_eq!(
            format!(
                "{:#?}",
                AliasedFieldNamedGenericStruct {
                    field1: NotDebug,
                    field2: 1,
                },
            ),
            "AliasedFieldNamedGenericStruct {\n    field1: 1,\n    field2: 1,\n}",
        );
    }

    #[derive(Debug)]
    struct UnnamedGenericStruct<T>(T);
    #[test]
    fn unnamed_generic_struct() {
        assert_eq!(
            format!("{:?}", UnnamedGenericStruct(2)),
            "UnnamedGenericStruct(2)",
        );
        assert_eq!(
            format!("{:#?}", UnnamedGenericStruct(2)),
            "UnnamedGenericStruct(\n    2,\n)",
        );
    }

    #[derive(Debug)]
    struct InterpolatedUnnamedGenericStruct<T>(#[debug("{}.{_0}", _0)] T);
    #[test]
    fn interpolated_unnamed_generic_struct() {
        assert_eq!(
            format!("{:?}", InterpolatedUnnamedGenericStruct(2)),
            "InterpolatedUnnamedGenericStruct(2.2)",
        );
        assert_eq!(
            format!("{:#?}", InterpolatedUnnamedGenericStruct(2)),
            "InterpolatedUnnamedGenericStruct(\n    2.2,\n)",
        );
    }

    #[derive(Debug)]
    struct AliasedUnnamedGenericStruct<T>(#[debug("{alias}", alias = _0)] T);
    #[test]
    fn aliased_unnamed_generic_struct() {
        assert_eq!(
            format!("{:?}", AliasedUnnamedGenericStruct(2)),
            "AliasedUnnamedGenericStruct(2)",
        );
        assert_eq!(
            format!("{:#?}", AliasedUnnamedGenericStruct(2)),
            "AliasedUnnamedGenericStruct(\n    2,\n)",
        );
    }

    #[derive(Debug)]
    struct AliasedFieldUnnamedGenericStruct<T>(#[debug("{_0}", _0 = _1)] T, i32);
    #[test]
    fn aliased_field_unnamed_generic_struct() {
        assert_eq!(
            format!("{:?}", AliasedFieldUnnamedGenericStruct(NotDebug, 2)),
            "AliasedFieldUnnamedGenericStruct(2, 2)",
        );
        assert_eq!(
            format!("{:#?}", AliasedFieldUnnamedGenericStruct(NotDebug, 2)),
            "AliasedFieldUnnamedGenericStruct(\n    2,\n    2,\n)",
        );
    }

    #[derive(Debug)]
    enum GenericEnum<A, B> {
        A { field: A },
        B(B),
    }
    #[test]
    fn generic_enum() {
        assert_eq!(
            format!("{:?}", GenericEnum::A::<_, u8> { field: 1 }),
            "A { field: 1 }"
        );
        assert_eq!(
            format!("{:#?}", GenericEnum::A::<_, u8> { field: 1 }),
            "A {\n    field: 1,\n}"
        );
        assert_eq!(format!("{:?}", GenericEnum::B::<u8, _>(2)), "B(2)");
        assert_eq!(
            format!("{:#?}", GenericEnum::B::<u8, _>(2)),
            "B(\n    2,\n)",
        );
    }

    #[derive(Debug)]
    enum InterpolatedGenericEnum<A, B> {
        A {
            #[debug("{}.{field}", field)]
            field: A,
        },
        B(#[debug("{}.{_0}", _0)] B),
    }
    #[test]
    fn interpolated_generic_enum() {
        assert_eq!(
            format!("{:?}", InterpolatedGenericEnum::A::<_, u8> { field: 1 }),
            "A { field: 1.1 }",
        );
        assert_eq!(
            format!("{:#?}", InterpolatedGenericEnum::A::<_, u8> { field: 1 }),
            "A {\n    field: 1.1,\n}",
        );
        assert_eq!(
            format!("{:?}", InterpolatedGenericEnum::B::<u8, _>(2)),
            "B(2.2)",
        );
        assert_eq!(
            format!("{:#?}", InterpolatedGenericEnum::B::<u8, _>(2)),
            "B(\n    2.2,\n)",
        );
    }

    #[derive(Debug)]
    struct MultiTraitNamedGenericStruct<A, B> {
        #[debug("{}.{}<->{0:o}.{1:#x}<->{0:?}.{1:X?}", a, b)]
        a: A,
        b: B,
    }
    #[test]
    fn multi_trait_named_generic_struct() {
        let s = MultiTraitNamedGenericStruct { a: 8u8, b: 255 };
        assert_eq!(
            format!("{s:?}"),
            "MultiTraitNamedGenericStruct { a: 8.255<->10.0xff<->8.FF, b: 255 }",
        );
        assert_eq!(
                format!("{s:#?}"),
                "MultiTraitNamedGenericStruct {\n    a: 8.255<->10.0xff<->8.FF,\n    b: 255,\n}",
            );
    }

    #[derive(Debug)]
    struct MultiTraitUnnamedGenericStruct<A, B>(
        #[debug("{}.{}.{{}}.{0:o}.{1:#x}-{0:>4?}.{1:^4X?}", _0, _1)] A,
        B,
    );
    #[test]
    fn multi_trait_unnamed_generic_struct() {
        let s = MultiTraitUnnamedGenericStruct(8u8, 255);
        assert_eq!(
            format!("{s:?}"),
            "MultiTraitUnnamedGenericStruct(8.255.{}.10.0xff-   8. FF , 255)",
        );
        assert_eq!(
                format!("{s:#?}"),
                "MultiTraitUnnamedGenericStruct(\n    8.255.{}.10.0xff-   8. FF ,\n    255,\n)",
            );
    }

    #[derive(Debug)]
    struct UnusedGenericStruct<T>(#[debug("{}", 3 * 4)] T);
    #[test]
    fn unused_generic_struct() {
        let s = UnusedGenericStruct(NotDebug);
        assert_eq!(format!("{s:?}"), "UnusedGenericStruct(12)");
        assert_eq!(format!("{s:#?}"), "UnusedGenericStruct(\n    12,\n)");
    }

    mod associated_type_field_enumerator {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        trait Trait {
            type Type;
        }

        struct Struct;

        impl Trait for Struct {
            type Type = i32;
        }

        #[test]
        fn auto_generic_named_struct_associated() {
            #[derive(Debug)]
            struct AutoGenericNamedStructAssociated<T: Trait> {
                field: <T as Trait>::Type,
            }

            let s = AutoGenericNamedStructAssociated::<Struct> { field: 10 };
            assert_eq!(
                format!("{s:?}"),
                "AutoGenericNamedStructAssociated { field: 10 }",
            );
            assert_eq!(
                format!("{s:#?}"),
                "AutoGenericNamedStructAssociated {\n    field: 10,\n}",
            );
        }

        #[test]
        fn auto_generic_unnamed_struct_associated() {
            #[derive(Debug)]
            struct AutoGenericUnnamedStructAssociated<T: Trait>(<T as Trait>::Type);

            let s = AutoGenericUnnamedStructAssociated::<Struct>(10);
            assert_eq!(format!("{s:?}"), "AutoGenericUnnamedStructAssociated(10)",);
            assert_eq!(
                format!("{s:#?}"),
                "AutoGenericUnnamedStructAssociated(\n    10,\n)",
            );
        }

        #[test]
        fn auto_generic_enum_associated() {
            #[derive(Debug)]
            enum AutoGenericEnumAssociated<T: Trait> {
                Enumerator(<T as Trait>::Type),
            }

            let e = AutoGenericEnumAssociated::<Struct>::Enumerator(10);
            assert_eq!(format!("{:?}", e), "Enumerator(10)");
            assert_eq!(format!("{:#?}", e), "Enumerator(\n    10,\n)");
        }
    }

    mod complex_type_field_enumerator {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        struct Struct<T>(T);

        #[test]
        fn auto_generic_named_struct_complex() {
            #[derive(Debug)]
            struct AutoGenericNamedStructComplex<T> {
                field: Struct<T>,
            }

            let s = AutoGenericNamedStructComplex { field: Struct(10) };
            assert_eq!(
                format!("{s:?}"),
                "AutoGenericNamedStructComplex { field: Struct(10) }",
            );
            assert_eq!(
                    format!("{s:#?}"),
                    "AutoGenericNamedStructComplex {\n    field: Struct(\n        10,\n    ),\n}",
                );
        }

        #[test]
        fn auto_generic_unnamed_struct_complex() {
            #[derive(Debug)]
            struct AutoGenericUnnamedStructComplex<T>(Struct<T>);

            let s = AutoGenericUnnamedStructComplex(Struct(10));
            assert_eq!(
                format!("{s:?}"),
                "AutoGenericUnnamedStructComplex(Struct(10))",
            );
            assert_eq!(
                format!("{s:#?}"),
                "AutoGenericUnnamedStructComplex(\n    Struct(\n        10,\n    ),\n)",
            );
        }

        #[test]
        fn auto_generic_enum_complex() {
            #[derive(Debug)]
            enum AutoGenericEnumComplex<T> {
                Enumerator(Struct<T>),
            }

            let e = AutoGenericEnumComplex::Enumerator(Struct(10));
            assert_eq!(format!("{:?}", e), "Enumerator(Struct(10))");
            assert_eq!(
                format!("{:#?}", e),
                "Enumerator(\n    Struct(\n        10,\n    ),\n)",
            )
        }
    }

    mod reference {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[test]
        fn auto_generic_reference() {
            #[derive(Debug)]
            struct AutoGenericReference<'a, T>(&'a T);

            let s = AutoGenericReference(&10);
            assert_eq!(format!("{s:?}"), "AutoGenericReference(10)");
            assert_eq!(format!("{s:#?}"), "AutoGenericReference(\n    10,\n)");
        }

        #[test]
        fn auto_generic_static_reference() {
            #[derive(Debug)]
            struct AutoGenericStaticReference<T: 'static>(&'static T);

            let s = AutoGenericStaticReference(&10);
            assert_eq!(format!("{s:?}"), "AutoGenericStaticReference(10)");
            assert_eq!(format!("{s:#?}"), "AutoGenericStaticReference(\n    10,\n)",);
        }
    }

    mod indirect {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[derive(Debug)]
        struct Struct<T>(T);

        #[test]
        fn auto_generic_indirect() {
            #[derive(Debug)]
            struct AutoGenericIndirect<T: 'static>(Struct<&'static T>);

            const V: i32 = 10;
            let s = AutoGenericIndirect(Struct(&V));
            assert_eq!(format!("{s:?}"), "AutoGenericIndirect(Struct(10))");
            assert_eq!(
                format!("{s:#?}"),
                "AutoGenericIndirect(\n    Struct(\n        10,\n    ),\n)",
            );
        }
    }

    mod bound {
        #[cfg(not(feature = "std"))]
        use alloc::format;

        use derive_more::Debug;

        #[test]
        fn simple() {
            #[derive(Debug)]
            struct Struct<T1, T2>(#[debug("{}.{}", _0, _1)] T1, #[debug(skip)] T2);

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(10.20, ..)");
            assert_eq!(format!("{s:#?}"), "Struct(\n    10.20,\n    ..\n)");
        }

        #[test]
        fn underscored_simple() {
            #[derive(Debug)]
            struct Struct<T1, T2>(#[debug("{_0}.{_1}")] T1, #[debug(skip)] T2);

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(10.20, ..)");
            assert_eq!(format!("{s:#?}"), "Struct(\n    10.20,\n    ..\n)");
        }

        #[test]
        fn redundant() {
            #[derive(Debug)]
            #[debug(bound(T1: ::core::fmt::Display, T2: ::core::fmt::Display))]
            struct Struct<T1, T2>(#[debug("{}.{}", _0, _1)] T1, #[debug(skip)] T2);

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(10.20, ..)");
            assert_eq!(format!("{s:#?}"), "Struct(\n    10.20,\n    ..\n)");
        }

        #[test]
        fn underscored_redundant() {
            #[derive(Debug)]
            #[debug(bound(T1: ::core::fmt::Display, T2: ::core::fmt::Display))]
            struct Struct<T1, T2>(#[debug("{_0}.{_1}")] T1, #[debug(ignore)] T2);

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(10.20, ..)");
            assert_eq!(format!("{s:#?}"), "Struct(\n    10.20,\n    ..\n)");
        }

        #[test]
        fn complex() {
            trait Trait1 {
                fn function1(&self) -> &'static str;
            }

            trait Trait2 {
                fn function2(&self) -> &'static str;
            }

            impl Trait1 for i32 {
                fn function1(&self) -> &'static str {
                    "WHAT"
                }
            }

            impl Trait2 for i32 {
                fn function2(&self) -> &'static str {
                    "EVER"
                }
            }

            #[derive(Debug)]
            #[debug(bound(T1: Trait1 + Trait2, T2: Trait1 + Trait2))]
            struct Struct<T1, T2>(
                #[debug("{}_{}_{}_{}", _0.function1(), _0, _1.function2(), _1)] T1,
                T2,
            );

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(WHAT_10_EVER_20, 20)");
            assert_eq!(
                format!("{s:#?}"),
                "Struct(\n    WHAT_10_EVER_20,\n    20,\n)",
            );
        }

        #[test]
        fn underscored_complex() {
            trait Trait1 {
                fn function1(&self) -> &'static str;
            }

            trait Trait2 {
                fn function2(&self) -> &'static str;
            }

            impl Trait1 for i32 {
                fn function1(&self) -> &'static str {
                    "WHAT"
                }
            }

            impl Trait2 for i32 {
                fn function2(&self) -> &'static str {
                    "EVER"
                }
            }

            #[derive(Debug)]
            #[debug(bound(T1: Trait1 + Trait2, T2: Trait1 + Trait2))]
            struct Struct<T1, T2>(
                #[debug("{}_{_0}_{}_{_1}", _0.function1(), _1.function2())] T1,
                T2,
            );

            let s = Struct(10, 20);
            assert_eq!(format!("{s:?}"), "Struct(WHAT_10_EVER_20, 20)");
            assert_eq!(
                format!("{s:#?}"),
                "Struct(\n    WHAT_10_EVER_20,\n    20,\n)",
            );
        }
    }
}