From e1535ee0a9f9d01d16a79c380b493f676ae57121 Mon Sep 17 00:00:00 2001 From: Alexandros Naskos Date: Tue, 1 May 2018 13:01:54 +0300 Subject: [PATCH] Added typeInfo tests --- test/cases/type_info.zig | 181 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 181 insertions(+) create mode 100644 test/cases/type_info.zig diff --git a/test/cases/type_info.zig b/test/cases/type_info.zig new file mode 100644 index 000000000..8e6721bea --- /dev/null +++ b/test/cases/type_info.zig @@ -0,0 +1,181 @@ +const assert = @import("std").debug.assert; +const mem = @import("std").mem; +const TypeInfo = @import("builtin").TypeInfo; +const TypeId = @import("builtin").TypeId; + +test "type info: tag type, void info" { + comptime { + assert(@TagType(TypeInfo) == TypeId); + const void_info = @typeInfo(void); + assert(TypeId(void_info) == TypeId.Void); + assert(void_info.Void == {}); + } +} + +test "type info: integer, floating point type info" { + comptime { + const u8_info = @typeInfo(u8); + assert(TypeId(u8_info) == TypeId.Int); + assert(!u8_info.Int.is_signed); + assert(u8_info.Int.bits == 8); + + const f64_info = @typeInfo(f64); + assert(TypeId(f64_info) == TypeId.Float); + assert(f64_info.Float.bits == 64); + } +} + +test "type info: pointer, array and nullable type info" { + comptime { + const u32_ptr_info = @typeInfo(&u32); + assert(TypeId(u32_ptr_info) == TypeId.Pointer); + assert(u32_ptr_info.Pointer.is_const == false); + assert(u32_ptr_info.Pointer.is_volatile == false); + assert(u32_ptr_info.Pointer.alignment == 4); + assert(u32_ptr_info.Pointer.child == u32); + + const arr_info = @typeInfo([42]bool); + assert(TypeId(arr_info) == TypeId.Array); + assert(arr_info.Array.len == 42); + assert(arr_info.Array.child == bool); + + const null_info = @typeInfo(?void); + assert(TypeId(null_info) == TypeId.Nullable); + assert(null_info.Nullable.child == void); + } +} + +test "type info: promise info" { + comptime { + const null_promise_info = @typeInfo(promise); + assert(TypeId(null_promise_info) == TypeId.Promise); + assert(null_promise_info.Promise.child == @typeOf(undefined)); + + const promise_info = @typeInfo(promise->usize); + assert(TypeId(promise_info) == TypeId.Promise); + assert(promise_info.Promise.child == usize); + } + +} + +test "type info: error set, error union info" { + comptime { + const TestErrorSet = error { + First, + Second, + Third, + }; + + const error_set_info = @typeInfo(TestErrorSet); + assert(TypeId(error_set_info) == TypeId.ErrorSet); + assert(error_set_info.ErrorSet.errors.len == 3); + assert(mem.eql(u8, error_set_info.ErrorSet.errors[0].name, "First")); + assert(error_set_info.ErrorSet.errors[2].value == 3); + + const error_union_info = @typeInfo(TestErrorSet!usize); + assert(TypeId(error_union_info) == TypeId.ErrorUnion); + assert(error_union_info.ErrorUnion.error_set == TestErrorSet); + assert(error_union_info.ErrorUnion.payload == usize); + } +} + +test "type info: enum info" { + comptime { + const Os = @import("builtin").Os; + + const os_info = @typeInfo(Os); + assert(TypeId(os_info) == TypeId.Enum); + assert(os_info.Enum.layout == TypeInfo.ContainerLayout.Auto); + assert(os_info.Enum.fields.len == 32); + assert(mem.eql(u8, os_info.Enum.fields[1].name, "ananas")); + assert(os_info.Enum.fields[10].value == 10); + assert(os_info.Enum.tag_type == u5); + assert(os_info.Enum.defs.len == 0); + } +} + +test "type info: union info" { + comptime { + const typeinfo_info = @typeInfo(TypeInfo); + assert(TypeId(typeinfo_info) == TypeId.Union); + assert(typeinfo_info.Union.layout == TypeInfo.ContainerLayout.Auto); + assert(typeinfo_info.Union.tag_type == TypeId); + assert(typeinfo_info.Union.fields.len == 25); + assert(typeinfo_info.Union.fields[4].enum_field != null); + assert((??typeinfo_info.Union.fields[4].enum_field).value == 4); + assert(typeinfo_info.Union.fields[4].field_type == @typeOf(u8_info.Int)); + assert(typeinfo_info.Union.defs.len == 20); + + const TestNoTagUnion = union { + Foo: void, + Bar: u32, + }; + + const notag_union_info = @typeInfo(TestNoTagUnion); + assert(TypeId(notag_union_info) == TypeId.Union); + assert(notag_union_info.Union.tag_type == @typeOf(undefined)); + assert(notag_union_info.Union.layout == TypeInfo.ContainerLayout.Auto); + assert(notag_union_info.Union.fields.len == 2); + assert(notag_union_info.Union.fields[0].enum_field == null); + assert(notag_union_info.Union.fields[1].field_type == u32); + + const TestExternUnion = extern union { + foo: &c_void, + }; + + const extern_union_info = @typeInfo(TestExternUnion); + assert(extern_union_info.Union.layout == TypeInfo.ContainerLayout.Extern); + assert(extern_union_info.Union.tag_type == @typeOf(undefined)); + assert(extern_union_info.Union.fields[0].enum_field == null); + assert(extern_union_info.Union.fields[0].field_type == &c_void); + } +} + +test "type info: struct info" { + comptime { + const struct_info = @typeInfo(TestStruct); + assert(TypeId(struct_info) == TypeId.Struct); + assert(struct_info.Struct.layout == TypeInfo.ContainerLayout.Packed); + assert(struct_info.Struct.fields.len == 3); + assert(struct_info.Struct.fields[1].offset == null); + assert(struct_info.Struct.fields[2].field_type == &TestStruct); + assert(struct_info.Struct.defs.len == 2); + assert(struct_info.Struct.defs[0].is_pub); + assert(!struct_info.Struct.defs[0].data.Fn.is_extern); + assert(struct_info.Struct.defs[0].data.Fn.lib_name == null); + assert(struct_info.Struct.defs[0].data.Fn.return_type == void); + assert(struct_info.Struct.defs[0].data.Fn.fn_type == fn(&const TestStruct)void); + } +} + +const TestStruct = packed struct { + const Self = this; + + fieldA: usize, + fieldB: void, + fieldC: &Self, + + pub fn foo(self: &const Self) void {} +}; + +test "type info: function type info" { + comptime { + const fn_info = @typeInfo(@typeOf(foo)); + assert(TypeId(fn_info) == TypeId.Fn); + assert(fn_info.Fn.calling_convention == TypeInfo.CallingConvention.Unspecified); + assert(fn_info.Fn.is_generic); + assert(fn_info.Fn.args.len == 2); + assert(fn_info.Fn.is_var_args); + assert(fn_info.Fn.return_type == @typeOf(undefined)); + assert(fn_info.Fn.async_allocator_type == @typeOf(undefined)); + + const test_instance: TestStruct = undefined; + const bound_fn_info = @typeInfo(@typeOf(test_instance.foo)); + assert(TypeId(bound_fn_info) == TypeId.BoundFn); + assert(bound_fn_info.BoundFn.args[0].arg_type == &const TestStruct); + } +} + +fn foo(comptime a: usize, b: bool, args: ...) usize { + return 0; +}