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const std = @import("std");
const mem = std.mem;
const testing = std.testing;
const StringifyOptions = @import("stringify.zig").StringifyOptions;
const stringify = @import("stringify.zig").stringify;
const stringifyAlloc = @import("stringify.zig").stringifyAlloc;
test "stringify null optional fields" {
const MyStruct = struct {
optional: ?[]const u8 = null,
required: []const u8 = "something",
another_optional: ?[]const u8 = null,
another_required: []const u8 = "something else",
};
try teststringify(
\\{"optional":null,"required":"something","another_optional":null,"another_required":"something else"}
,
MyStruct{},
StringifyOptions{},
);
try teststringify(
\\{"required":"something","another_required":"something else"}
,
MyStruct{},
StringifyOptions{ .emit_null_optional_fields = false },
);
}
test "stringify basic types" {
try teststringify("false", false, StringifyOptions{});
try teststringify("true", true, StringifyOptions{});
try teststringify("null", @as(?u8, null), StringifyOptions{});
try teststringify("null", @as(?*u32, null), StringifyOptions{});
try teststringify("42", 42, StringifyOptions{});
try teststringify("4.2e+01", 42.0, StringifyOptions{});
try teststringify("42", @as(u8, 42), StringifyOptions{});
try teststringify("42", @as(u128, 42), StringifyOptions{});
try teststringify("4.2e+01", @as(f32, 42), StringifyOptions{});
try teststringify("4.2e+01", @as(f64, 42), StringifyOptions{});
try teststringify("\"ItBroke\"", @as(anyerror, error.ItBroke), StringifyOptions{});
}
test "stringify string" {
try teststringify("\"hello\"", "hello", StringifyOptions{});
try teststringify("\"with\\nescapes\\r\"", "with\nescapes\r", StringifyOptions{});
try teststringify("\"with\\nescapes\\r\"", "with\nescapes\r", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\\u0001\"", "with unicode\u{1}", StringifyOptions{});
try teststringify("\"with unicode\\u0001\"", "with unicode\u{1}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{80}\"", "with unicode\u{80}", StringifyOptions{});
try teststringify("\"with unicode\\u0080\"", "with unicode\u{80}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{FF}\"", "with unicode\u{FF}", StringifyOptions{});
try teststringify("\"with unicode\\u00ff\"", "with unicode\u{FF}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{100}\"", "with unicode\u{100}", StringifyOptions{});
try teststringify("\"with unicode\\u0100\"", "with unicode\u{100}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{800}\"", "with unicode\u{800}", StringifyOptions{});
try teststringify("\"with unicode\\u0800\"", "with unicode\u{800}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{8000}\"", "with unicode\u{8000}", StringifyOptions{});
try teststringify("\"with unicode\\u8000\"", "with unicode\u{8000}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{D799}\"", "with unicode\u{D799}", StringifyOptions{});
try teststringify("\"with unicode\\ud799\"", "with unicode\u{D799}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{10000}\"", "with unicode\u{10000}", StringifyOptions{});
try teststringify("\"with unicode\\ud800\\udc00\"", "with unicode\u{10000}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\u{10FFFF}\"", "with unicode\u{10FFFF}", StringifyOptions{});
try teststringify("\"with unicode\\udbff\\udfff\"", "with unicode\u{10FFFF}", StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"/\"", "/", StringifyOptions{});
try teststringify("\"\\/\"", "/", StringifyOptions{ .string = .{ .String = .{ .escape_solidus = true } } });
}
test "stringify many-item sentinel-terminated string" {
try teststringify("\"hello\"", @as([*:0]const u8, "hello"), StringifyOptions{});
try teststringify("\"with\\nescapes\\r\"", @as([*:0]const u8, "with\nescapes\r"), StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
try teststringify("\"with unicode\\u0001\"", @as([*:0]const u8, "with unicode\u{1}"), StringifyOptions{ .string = .{ .String = .{ .escape_unicode = true } } });
}
test "stringify enums" {
const E = enum {
foo,
bar,
};
try teststringify("\"foo\"", E.foo, .{});
try teststringify("\"bar\"", E.bar, .{});
}
test "stringify tagged unions" {
const T = union(enum) {
nothing,
foo: u32,
bar: bool,
};
try teststringify("{\"nothing\":{}}", T{ .nothing = {} }, StringifyOptions{});
try teststringify("{\"foo\":42}", T{ .foo = 42 }, StringifyOptions{});
try teststringify("{\"bar\":true}", T{ .bar = true }, StringifyOptions{});
}
test "stringify struct" {
try teststringify("{\"foo\":42}", struct {
foo: u32,
}{ .foo = 42 }, StringifyOptions{});
}
test "stringify struct with string as array" {
try teststringify("{\"foo\":\"bar\"}", .{ .foo = "bar" }, StringifyOptions{});
try teststringify("{\"foo\":[98,97,114]}", .{ .foo = "bar" }, StringifyOptions{ .string = .Array });
}
test "stringify struct with indentation" {
try teststringify(
\\{
\\ "foo": 42,
\\ "bar": [
\\ 1,
\\ 2,
\\ 3
\\ ]
\\}
,
struct {
foo: u32,
bar: [3]u32,
}{
.foo = 42,
.bar = .{ 1, 2, 3 },
},
StringifyOptions{
.whitespace = .{},
},
);
try teststringify(
"{\n\t\"foo\":42,\n\t\"bar\":[\n\t\t1,\n\t\t2,\n\t\t3\n\t]\n}",
struct {
foo: u32,
bar: [3]u32,
}{
.foo = 42,
.bar = .{ 1, 2, 3 },
},
StringifyOptions{
.whitespace = .{
.indent = .tab,
.separator = false,
},
},
);
try teststringify(
\\{"foo":42,"bar":[1,2,3]}
,
struct {
foo: u32,
bar: [3]u32,
}{
.foo = 42,
.bar = .{ 1, 2, 3 },
},
StringifyOptions{
.whitespace = .{
.indent = .none,
.separator = false,
},
},
);
}
test "stringify struct with void field" {
try teststringify("{\"foo\":42}", struct {
foo: u32,
bar: void = {},
}{ .foo = 42 }, StringifyOptions{});
}
test "stringify array of structs" {
const MyStruct = struct {
foo: u32,
};
try teststringify("[{\"foo\":42},{\"foo\":100},{\"foo\":1000}]", [_]MyStruct{
MyStruct{ .foo = 42 },
MyStruct{ .foo = 100 },
MyStruct{ .foo = 1000 },
}, StringifyOptions{});
}
test "stringify struct with custom stringifier" {
try teststringify("[\"something special\",42]", struct {
foo: u32,
const Self = @This();
pub fn jsonStringify(
value: Self,
options: StringifyOptions,
out_stream: anytype,
) !void {
_ = value;
try out_stream.writeAll("[\"something special\",");
try stringify(42, options, out_stream);
try out_stream.writeByte(']');
}
}{ .foo = 42 }, StringifyOptions{});
}
test "stringify vector" {
try teststringify("[1,1]", @as(@Vector(2, u32), @splat(1)), StringifyOptions{});
}
test "stringify tuple" {
try teststringify("[\"foo\",42]", std.meta.Tuple(&.{ []const u8, usize }){ "foo", 42 }, StringifyOptions{});
}
fn teststringify(expected: []const u8, value: anytype, options: StringifyOptions) !void {
const ValidationWriter = struct {
const Self = @This();
pub const Writer = std.io.Writer(*Self, Error, write);
pub const Error = error{
TooMuchData,
DifferentData,
};
expected_remaining: []const u8,
fn init(exp: []const u8) Self {
return .{ .expected_remaining = exp };
}
pub fn writer(self: *Self) Writer {
return .{ .context = self };
}
fn write(self: *Self, bytes: []const u8) Error!usize {
if (self.expected_remaining.len < bytes.len) {
std.debug.print(
\\====== expected this output: =========
\\{s}
\\======== instead found this: =========
\\{s}
\\======================================
, .{
self.expected_remaining,
bytes,
});
return error.TooMuchData;
}
if (!mem.eql(u8, self.expected_remaining[0..bytes.len], bytes)) {
std.debug.print(
\\====== expected this output: =========
\\{s}
\\======== instead found this: =========
\\{s}
\\======================================
, .{
self.expected_remaining[0..bytes.len],
bytes,
});
return error.DifferentData;
}
self.expected_remaining = self.expected_remaining[bytes.len..];
return bytes.len;
}
};
var vos = ValidationWriter.init(expected);
try stringify(value, options, vos.writer());
if (vos.expected_remaining.len > 0) return error.NotEnoughData;
}
test "stringify alloc" {
const allocator = std.testing.allocator;
const expected =
\\{"foo":"bar","answer":42,"my_friend":"sammy"}
;
const actual = try stringifyAlloc(allocator, .{ .foo = "bar", .answer = 42, .my_friend = "sammy" }, .{});
defer allocator.free(actual);
try std.testing.expectEqualStrings(expected, actual);
}
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