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|
# We test some ground values for json import/export.
def test_parse_error(name, f, msg) =
error_caught = ref(false)
try
print(f())
catch err : [error.json] do
if
err.kind != "json"
then
print(
"parse error test #{name} failed: wrong error kind, got: #{err.kind}, \
expected: json"
)
test.fail()
end
if
err.message != msg
then
print(
"parse error test #{name} failed: wrong error message, got: #{
err.message
}, expected: #{msg}"
)
test.fail()
end
error_caught := true
end
if
not error_caught()
then
print(
"parse error test #{name} failed: no error caught"
)
test.fail()
end
end
def f() =
test.equal(json.stringify(()), '[]')
test.equal(json.stringify("aa'bb"), "\"aa'bb\"")
test.equal(json.stringify("a"), '"a"')
test.equal(json.stringify("©"), '"©"')
test.equal(json.stringify('"'), '"\\""')
test.equal(json.stringify('\\'), '"\\\\"')
test.equal(json.stringify(json5=true, infinity), 'Infinity')
test.equal(json.stringify(json5=true, (0. - infinity)), '-Infinity')
test.equal(json.stringify(json5=true, nan), 'NaN')
let b = json.object()
b.add("b", 1)
s = json.stringify({a=null({a=1}), b=null(b)})
test.equal(
s,
"{ \"a\": { \"a\": 1 }, \"b\": { \"b\": 1 } }"
)
data = "123"
let json.parse (x : int) = data
test.equal(x, 123)
data =
'{
"foo": 34.24,
"gni gno": true,
"nested": {
"tuple": [123, 3.14, false],
"list": [44.0, 55, 66.12],
"nullable_list": [12.33, 23, "aabb"],
"object_as_list": {
"foo": 123,
"gni": 456.0,
"gno": 3.14
},
"arbitrary object key ✨": true
},
"extra": "ignored"
}'
let json.parse (x :
{
foo: float,
"gni gno" as gni_gno: bool,
nested: {
tuple: (_ * float),
list: [float],
nullable_list: [int?],
object_as_list: [(string*float)] as json.object,
"arbitrary object key ✨" as arbitrary_object_key: bool,
not_present: bool?
}
}
) = data
test.equal(
x,
{
foo=34.24,
gni_gno=true,
nested=
{
tuple=(null, 3.14),
list=[44., 55., 66.12],
nullable_list=[null, 23, null],
object_as_list=[("foo", 123.), ("gni", 456.0), ("gno", 3.14)],
arbitrary_object_key=true,
not_present=null
}
}
)
# Pattern extraction with json parsing
let json.parse {
foo,
nested = {tuple = (t1, t2, t3), nullable_list = [l1, ...tl]}
} = data
test.equal(foo, 34.24)
test.equal(t1, 123)
test.equal(t2, 3.14)
test.equal(t3, false)
test.equal(l1, null)
test.equal(tl, [23, null])
let json.parse x = data
ignore(x.foo + 1.0)
let (x, y, _) = x.nested.tuple
ignore(x + 1)
ignore(y + 3.14)
def failed_array() =
data = "[]"
let json.parse (val : {x: int}) = data
print(val.x)
end
test_parse_error(
"failed array parsing",
failed_array,
"Parsing error: json value cannot be parsed as type {x : int}"
)
def failed_runtime() =
let json.parse x = data
ignore(x.foo + 1.0)
let (x, _, _) = x.nested.tuple
ignore(x ^ "foo")
end
test_parse_error(
"failed runtime",
failed_runtime,
"Parsing error: json value cannot be parsed as type {nested: {tuple: \
(string,_,_), _}, _}"
)
def nested_tuple() =
let json.parse (x :
{
nested: {
tuple: (int * float * int * bool),
list: [float],
nullable_list: [int?],
object_as_list: [(string*float)] as json.object,
"arbitrary object key ✨" as arbitrary_object_key: bool,
not_present: bool?
}
}
) = data
ignore(data)
end
test_parse_error(
"nested tuple",
nested_tuple,
"Parsing error: json value cannot be parsed as type {nested: {tuple: \
(_,_,int,_), _}, _}"
)
def nested_list() =
let json.parse (x :
{
nested: {
tuple: (int * float * bool),
list: [int],
nullable_list: [int?],
object_as_list: [(string*float)] as json.object,
"arbitrary object key ✨" as arbitrary_object_key: bool,
not_present: bool?
}
}
) = data
ignore(data)
end
test_parse_error(
"nested list",
nested_list,
"Parsing error: json value cannot be parsed as type {nested: {list: [int], \
_}, _}"
)
def nested_object() =
let json.parse (x :
{
nested: {
tuple: (int * float * bool),
list: [float],
nullable_list: [int],
object_as_list: [(string*float)] as json.object,
"arbitrary object key ✨" as arbitrary_object_key: bool,
not_present: bool?
}
}
) = data
ignore(data)
end
test_parse_error(
"nested object",
nested_object,
'Parsing error: json value cannot be parsed as type {nested: {nullable_list: \
[int], _}, _}'
)
data =
'{"aabbcc": 34, "ddeerr": 54 }'
let json.parse (x : [(string*int)] as json.object) = data
test.equal(list.assoc("aabbcc", x), 34)
test.equal(list.assoc("ddeerr", x), 54)
data =
'{ "foo": 123 }'
let json.parse (x : {foo: string}?) = data
test.equal(x, null)
data =
'[ "gni", 123 ]'
let json.parse (x : [int]?) = data
test.equal(x, null)
let json.parse (x : (string * int * bool)?) = data
test.equal(x, null)
data =
'[ "gni", 123, "gno" ]'
let json.parse (x : (string * int)) = data
test.equal(x, ("gni", 123))
data = '{
"foo": {
"gni": {
"bla": 123
}
}
}'
let json.parse x = data
test.equal(x?.foo.gni?.bla, null(123))
data = '{
"foo": {}
}'
let json.parse x = data
test.equal(x?.foo.gni?.bla, null)
data = '{}'
let json.parse x = data
test.equal(x?.foo?.gni?.bla, null)
# Test escaping of invalid utf8 strings.
s =
"S\x00e\x00k\x00e\x00r\x00n\x00u\x00p\x00 \
\x00K\x00i\x00n\x00g\x00e\x00r\x00p\x00\xE2\x00"
test.equal(
json.stringify(s),
"\"S\\u0000e\\u0000k\\u0000e\\u0000r\\u0000n\\u0000u\\u0000p\\u0000 \
\\u0000K\\u0000i\\u0000n\\u0000g\\u0000e\\u0000r\\u0000p\\u0000\\uFFFD\""
)
j = json.object()
j.add("foo", 1)
j.add("bla", "bar")
j.add("baz", 3.14)
j.add("key_with_methods", "value".{method=123})
j.add("record", {a=1, b="ert"})
j.remove("foo")
j = json.stringify(j)
test.equal(
j,
'{
"record": { "a": 1, "b": "ert" },
"key_with_methods": "value",
"bla": "bar",
"baz": 3.14
}'
)
e = ref(null)
def f(data) =
try
d = json.stringify(data)
ignore(d)
catch err do
e := err
end
end
f(infinity)
if not null.defined(e()) then test.fail() end
test.equal(json.stringify(json.value(123)), "123")
test.equal(json.stringify(json.value(true)), "true")
test.pass()
end
test.check(f)
|
