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Test Info:
const { CanonicalJSON } = ChromeUtils.importESModule(
"resource://gre/modules/CanonicalJSON.sys.mjs"
);
add_task(async function test_canonicalJSON_should_preserve_array_order() {
const input = ["one", "two", "three"];
// No sorting should be done on arrays.
Assert.equal(CanonicalJSON.stringify(input), '["one","two","three"]');
});
add_task(async function test_canonicalJSON_orders_object_keys() {
const input = [
{
b: ["two", "three"],
a: ["zero", "one"],
},
];
Assert.equal(
CanonicalJSON.stringify(input),
'[{"a":["zero","one"],"b":["two","three"]}]'
);
});
add_task(async function test_canonicalJSON_orders_nested_object_keys() {
const input = [
{
b: { d: "d", c: "c" },
a: { b: "b", a: "a" },
},
];
Assert.equal(
CanonicalJSON.stringify(input),
'[{"a":{"a":"a","b":"b"},"b":{"c":"c","d":"d"}}]'
);
});
add_task(async function test_canonicalJSON_escapes_unicode_values() {
Assert.equal(CanonicalJSON.stringify([{ key: "✓" }]), '[{"key":"\\u2713"}]');
// Unicode codepoints should be output in lowercase.
Assert.equal(CanonicalJSON.stringify([{ key: "é" }]), '[{"key":"\\u00e9"}]');
});
add_task(async function test_canonicalJSON_escapes_unicode_object_keys() {
Assert.equal(
CanonicalJSON.stringify([{ é: "check" }]),
'[{"\\u00e9":"check"}]'
);
});
add_task(async function test_canonicalJSON_does_not_alter_input() {
const records = [
{ foo: "bar", last_modified: "12345", id: "1" },
{ bar: "baz", last_modified: "45678", id: "2" },
];
const serializedJSON = JSON.stringify(records);
CanonicalJSON.stringify(records);
Assert.equal(JSON.stringify(records), serializedJSON);
});
add_task(async function test_canonicalJSON_preserves_data() {
const records = [
{ foo: "bar", last_modified: "12345", id: "1" },
{ bar: "baz", last_modified: "45678", id: "2" },
];
const expected =
'[{"foo":"bar","id":"1","last_modified":"12345"},' +
'{"bar":"baz","id":"2","last_modified":"45678"}]';
Assert.equal(CanonicalJSON.stringify(records), expected);
});
add_task(async function test_canonicalJSON_does_not_add_space_separators() {
const records = [
{ foo: "bar", last_modified: "12345", id: "1" },
{ bar: "baz", last_modified: "45678", id: "2" },
];
const serialized = CanonicalJSON.stringify(records);
Assert.ok(!serialized.includes(" "));
});
add_task(async function test_canonicalJSON_serializes_empty_object() {
Assert.equal(CanonicalJSON.stringify({}), "{}");
});
add_task(async function test_canonicalJSON_serializes_empty_array() {
Assert.equal(CanonicalJSON.stringify([]), "[]");
});
add_task(async function test_canonicalJSON_serializes_NaN() {
Assert.equal(CanonicalJSON.stringify(NaN), "null");
});
add_task(async function test_canonicalJSON_serializes_inf() {
// This isn't part of the JSON standard.
Assert.equal(CanonicalJSON.stringify(Infinity), "null");
});
add_task(async function test_canonicalJSON_serializes_empty_string() {
Assert.equal(CanonicalJSON.stringify(""), '""');
});
add_task(async function test_canonicalJSON_escapes_backslashes() {
Assert.equal(CanonicalJSON.stringify("This\\and this"), '"This\\\\and this"');
});
add_task(async function test_canonicalJSON_handles_signed_zeros() {
// do_check_eq doesn't support comparison of -0 and 0 properly.
Assert.ok(CanonicalJSON.stringify(-0) === "-0");
Assert.ok(CanonicalJSON.stringify(0) === "0");
});
add_task(async function test_canonicalJSON_with_deeply_nested_dicts() {
const records = [
{
a: {
b: "b",
a: "a",
c: {
b: "b",
a: "a",
c: ["b", "a", "c"],
d: { b: "b", a: "a" },
id: "1",
e: 1,
f: [2, 3, 1],
g: {
2: 2,
3: 3,
1: {
b: "b",
a: "a",
c: "c",
},
},
},
},
id: "1",
},
];
const expected =
'[{"a":{"a":"a","b":"b","c":{"a":"a","b":"b","c":["b","a","c"],' +
'"d":{"a":"a","b":"b"},"e":1,"f":[2,3,1],"g":{' +
'"1":{"a":"a","b":"b","c":"c"},"2":2,"3":3},"id":"1"}},"id":"1"}]';
Assert.equal(CanonicalJSON.stringify(records), expected);
});
add_task(async function test_canonicalJSON_should_use_scientific_notation() {
/*
We globally follow the Python float representation, except for exponents < 10
where we drop the leading zero
*/
Assert.equal(CanonicalJSON.stringify(0.00099), "0.00099");
Assert.equal(CanonicalJSON.stringify(0.000011), "0.000011");
Assert.equal(CanonicalJSON.stringify(0.0000011), "0.0000011");
Assert.equal(CanonicalJSON.stringify(0.000001), "0.000001");
Assert.equal(CanonicalJSON.stringify(0.00000099), "9.9e-7");
Assert.equal(CanonicalJSON.stringify(0.0000001), "1e-7");
Assert.equal(CanonicalJSON.stringify(0.000000930258908), "9.30258908e-7");
Assert.equal(CanonicalJSON.stringify(0.00000000000068272), "6.8272e-13");
Assert.equal(
CanonicalJSON.stringify(Math.pow(10, 20)),
"100000000000000000000"
);
Assert.equal(CanonicalJSON.stringify(Math.pow(10, 21)), "1e+21");
Assert.equal(
CanonicalJSON.stringify(Math.pow(10, 15) + 0.1),
"1000000000000000.1"
);
Assert.equal(
CanonicalJSON.stringify(Math.pow(10, 16) * 1.1),
"11000000000000000"
);
});