mirror of
https://github.com/RGBCube/serenity
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da25ac0d48
Previously we would treat the empty string as `null`. This caused
JavaScript like this to fail:
```js
var object = {};
try {
object = JSON.parse("");
} catch {}
var array = object.array || [];
```
Since `JSON.parse("")` returned null instead of throwing, it would set
`object` to null and then try and use it instead of using the default
backup value.
53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
test("basic functionality", () => {
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expect(JSON.parse).toHaveLength(2);
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const properties = [
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["5", 5],
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["null", null],
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["true", true],
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["false", false],
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['"test"', "test"],
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['[1,2,"foo"]', [1, 2, "foo"]],
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['{"foo":1,"bar":"baz"}', { foo: 1, bar: "baz" }],
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];
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properties.forEach(testCase => {
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expect(JSON.parse(testCase[0])).toEqual(testCase[1]);
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});
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});
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test("syntax errors", () => {
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[
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undefined,
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NaN,
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-NaN,
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Infinity,
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-Infinity,
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'{ "foo" }',
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'{ foo: "bar" }',
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"[1,2,3,]",
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"[1,2,3, ]",
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'{ "foo": "bar",}',
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'{ "foo": "bar", }',
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"",
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].forEach(test => {
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expect(() => {
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JSON.parse(test);
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}).toThrow(SyntaxError);
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});
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});
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test("negative zero", () => {
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["-0", " \n-0", "-0 \t", "\n\t -0\n ", "-0.0"].forEach(testCase => {
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expect(JSON.parse(testCase)).toEqual(-0.0);
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});
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expect(JSON.parse(-0)).toEqual(0);
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});
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// The underlying parser resolves decimal numbers by storing the decimal portion in an integer
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// This test handles a regression where the decimal portion was only using a u32 vs. u64
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// and would fail to parse.
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test("long decimal parse", () => {
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expect(JSON.parse("1644452550.6489999294281")).toEqual(1644452550.6489999294281);
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});
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