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Add finiteNumber, nonNegativeNumber, and positiveInteger predicates

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Sindre Sorhus 2026-04-08 16:12:51 +07:00
parent ac46b5400d
commit 63be5c0c19
3 changed files with 150 additions and 0 deletions
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96
test/test.ts
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@ -544,6 +544,34 @@ test('is.positiveNumber', () => {
});
});
test('is.finiteNumber', () => {
assert.ok(is.finiteNumber(6));
assert.ok(is.finiteNumber(-6));
assert.ok(is.finiteNumber(0));
assert.ok(is.finiteNumber(1.4));
assert.doesNotThrow(() => {
isAssert.finiteNumber(6);
});
assert.doesNotThrow(() => {
isAssert.finiteNumber(0);
});
assert.strictEqual(is.finiteNumber(Number.POSITIVE_INFINITY), false);
assert.strictEqual(is.finiteNumber(Number.NEGATIVE_INFINITY), false);
assert.strictEqual(is.finiteNumber(Number.NaN), false);
assert.throws(() => {
isAssert.finiteNumber(Number.POSITIVE_INFINITY);
});
assert.throws(() => {
isAssert.finiteNumber(Number.NEGATIVE_INFINITY);
});
assert.throws(() => {
isAssert.finiteNumber(Number.NaN);
});
});
test('is.negativeNumber', () => {
assert.ok(is.negativeNumber(-6));
assert.ok(is.negativeNumber(-1.4));
@ -582,6 +610,62 @@ test('is.negativeNumber', () => {
});
});
test('is.nonNegativeNumber', () => {
assert.ok(is.nonNegativeNumber(0));
assert.ok(is.nonNegativeNumber(6));
assert.ok(is.nonNegativeNumber(1.4));
assert.ok(is.nonNegativeNumber(Number.POSITIVE_INFINITY));
assert.doesNotThrow(() => {
isAssert.nonNegativeNumber(0);
});
assert.doesNotThrow(() => {
isAssert.nonNegativeNumber(6);
});
assert.ok(is.nonNegativeNumber(-0)); // -0 >= 0 is true in JavaScript
assert.strictEqual(is.nonNegativeNumber(-6), false);
assert.strictEqual(is.nonNegativeNumber(-1.4), false);
assert.strictEqual(is.nonNegativeNumber(Number.NEGATIVE_INFINITY), false);
assert.strictEqual(is.nonNegativeNumber(Number.NaN), false);
assert.throws(() => {
isAssert.nonNegativeNumber(-6);
});
assert.throws(() => {
isAssert.nonNegativeNumber(Number.NEGATIVE_INFINITY);
});
});
test('is.positiveInteger', () => {
assert.ok(is.positiveInteger(1));
assert.ok(is.positiveInteger(6));
assert.ok(is.positiveInteger(100));
assert.doesNotThrow(() => {
isAssert.positiveInteger(1);
});
assert.doesNotThrow(() => {
isAssert.positiveInteger(6);
});
assert.strictEqual(is.positiveInteger(0), false);
assert.strictEqual(is.positiveInteger(-1), false);
assert.strictEqual(is.positiveInteger(1.5), false);
assert.strictEqual(is.positiveInteger(Number.POSITIVE_INFINITY), false);
assert.strictEqual(is.positiveInteger(Number.NaN), false);
assert.throws(() => {
isAssert.positiveInteger(0);
});
assert.throws(() => {
isAssert.positiveInteger(-1);
});
assert.throws(() => {
isAssert.positiveInteger(1.5);
});
});
test('is.numericString supplemental', () => {
assert.strictEqual(is.numericString(''), false);
assert.strictEqual(is.numericString(' '), false);
@ -2159,6 +2243,10 @@ test('custom assertion message', () => {
isAssert.falsy(true, message);
}, {message});
assert.throws(() => {
isAssert.finiteNumber(Number.POSITIVE_INFINITY, message);
}, {message});
assert.throws(() => {
isAssert.float32Array(undefined, message);
}, {message});
@ -2259,6 +2347,10 @@ test('custom assertion message', () => {
isAssert.nonEmptyStringAndNotWhitespace(undefined, message);
}, {message});
assert.throws(() => {
isAssert.nonNegativeNumber(-1, message);
}, {message});
assert.throws(() => {
isAssert.null(undefined, message);
}, {message});
@ -2291,6 +2383,10 @@ test('custom assertion message', () => {
isAssert.plainObject(undefined, message);
}, {message});
assert.throws(() => {
isAssert.positiveInteger(0, message);
}, {message});
assert.throws(() => {
isAssert.positiveNumber(undefined, message);
}, {message});