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test: validate util.format when the value is 'Infinity'
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PR-URL: #32573
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Andrés M. Gómez authored and BethGriggs committed Apr 7, 2020
1 parent 1bec3ac commit 217cd96
Showing 1 changed file with 8 additions and 0 deletions.
8 changes: 8 additions & 0 deletions test/parallel/test-util-format.js
Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,8 @@ assert.strictEqual(util.format('%d', -0.0), '-0');
assert.strictEqual(util.format('%d', ''), '0');
assert.strictEqual(util.format('%d', ' -0.000'), '-0');
assert.strictEqual(util.format('%d', Symbol()), 'NaN');
assert.strictEqual(util.format('%d', Infinity), 'Infinity');
assert.strictEqual(util.format('%d', -Infinity), '-Infinity');
assert.strictEqual(util.format('%d %d', 42, 43), '42 43');
assert.strictEqual(util.format('%d %d', 42), '42 %d');
assert.strictEqual(
Expand All @@ -81,6 +83,8 @@ assert.strictEqual(util.format('%i', '42.0'), '42');
assert.strictEqual(util.format('%i', 1.5), '1');
assert.strictEqual(util.format('%i', -0.5), '-0');
assert.strictEqual(util.format('%i', ''), 'NaN');
assert.strictEqual(util.format('%i', Infinity), 'NaN');
assert.strictEqual(util.format('%i', -Infinity), 'NaN');
assert.strictEqual(util.format('%i', Symbol()), 'NaN');
assert.strictEqual(util.format('%i %i', 42, 43), '42 43');
assert.strictEqual(util.format('%i %i', 42), '42 %i');
Expand Down Expand Up @@ -120,6 +124,8 @@ assert.strictEqual(util.format('%f', Math.PI), '3.141592653589793');
assert.strictEqual(util.format('%f', ''), 'NaN');
assert.strictEqual(util.format('%f', Symbol('foo')), 'NaN');
assert.strictEqual(util.format('%f', 5n), '5');
assert.strictEqual(util.format('%f', Infinity), 'Infinity');
assert.strictEqual(util.format('%f', -Infinity), '-Infinity');
assert.strictEqual(util.format('%f %f', 42, 43), '42 43');
assert.strictEqual(util.format('%f %f', 42), '42 %f');

Expand All @@ -141,6 +147,8 @@ assert.strictEqual(util.format('%s', { a: [1, 2, 3] }), '{ a: [Array] }');
assert.strictEqual(util.format('%s', { toString() { return 'Foo'; } }), 'Foo');
assert.strictEqual(util.format('%s', { toString: 5 }), '{ toString: 5 }');
assert.strictEqual(util.format('%s', () => 5), '() => 5');
assert.strictEqual(util.format('%s', Infinity), 'Infinity');
assert.strictEqual(util.format('%s', -Infinity), '-Infinity');

// String format specifier including `toString` properties on the prototype.
{
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