You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
1.8 KiB
88 lines
1.8 KiB
var test = require('tape') |
|
|
|
var Result = require('./index.js') |
|
|
|
test('can create Ok', function t(assert) { |
|
var v = Result.Ok(42) |
|
|
|
assert.equal(!!v, true) |
|
assert.equal(v.v, 42) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('can check for Ok', function t(assert) { |
|
var result = Result.Ok(42) |
|
|
|
assert.equal(Result.isOk(result), true) |
|
assert.equal(Result.Ok(result), 42) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('check for Ok fails for Err', function t(assert) { |
|
var result = Result.Err(new Error('foo')) |
|
|
|
assert.equal(Result.isOk(result), false) |
|
assert.equal(Result.Ok(result), undefined) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('can create Err', function t(assert) { |
|
var err = Result.Err(new Error('foo')) |
|
|
|
assert.equal(!!err, true) |
|
assert.equal(err.err.message, 'foo') |
|
|
|
assert.end() |
|
}) |
|
|
|
test('can check for Err', function t(assert) { |
|
var result = Result.Err(new Error('foo')) |
|
|
|
assert.equal(Result.isErr(result), true) |
|
assert.equal(Result.Err(result).message, 'foo') |
|
|
|
assert.end() |
|
}) |
|
|
|
test('check for Err fails for Ok', function t(assert) { |
|
var result = Result.Ok(42) |
|
|
|
assert.equal(Result.isErr(result), false) |
|
assert.equal(Result.Err(result), undefined) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('Ok can support null value', function t(assert) { |
|
var result = Result.Ok(null) |
|
|
|
assert.equal(!!result, true) |
|
assert.equal(result.v, null) |
|
|
|
assert.equal(Result.isOk(result), true) |
|
assert.equal(Result.Ok(result), null) |
|
|
|
assert.equal(Result.isErr(result), false) |
|
assert.equal(Result.Err(result), undefined) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('Ok throws if you box undefined', function t(assert) { |
|
assert.throws(function () { |
|
Result.Ok(undefined) |
|
}, /Cannot box `undefined` in Result.Ok/) |
|
|
|
assert.end() |
|
}) |
|
|
|
test('Err throws if you box non-error', function t(assert) { |
|
assert.throws(function () { |
|
Result.Err(42) |
|
}, /Cannot box a non-error in Result.Err/) |
|
|
|
assert.end() |
|
})
|
|
|