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Add values.

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This commit is contained in:
David Braun 2017-10-18 14:38:35 -04:00
parent f07e849662
commit b9901df29a
3 changed files with 46 additions and 31 deletions
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60
test/index.js
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@ -18,16 +18,6 @@ const assertRejects = async (callback, reason) => {
assert.fail(null, reason, `Missing expected rejection.`);
};
const toArray = async channel => {
const array = [];
await channel.forEach(item => {
array.push(item);
});
return array;
};
describe(`Channel`, function() {
it(`allows the use of new`, function() {
return new Channel();
@ -58,7 +48,7 @@ describe(`Channel`, function() {
describe(`from`, function() {
it(`iterable`, async function() {
assert.deepEqual(await toArray(Channel.from([0, 1, 2])), [0, 1, 2]);
assert.deepEqual(await Channel.from([0, 1, 2]).values(), [0, 1, 2]);
});
it(`Node.js's stream.readOnly`, async function() {
@ -66,7 +56,7 @@ describe(`Channel`, function() {
readOnly.write(0);
readOnly.write(1);
readOnly.end(2);
assert.deepEqual(await toArray(Channel.from(readOnly)), [0, 1, 2]);
assert.deepEqual(await Channel.from(readOnly).values(), [0, 1, 2]);
});
});
@ -76,7 +66,7 @@ describe(`Channel`, function() {
});
it(`of`, async function() {
assert.deepEqual(await toArray(Channel.of(0, 1, 2)), [0, 1, 2]);
assert.deepEqual(await Channel.of(0, 1, 2).values(), [0, 1, 2]);
});
describe(`select`, function() {
@ -144,21 +134,21 @@ describe(`functional interface`, async function() {
describe(`slice`, function() {
it(`full application`, async function() {
assert.deepEqual(
await toArray(Channel.slice(1, 4, Channel.of(0, 1, 2, 3, 4))),
await Channel.slice(1, 4, Channel.of(0, 1, 2, 3, 4)).values(),
[1, 2, 3]
);
});
it(`single argument application`, async function() {
assert.deepEqual(
await toArray(Channel.slice(1)(4)(Channel.of(0, 1, 2, 3, 4))),
await Channel.slice(1)(4)(Channel.of(0, 1, 2, 3, 4)).values(),
[1, 2, 3]
);
});
it(`double argument application`, async function() {
assert.deepEqual(
await toArray(Channel.slice(1, 4)(Channel.of(0, 1, 2, 3, 4))),
await Channel.slice(1, 4)(Channel.of(0, 1, 2, 3, 4)).values(),
[1, 2, 3]
);
});
@ -200,9 +190,9 @@ describe(`Channel object`, function() {
it(`filter`, async function() {
assert.deepEqual(
await toArray(
Channel.of(0, 1, 2, 3, 4, 5).filter(value => value % 2 !== 0)
),
await Channel.of(0, 1, 2, 3, 4, 5)
.filter(value => value % 2 !== 0)
.values(),
[1, 3, 5]
);
});
@ -214,7 +204,7 @@ describe(`Channel object`, function() {
output.close();
})();
assert.deepEqual(await toArray(output), [0, 1, 2]);
assert.deepEqual(await output.values(), [0, 1, 2]);
});
it(`join`, async function() {
@ -223,9 +213,9 @@ describe(`Channel object`, function() {
it(`map`, async function() {
assert.deepEqual(
await toArray(
Channel.of(`a`, `b`, `c`).map(value => value.toUpperCase())
),
await Channel.of(`a`, `b`, `c`)
.map(value => value.toUpperCase())
.values(),
[`A`, `B`, `C`]
);
});
@ -336,15 +326,21 @@ describe(`Channel object`, function() {
describe(`slice`, function() {
it(`start`, async function() {
assert.deepEqual(await toArray(Channel.of(0, 1, 2).slice(1)), [1, 2]);
assert.deepEqual(
await Channel.of(0, 1, 2)
.slice(1)
.values(),
[1, 2]
);
});
it(`end`, async function() {
assert.deepEqual(await toArray(Channel.of(0, 1, 2, 3, 4).slice(1, 4)), [
1,
2,
3
]);
assert.deepEqual(
await Channel.of(0, 1, 2, 3, 4)
.slice(1, 4)
.values(),
[1, 2, 3]
);
});
});
@ -352,7 +348,7 @@ describe(`Channel object`, function() {
const even = value => value % 2 === 0;
const channel = Channel.of(0, 1, 2);
assert(await channel.some(even));
assert.deepEqual(await toArray(channel), [1, 2]);
assert.deepEqual(await channel.values(), [1, 2]);
assert(!await Channel.of(1, 3, 5).some(even));
});
@ -378,6 +374,10 @@ describe(`Channel object`, function() {
assert.equal(channel.value, undefined);
});
it(`values`, async function() {
assert.deepEqual(await Channel.of(0, 1, 2).values(), [0, 1, 2]);
});
describe(`writeOnly`, function() {
it(`provides only write methods`, async function() {
const channel = Channel();