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Fix struct() and add mask()

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This commit is contained in:
alex 2022-02-19 17:14:11 +00:00
parent 7b34f3f524
commit 0039b60020
2 changed files with 44 additions and 6 deletions
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26
test/pattern.test.mjs
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@ -251,6 +251,18 @@ describe('Pattern', function() {
it('Can restructure a pattern', function() {
assert.deepStrictEqual(
sequence("a", "b").struct(sequence(true, true, true)).firstCycle,
[hap(ts(0,third), ts(0,third), "a"),
hap(ts(third, twothirds), ts(third, 0.5), "a"),
hap(ts(third, twothirds), ts(0.5, twothirds), "b"),
hap(ts(twothirds, 1), ts(twothirds, 1), "b")
]
)
})
})
describe('mask()', function() {
it('Can fragment a pattern', function() {
assert.deepStrictEqual(
sequence("a", "b").mask(sequence(true, true, true)).firstCycle,
[hap(ts(0, 0.5), ts(0,third), "a"),
hap(ts(0, 0.5), ts(third, 0.5), "a"),
hap(ts(0.5, 1), ts(0.5, twothirds), "b"),
@ -258,11 +270,21 @@ describe('Pattern', function() {
]
)
})
it('Can mask off parts of a pattern', function() {
assert.deepStrictEqual(
sequence(["a", "b"], "c").mask(sequence(true, false)).firstCycle,
sequence(["a","b"], silence).firstCycle
)
assert.deepStrictEqual(
sequence("a").mask(sequence(true, false)).firstCycle,
[hap(ts(0,1),ts(0,0.5), "a")]
)
})
})
describe('inv()', function() {
describe('invert()', function() {
it('Can invert a binary pattern', function() {
assert.deepStrictEqual(
sequence(true, false, [true, false]).inv().firstCycle,
sequence(true, false, [true, false]).invert().firstCycle,
sequence(false, true, [false, true]).firstCycle
)
})