forkjoin

test = require 'tape' fj = require './forkjoin.js' isFunction = (f) -> 'function' is typeof f test 'async', (t) -> t.plan 2 add = fj.async (a, b) -> a + b t.ok isFunction add add 36, 6, (error, result) -> t.equal 42, result test 'async - failure', (t) -> t.plan 1 add = fj.async (a, b) -> throw new Error 'meh' add 36, 6, (error, result) -> t.equal error.message, 'meh' test 'isFuture', (t) -> t.plan 7 t.notOk fj.isFuture undefined t.notOk fj.isFuture null t.notOk fj.isFuture {} t.notOk fj.isFuture 42 t.notOk fj.isFuture 'foo' t.notOk fj.isFuture new Date() add = fj.task (a, b, go) -> go null, a + b sum = add 36, 6 t.ok fj.isFuture sum test 'resolve', (t) -> t.plan 4 add = fj.task (a, b, go) -> go null, a + b sum = add 36, 6 fj.resolve sum, (error, answer) -> t.equal error, null t.equal answer, 42 fj.resolve 42, (error, answer) -> t.equal error, null t.equal answer, 42 test 'fork non-function', (t) -> t.plan 1 t.throws -> fj.fork undefined test 'task non-function', (t) -> t.plan 1 t.throws -> fj.task undefined test 'task - fulfilled', (t) -> t.plan 26 add = fj.task (a, b, go) -> go null, a + b sum = add 36, 6 t.ok isFunction sum.method t.deepEqual sum.args, [ 36, 6 ] t.ok sum.error is undefined t.ok sum.result is undefined t.equal sum.isFuture, yes t.equal sum.fulfilled, no t.equal sum.rejected, no t.equal sum.settled, no t.equal sum.pending, yes # evaluate sum (error, result) -> t.equal error, null t.equal 42, result t.ok sum.error is undefined t.ok sum.result is 42 t.equal sum.fulfilled, yes t.equal sum.rejected, no t.equal sum.settled, yes t.equal sum.pending, no # evaluate again sum (error, result) -> t.equal error, null t.equal 42, result t.ok sum.error is undefined t.ok sum.error is undefined t.ok sum.result is 42 t.equal sum.fulfilled, yes t.equal sum.rejected, no t.equal sum.settled, yes t.equal sum.pending, no test 'task - rejected', (t) -> t.plan 25 add = fj.task (a, b, go) -> go new Error 'meh' sum = add 36, 6 t.ok isFunction sum.method t.deepEqual sum.args, [ 36, 6 ] t.ok sum.error is undefined t.ok sum.result is undefined t.equal sum.isFuture, yes t.equal sum.fulfilled, no t.equal sum.rejected, no t.equal sum.settled, no t.equal sum.pending, yes # evaluate sum (error, result) -> t.equal error.message, 'meh' t.ok result is undefined t.ok sum.error.message, 'meh' t.ok sum.result is undefined t.equal sum.fulfilled, no t.equal sum.rejected, yes t.equal sum.settled, yes t.equal sum.pending, no # evaluate again sum (error, result) -> t.equal error.message, 'meh' t.ok result is undefined t.ok sum.error.message, 'meh' t.ok sum.result is undefined t.equal sum.fulfilled, no t.equal sum.rejected, yes t.equal sum.settled, yes t.equal sum.pending, no test 'join - empty', (t) -> t.plan 2 fj.join [], (error, result) -> t.equal error, null t.deepEqual result, [] test 'join - future of futures', (t) -> t.plan 2 square = fj.task fj.async (a) -> a * a pow4 = fj.task fj.async (a) -> square square a pow16 = fj.task fj.async (a) -> pow4 pow4 a twoPow16 = pow16 2 twoPow16 (error, result) -> t.equal error, null t.equal result, Math.pow 2, 16 test 'task - futures', (t) -> t.plan 2 uppercase = fj.task (a, go) -> go null, a.toUpperCase() concat = fj.task (a, b, go) -> go null, a + b foo = uppercase 'foo' bar = uppercase 'bar' foobar = concat foo, bar foobar (error, result) -> t.equal error, null t.equal result, 'FOOBAR' test 'task - failing futures', (t) -> t.plan 1 uppercase = fj.task (a, go) -> go new Error 'meh' concat = fj.task (a, b, go) -> go null, a + b foo = uppercase 'foo' bar = uppercase 'bar' foobar = concat foo, bar foobar (error, result) -> t.equal error.message, 'meh' test 'seq', (t) -> t.plan 2 words = [ 'qux', 'quux', 'quuux' ] lengthOf = fj.task (a, go) -> go null, a.length wordAt = fj.task (i, go) -> go null, words[i] wordLengths = fj.seq (lengthOf wordAt i for i in [0 ... 3]) wordLengths (error, wordLengths) -> t.equal error, null t.deepEqual wordLengths, [ 3, 4, 5 ] test 'collect', (t) -> t.plan 2 words = [ 'qux', 'quux', 'quuux' ] lengthOf = fj.task (a, go) -> go null, a.length wordAt = fj.task (i, go) -> go null, words[i] wordLengths = fj.collect (lengthOf wordAt i for i in [0 ... 3]) wordLengths (error, wordLengths) -> t.equal error, null t.deepEqual wordLengths, [ 3, 4, 5 ] test 'seq - failing futures', (t) -> t.plan 1 words = [ 'qux', 'quux', 'quuux' ] lengthOf = fj.task (a, go) -> go null, a.length wordAt = fj.task (i, go) -> go new Error 'meh' wordLengths = fj.seq (lengthOf wordAt i for i in [0 ... 3]) wordLengths (error, wordLengths) -> t.equal error.message, 'meh' test 'collect - failing futures', (t) -> t.plan 1 words = [ 'qux', 'quux', 'quuux' ] lengthOf = fj.task (a, go) -> go null, a.length wordAt = fj.task (i, go) -> go new Error 'meh' wordLengths = fj.collect (lengthOf wordAt i for i in [0 ... 3]) wordLengths (error, wordLengths) -> t.equal error.message, 'meh' test 'lift', (t) -> t.plan 2 echo = fj.task fj.async (a) -> a foo = echo 'foo' bar = echo 'bar' baz = echo 'baz' joined = fj.lift foo, bar, baz, (foo, bar, baz) -> foo + bar + baz joined (error, result) -> t.equal error, null t.equal result, 'foobarbaz' test 'math example', (t) -> t.plan 2 twice = fj.task fj.async (a) -> a * 2 square = fj.task fj.async (a) -> a * a times10 = fj.task fj.async (a) -> a * 10 answer = times10 square twice 4 answer (error, result) -> t.equal error, null t.equal result, 640 test 'wordcount example', (t) -> t.plan 1 tokenize = fj.task fj.async (sentence) -> sentence.split /\s+/g countWords = fj.task fj.async (words) -> countMap = {} for word in words countMap[word] = if word of countMap then countMap[word] + 1 else 1 countMap combineCounts = fj.task fj.async (countMaps) -> counts = {} for countMap in countMaps for word, count of countMap counts[word] = if word of counts then counts[word] + count else count counts sentences = [ 'hello world bye world' 'hello forkjoin goodbye forkjoin' ] allCounts = combineCounts fj.map sentences, (sentence) -> countWords tokenize sentence allCounts (error, counts) -> t.deepEqual counts, hello: 2 world: 2 bye: 1 forkjoin: 2 goodbye: 1