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2afec5cf53
Uses promises for failure and success states. Takes optional stderr and stdout callbacks for incremental reading.
48 lines
1.7 KiB
CoffeeScript
48 lines
1.7 KiB
CoffeeScript
ChildProcess = require 'child-process'
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fdescribe 'Child Processes', ->
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describe ".exec(command, options)", ->
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it "returns a promise that resolves to stdout and stderr", ->
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waitsForPromise ->
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cmd = "echo 'good' && echo 'bad' >&2"
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ChildProcess.exec(cmd).done (stdout, stderr) ->
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expect(stdout).toBe 'good\n'
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expect(stderr).toBe 'bad\n'
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describe "when `options` contains a stdout function", ->
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it "calls the stdout function when new data is received", ->
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stderrHandler = jasmine.createSpy "stderrHandler"
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cmd = "echo '1111' >&2 && sleep .1 && echo '2222' >&2"
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ChildProcess.exec(cmd, stderr: stderrHandler)
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waitsFor ->
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stderrHandler.callCount > 1
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runs ->
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expect(stderrHandler.argsForCall[0][0]).toBe "1111\n"
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expect(stderrHandler.argsForCall[1][0]).toBe "2222\n"
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it "calls the stderr function when new data is received", ->
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stdoutHandler = jasmine.createSpy "stdoutHandler"
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cmd = "echo 'first' && sleep .1 && echo 'second' && sleep .1 && echo 'third'"
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ChildProcess.exec(cmd, stdout: stdoutHandler)
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waitsFor ->
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stdoutHandler.callCount > 2
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runs ->
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expect(stdoutHandler.argsForCall[0][0]).toBe "first\n"
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expect(stdoutHandler.argsForCall[1][0]).toBe "second\n"
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expect(stdoutHandler.argsForCall[2][0]).toBe "third\n"
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describe "when the command fails", ->
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it "executes the callback with error set to the exit status", ->
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waitsForPromise ->
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cmd = "exit 2"
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ChildProcess.exec(cmd).fail (error) ->
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expect(error.exitStatus).toBe 2
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