jest.dontMock '../misc.coffee'
misc = require '../misc.coffee'

describe 'startswith', ->
    startswith = misc.startswith
    it 'checks that "foobar" starts with foo', ->
        expect(startswith("foobar",'foo')).toBe(true)
    it 'checks that "foobar" does not start with bar', ->
        expect(startswith("foobar",'bar')).toBe(false)

describe 'merge', ->
    merge = misc.merge
    it 'checks that {a:5} merged with {b:7} is {a:5,b:7}', ->
        expect(merge({a:5},{b:7})).toEqual({a:5,b:7})
    it 'checks that x={a:5} merged with {b:7} mutates x to be {a:5,b:7}', ->
        x = {a:5}; merge(x,{b:7})
        expect(x).toEqual({a:5,b:7})

describe 'cmp', ->
    cmp = misc.cmp
    it 'compares 4 and 10 and returns -1', ->
        expect(cmp(4, 10)).toBe(-1)
    it 'compares 10 and 4 and returns 1', ->
        expect(cmp(10, 4)).toBe(1)
    it 'compares 10 and 10 and returns 0', ->
        expect(cmp(10, 10)).toBe(0)