git ssb

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const tape = require('tape')
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const ReferanceMap = require('../index.js')
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tape('referance mapping', t => {
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  t.plan(11)
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  const referanceMap = new ReferanceMap()
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  const obj1 = {}
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  const obj2 = {}
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  const ref1 = referanceMap.add(obj1)
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  const ref2 = referanceMap.add(obj2)
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  t.equals(ref1, 0, 'should produce correct refs')
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  t.equals(ref2, 1, 'should produce correct refs')
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  t.equals(referanceMap.has(ref1), true, 'should detect if it has the ref')
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  const foundObj1 = referanceMap.get(ref1)
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  const foundObj2 = referanceMap.get(ref2)
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  t.equals(foundObj1, obj1, 'should get the correct object')
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  t.equals(foundObj2, obj2, 'should get the correct object')
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  t.equals(referanceMap.size, 2, 'should return the correct size')
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  referanceMap.delete(ref1)
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  try {
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    referanceMap.get(ref1)
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  } catch (e) {
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    t.true(true, 'should delete refances')
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  }
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  t.equals(referanceMap.has(ref1), false, 'should detect if it does not has the ref')
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  referanceMap.clear()
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  try {
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    referanceMap.get(ref2)
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  } catch (e) {
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    t.true(true, 'should clear refances')
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  }
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  const aMap = new Map()
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  const ref3 = referanceMap.add(aMap)
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  t.equals(referanceMap.get(ref3, Map), aMap)
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  try {
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    referanceMap.get(ref3, Set)
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  } catch (e) {
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    t.true(true, 'should throw if wrong type')
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  }
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})
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