test(scope_spec) check to make sure the scope is begin passed as an argument to the watcher
fix(scope_spec) correct the function being called
test(scope_spec) test for a call to the listener function when the watched value changes
test(scope_spec)calls the listener function when the watched value changes
feat(scope.js) digest calls the listener function when the watched value changes
feat(scope.js) digest calls listener when watch value is first undefined
test(scope.spec) digest should call listener with new value as old value first
feat(scope.js) digest calls listener with new value as old value first
test(scope_spec) scope may have watchers that omit the listener function