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Versions: 15
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Contents
require 'spec_helper'
describe Volt::Computation do
it 'should trigger again when a dependent changes' do
a = Volt::ReactiveHash.new
values = []
-> { values << a[0] }.watch!
expect(values).to eq([nil])
a[0] = 'one'
Volt::Computation.flush!
expect(values).to eq([nil, 'one'])
a[0] = 'two'
Volt::Computation.flush!
expect(values).to eq([nil, 'one', 'two'])
end
it 'should not trigger after the computation is stopped' do
a = Volt::ReactiveHash.new
values = []
computation = -> { values << a[0] }.watch!
expect(values).to eq([nil])
a[0] = 'one'
Volt::Computation.flush!
expect(values).to eq([nil, 'one'])
computation.stop
a[0] = 'two'
Volt::Computation.flush!
expect(values).to eq([nil, 'one'])
end
it 'should support nested watches' do
a = Volt::ReactiveHash.new
values = []
-> do
values << a[0]
-> do
values << a[1]
end.watch!
end.watch!
expect(values).to eq([nil, nil])
a[1] = 'inner'
Volt::Computation.flush!
expect(values).to eq([nil, nil, 'inner'])
a[0] = 'outer'
Volt::Computation.flush!
expect(values).to eq([nil, nil, 'inner', 'outer', 'inner'])
end
end
Version data entries
15 entries across 15 versions & 1 rubygems