78 lines
1.4 KiB
Ruby
78 lines
1.4 KiB
Ruby
$: << File.expand_path(File.dirname(__FILE__) + '/../lib')
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$: << File.expand_path(File.dirname(__FILE__))
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require 'minitest/autorun'
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require 'minitest/spec'
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require 'vm/nodes'
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require 'fake_builder'
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include Vm
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describe 'Nodes' do
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before do
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@context = Hash.new
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@builder = FakeBuilder.new
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end
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it 'emits a number' do
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input = Vm::Number.new 42
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expected = <<HERE
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ldc 42
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HERE
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input.eval @context, @builder
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@builder.result.must_equal expected
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end
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it 'emits a function call' do
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@context[:params] = ['foo']
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input = Vm::Funcall.new 'baz', [Vm::Number.new(42),
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Vm::Name.new('foo')]
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expected = <<HERE
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ldc 42
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iload 0
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invokestatic example, baz, int, int, int
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HERE
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input.eval @context, @builder
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@builder.result.must_equal expected
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end
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it 'emits a conditional' do
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input = Vm::Conditional.new \
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Vm::Number.new(0),
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Vm::Number.new(42),
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Vm::Number.new(667)
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expected = <<HERE
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ldc 0
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ifeq else
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ldc 42
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goto endif
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label else
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ldc 667
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label endif
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HERE
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input.eval @context, @builder
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@builder.result.must_equal expected
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end
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it 'emits a function definition' do
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input = Vm::Function.new \
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'foo',
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Vm::Name.new('x'),
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Vm::Number.new(5)
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expected = <<HERE
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public_static_method foo, int, int
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ldc 5
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ireturn
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HERE
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input.eval @context, @builder
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@builder.result.must_equal expected
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end
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end
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