67 lines
1.6 KiB
Python
67 lines
1.6 KiB
Python
"""
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Tests coverign the VM interpreter
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"""
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from .fixtures import * # noqa
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from ichor import isa, InterpreterError, TRUE, FALSE
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import pytest
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def test_return(vm):
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assert vm.run([isa.RETURN(0)], stack=[TRUE, FALSE]) == []
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assert vm.run([isa.RETURN(1)], stack=[TRUE, FALSE]) == [TRUE]
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assert vm.run([isa.RETURN(2)], stack=[TRUE, FALSE]) == [TRUE, FALSE]
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def test_dup(vm):
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assert vm.run([isa.DUP(1), isa.RETURN(3)], stack=[FALSE, TRUE]) == [FALSE, TRUE, TRUE]
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assert vm.run([isa.DUP(2), isa.RETURN(4)], stack=[FALSE, TRUE]) == [FALSE, TRUE, FALSE, TRUE]
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def test_rot(vm):
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assert vm.run([
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isa.ROT(2),
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isa.RETURN(2)
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], stack=[FALSE, TRUE]) == [TRUE, FALSE]
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assert vm.run([
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isa.ROT(2),
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isa.RETURN(5)
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], stack=[TRUE, TRUE, TRUE, FALSE, TRUE]) == [TRUE, TRUE, TRUE, TRUE, FALSE]
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assert vm.run([
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isa.ROT(3),
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isa.RETURN(3)
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], stack=[FALSE, TRUE, FALSE]) == [FALSE, FALSE, TRUE]
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def test_drop(vm):
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assert vm.run([
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isa.DROP(1),
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isa.RETURN(1)
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], stack=[TRUE, FALSE]) == [TRUE]
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def test_dup_too_many(vm):
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with pytest.raises(InterpreterError):
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vm.run([isa.DUP(1)])
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with pytest.raises(InterpreterError):
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vm.run([isa.DUP(2)], stack=[FALSE])
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def test_rot_too_many(vm):
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with pytest.raises(InterpreterError):
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vm.run([isa.ROT(1)])
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with pytest.raises(InterpreterError):
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vm.run([isa.ROT(2)], stack=[FALSE])
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def test_drop_too_many(vm):
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with pytest.raises(InterpreterError):
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vm.run([isa.DROP(1)])
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with pytest.raises(InterpreterError):
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vm.run([isa.DROP(2)], stack=[FALSE])
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