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73 lines
2 KiB
Ruby
73 lines
2 KiB
Ruby
# frozen_string_literal: true
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require "abstract_unit"
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module ActionDispatch
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module Journey
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module NFA
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class TestTransitionTable < ActiveSupport::TestCase
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def setup
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@parser = Journey::Parser.new
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end
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def test_eclosure
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table = tt "/"
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assert_equal [0], table.eclosure(0)
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table = tt ":a|:b"
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assert_equal 3, table.eclosure(0).length
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table = tt "(:a|:b)"
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assert_equal 5, table.eclosure(0).length
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assert_equal 5, table.eclosure([0]).length
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end
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def test_following_states_one
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table = tt "/"
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assert_equal [1], table.following_states(0, "/")
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assert_equal [1], table.following_states([0], "/")
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end
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def test_following_states_group
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table = tt "a|b"
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states = table.eclosure 0
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assert_equal 1, table.following_states(states, "a").length
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assert_equal 1, table.following_states(states, "b").length
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end
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def test_following_states_multi
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table = tt "a|a"
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states = table.eclosure 0
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assert_equal 2, table.following_states(states, "a").length
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assert_equal 0, table.following_states(states, "b").length
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end
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def test_following_states_regexp
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table = tt "a|:a"
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states = table.eclosure 0
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assert_equal 1, table.following_states(states, "a").length
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assert_equal 1, table.following_states(states, /[^\.\/\?]+/).length
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assert_equal 0, table.following_states(states, "b").length
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end
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def test_alphabet
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table = tt "a|:a"
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assert_equal [/[^\.\/\?]+/, "a"], table.alphabet
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table = tt "a|a"
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assert_equal ["a"], table.alphabet
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end
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private
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def tt(string)
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ast = @parser.parse string
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builder = Builder.new ast
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builder.transition_table
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end
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end
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end
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end
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end
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