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48 lines
1.1 KiB
48 lines
1.1 KiB
require_relative "../test_helper"
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require "lox/environment"
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require "lox/error"
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require "lox/token"
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class TestEnvironment < Lox::Test
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NAME_TOKEN = Lox::Token.new(:IDENTIFIER, "name", "name", 0)
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def setup
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@env = Lox::Environment.new
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end
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def test_define
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@env.define("name", "value")
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assert_equal "value", @env.get(NAME_TOKEN)
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end
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def test_get
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assert_raises Lox::RuntimeError, "Undefined variable name 'name'." do
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@env.get(NAME_TOKEN)
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end
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end
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def test_enclosing_define
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@env.define("name", "value")
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enclosed = Lox::Environment.new(@env)
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assert_equal "value", enclosed.get(NAME_TOKEN)
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enclosed.define("name", "foo")
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assert_equal "foo", enclosed.get(NAME_TOKEN)
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end
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def test_enclosing_assign
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@env.define("name", "foo")
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enclosed = Lox::Environment.new(@env)
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enclosed.assign(NAME_TOKEN, "bar")
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assert_equal "bar", enclosed.get(NAME_TOKEN)
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assert_equal "bar", @env.get(NAME_TOKEN)
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enclosed.define("name", "baz")
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enclosed.assign(NAME_TOKEN, "qux")
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assert_equal "qux", enclosed.get(NAME_TOKEN)
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assert_equal "bar", @env.get(NAME_TOKEN)
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end
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end
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