82 lines
2.1 KiB
Ruby
82 lines
2.1 KiB
Ruby
require 'test/unit'
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require File.dirname(__FILE__)+'/../lib/active_support/caching_tools'
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class HashCachingTests < Test::Unit::TestCase
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def cached(&proc)
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return @cached if @cached
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@cached_class = Class.new(&proc)
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@cached_class.class_eval do
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extend ActiveSupport::CachingTools::HashCaching
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hash_cache :slow_method
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end
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@cached = @cached_class.new
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end
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def test_cache_access_should_call_method
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cached do
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def slow_method(a) raise "I should be here: #{a}"; end
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end
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assert_raises(RuntimeError) { cached.slow_method_cache[1] }
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end
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def test_cache_access_should_actually_cache
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cached do
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def slow_method(a)
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(@x ||= [])
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if @x.include?(a) then raise "Called twice for #{a}!"
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else
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@x << a
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a + 1
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end
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end
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end
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assert_equal 11, cached.slow_method_cache[10]
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assert_equal 12, cached.slow_method_cache[11]
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assert_equal 11, cached.slow_method_cache[10]
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assert_equal 12, cached.slow_method_cache[11]
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end
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def test_cache_should_be_clearable
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cached do
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def slow_method(a)
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@x ||= 0
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@x += 1
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end
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end
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assert_equal 1, cached.slow_method_cache[:a]
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assert_equal 2, cached.slow_method_cache[:b]
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assert_equal 3, cached.slow_method_cache[:c]
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assert_equal 1, cached.slow_method_cache[:a]
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assert_equal 2, cached.slow_method_cache[:b]
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assert_equal 3, cached.slow_method_cache[:c]
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cached.slow_method_cache.clear
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assert_equal 4, cached.slow_method_cache[:a]
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assert_equal 5, cached.slow_method_cache[:b]
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assert_equal 6, cached.slow_method_cache[:c]
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end
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def test_deep_caches_should_work_too
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cached do
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def slow_method(a, b, c)
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a + b + c
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end
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end
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assert_equal 3, cached.slow_method_cache[1][1][1]
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assert_equal 7, cached.slow_method_cache[1][2][4]
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assert_equal 7, cached.slow_method_cache[1][2][4]
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assert_equal 7, cached.slow_method_cache[4][2][1]
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assert_equal({
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1 => {1 => {1 => 3}, 2 => {4 => 7}},
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4 => {2 => {1 => 7}}},
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cached.slow_method_cache
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)
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end
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end
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