最大容量を決めて値を保存できる SizeLimitedStorage

1 files changed, 47 insertions, 0 deletions

diff --git a/test/core/test_weakstorage.rb b/test/core/test_weakstorage.rb
new file mode 100644
index 00000000..98b3f739
--- /dev/null
+++ b/test/core/test_weakstorage.rb
@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+require 'test/unit'
+require 'rubygems'
+require 'mocha'
+require File.expand_path(File.dirname(__FILE__) + '/../helper')
+
+Dir.chdir(File.expand_path(File.dirname(__FILE__) + '/../core'))
+$LOAD_PATH.push '.'
+require 'utils'
+
+miquire :lib, 'test_unit_extensions', 'weakstorage'
+
+class TC_WeakStorage < Test::Unit::TestCase
+  def setup
+  end
+
+  must "size limited storage item insertion" do
+    sls = SizeLimitedStorage.new(Symbol, String, 8)
+    assert_equal(0, sls.using)
+    sls[:a] = "foo"
+    assert_equal("foo", sls[:a])
+    assert_equal(3, sls.using)
+
+    sls[:b] = "bar"
+    assert_equal("foo", sls[:a])
+    assert_equal("bar", sls[:b])
+    assert_equal(6, sls.using)
+
+    sls[:c] = "baz"
+    assert_nil(sls[:a])
+    assert_equal("bar", sls[:b])
+    assert_equal("baz", sls[:c])
+    assert_equal(6, sls.using)
+
+    sls[:d] = "pi"
+    assert_equal("bar", sls[:b])
+    assert_equal("baz", sls[:c])
+    assert_equal("pi", sls[:d])
+    assert_equal(8, sls.using)
+
+    assert(!sls.has_key?(:a))
+    assert(sls.has_key?(:b))
+    assert(sls.has_key?(:c))
+    assert(sls.has_key?(:d))
+    assert(!sls.has_key?(:e))
+  end
+end