* lib/yaml/store.rb (YAML::load): modified to support empty

  database.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 74 insertions, 0 deletions

diff --git a/test/yaml/test_yamlstore.rb b/test/yaml/test_yamlstore.rb
new file mode 100644
index 0000000000..7a3d90469e
--- /dev/null
+++ b/test/yaml/test_yamlstore.rb
@@ -0,0 +1,74 @@
+require 'test/unit'
+require 'yaml/store'
+
+class YAMLStoreTest < Test::Unit::TestCase
+  def setup
+    @yamlstore_file = "yamlstore.tmp.#{Process.pid}"
+    @yamlstore = YAML::Store.new(@yamlstore_file)
+  end
+
+  def teardown
+    File.unlink(@yamlstore_file) rescue nil
+  end
+
+  def test_opening_new_file_in_readonly_mode_should_result_in_empty_values
+    @yamlstore.transaction(true) do
+      assert_nil @yamlstore[:foo]
+      assert_nil @yamlstore[:bar]
+    end
+  end
+  
+  def test_opening_new_file_in_readwrite_mode_should_result_in_empty_values
+    @yamlstore.transaction do
+      assert_nil @yamlstore[:foo]
+      assert_nil @yamlstore[:bar]
+    end
+  end
+  
+  def test_data_should_be_loaded_correctly_when_in_readonly_mode
+    @yamlstore.transaction do
+      @yamlstore[:foo] = "bar"
+    end
+    @yamlstore.transaction(true) do
+      assert_equal "bar", @yamlstore[:foo]
+    end
+  end
+  
+  def test_data_should_be_loaded_correctly_when_in_readwrite_mode
+    @yamlstore.transaction do
+      @yamlstore[:foo] = "bar"
+    end
+    @yamlstore.transaction do
+      assert_equal "bar", @yamlstore[:foo]
+    end
+  end
+  
+  def test_changes_after_commit_are_discarded
+    @yamlstore.transaction do
+      @yamlstore[:foo] = "bar"
+      @yamlstore.commit
+      @yamlstore[:foo] = "baz"
+    end
+    @yamlstore.transaction(true) do
+      assert_equal "bar", @yamlstore[:foo]
+    end
+  end
+  
+  def test_changes_are_not_written_on_abort
+    @yamlstore.transaction do
+      @yamlstore[:foo] = "bar"
+      @yamlstore.abort
+    end
+    @yamlstore.transaction(true) do
+      assert_nil @yamlstore[:foo]
+    end
+  end
+  
+  def test_writing_inside_readonly_transaction_raises_error
+    assert_raise(PStore::Error) do
+      @yamlstore.transaction(true) do
+        @yamlstore[:foo] = "bar"
+      end
+    end
+  end
+end