1 files changed, 83 insertions, 0 deletions
diff --git a/activerecord/test/cases/fixtures/file_test.rb b/activerecord/test/cases/fixtures/file_test.rb
new file mode 100644
index 0000000000..8dbf92ae9a
--- /dev/null
+++ b/activerecord/test/cases/fixtures/file_test.rb
@@ -0,0 +1,83 @@
+require "cases/helper"
+require 'tempfile'
+
+module ActiveRecord
+  class Fixtures
+    class FileTest < ActiveRecord::TestCase
+      def test_open
+        fh = File.open(::File.join(FIXTURES_ROOT, "accounts.yml"))
+        assert_equal 6, fh.to_a.length
+      end
+
+      def test_open_with_block
+        called = false
+        File.open(::File.join(FIXTURES_ROOT, "accounts.yml")) do |fh|
+          called = true
+          assert_equal 6, fh.to_a.length
+        end
+        assert called, 'block called'
+      end
+
+      def test_names
+        File.open(::File.join(FIXTURES_ROOT, "accounts.yml")) do |fh|
+          assert_equal ["signals37",
+                        "unknown",
+                        "rails_core_account",
+                        "last_account",
+                        "rails_core_account_2",
+                        "odegy_account"].sort, fh.to_a.map(&:first).sort
+        end
+      end
+
+      def test_values
+        File.open(::File.join(FIXTURES_ROOT, "accounts.yml")) do |fh|
+          assert_equal [1,2,3,4,5,6].sort, fh.to_a.map(&:last).map { |x|
+            x['id']
+          }.sort
+        end
+      end
+
+      def test_erb_processing
+        File.open(::File.join(FIXTURES_ROOT, "developers.yml")) do |fh|
+          devs = Array.new(8) { |i| "dev_#{i + 3}" }
+          assert_equal [], devs - fh.to_a.map(&:first)
+        end
+      end
+
+      def test_empty_file
+        tmp_yaml ['empty', 'yml'], '' do |t|
+          assert_equal [], File.open(t.path) { |fh| fh.to_a }
+        end
+      end
+
+      # A valid YAML file is not necessarily a value Fixture file. Make sure
+      # an exception is raised if the format is not valid Fixture format.
+      def test_wrong_fixture_format_string
+        tmp_yaml ['empty', 'yml'], 'qwerty' do |t|
+          assert_raises(ActiveRecord::Fixture::FormatError) do
+            File.open(t.path) { |fh| fh.to_a }
+          end
+        end
+      end
+
+      def test_wrong_fixture_format_nested
+        tmp_yaml ['empty', 'yml'], 'one: two' do |t|
+          assert_raises(ActiveRecord::Fixture::FormatError) do
+            File.open(t.path) { |fh| fh.to_a }
+          end
+        end
+      end
+
+      private
+      def tmp_yaml(name, contents)
+        t = Tempfile.new name
+        t.binmode
+        t.write contents
+        t.close
+        yield t
+      ensure
+        t.close true
+      end
+    end
+  end
+end