1 files changed, 76 insertions, 0 deletions
diff --git a/activerecord/test/cases/result_test.rb b/activerecord/test/cases/result_test.rb
new file mode 100644
index 0000000000..d6decafad9
--- /dev/null
+++ b/activerecord/test/cases/result_test.rb
@@ -0,0 +1,76 @@
+require "cases/helper"
+
+module ActiveRecord
+  class ResultTest < ActiveRecord::TestCase
+    def result
+      Result.new(['col_1', 'col_2'], [
+        ['row 1 col 1', 'row 1 col 2'],
+        ['row 2 col 1', 'row 2 col 2'],
+        ['row 3 col 1', 'row 3 col 2'],
+      ])
+    end
+
+    test "to_hash returns row_hashes" do
+      assert_equal [
+        {'col_1' => 'row 1 col 1', 'col_2' => 'row 1 col 2'},
+        {'col_1' => 'row 2 col 1', 'col_2' => 'row 2 col 2'},
+        {'col_1' => 'row 3 col 1', 'col_2' => 'row 3 col 2'},
+      ], result.to_hash
+    end
+
+    test "each with block returns row hashes" do
+      result.each do |row|
+        assert_equal ['col_1', 'col_2'], row.keys
+      end
+    end
+
+    test "each without block returns an enumerator" do
+      result.each.with_index do |row, index|
+        assert_equal ['col_1', 'col_2'], row.keys
+        assert_kind_of Integer, index
+      end
+    end
+
+    if Enumerator.method_defined? :size
+      test "each without block returns a sized enumerator" do
+        assert_equal 3, result.each.size
+      end
+    end
+
+    test "cast_values returns rows after type casting" do
+      values = [["1.1", "2.2"], ["3.3", "4.4"]]
+      columns = ["col1", "col2"]
+      types = { "col1" => Type::Integer.new, "col2" => Type::Float.new }
+      result = Result.new(columns, values, types)
+
+      assert_equal [[1, 2.2], [3, 4.4]], result.cast_values
+    end
+
+    test "cast_values uses identity type for unknown types" do
+      values = [["1.1", "2.2"], ["3.3", "4.4"]]
+      columns = ["col1", "col2"]
+      types = { "col1" => Type::Integer.new }
+      result = Result.new(columns, values, types)
+
+      assert_equal [[1, "2.2"], [3, "4.4"]], result.cast_values
+    end
+
+    test "cast_values returns single dimensional array if single column" do
+      values = [["1.1"], ["3.3"]]
+      columns = ["col1"]
+      types = { "col1" => Type::Integer.new }
+      result = Result.new(columns, values, types)
+
+      assert_equal [1, 3], result.cast_values
+    end
+
+    test "cast_values can receive types to use instead" do
+      values = [["1.1", "2.2"], ["3.3", "4.4"]]
+      columns = ["col1", "col2"]
+      types = { "col1" => Type::Integer.new, "col2" => Type::Float.new }
+      result = Result.new(columns, values, types)
+
+      assert_equal [[1.1, 2.2], [3.3, 4.4]], result.cast_values("col1" => Type::Float.new)
+    end
+  end
+end