1 files changed, 51 insertions, 0 deletions
diff --git a/test/excelx/test_coordinate.rb b/test/excelx/test_coordinate.rb
new file mode 100644
index 0000000..5cddcc4
--- /dev/null
+++ b/test/excelx/test_coordinate.rb
@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class TestRooExcelxCoordinate < Minitest::Test
+  def row
+    10
+  end
+
+  def column
+    20
+  end
+
+  def coordinate
+    Roo::Excelx::Coordinate.new(row, column)
+  end
+
+  def array
+    [row, column]
+  end
+
+  def test_row
+    assert_same  row, coordinate.row
+  end
+
+  def test_column
+    assert_same  column, coordinate.column
+  end
+
+  def test_frozen?
+    assert coordinate.frozen?
+  end
+
+  def test_equality
+    hash = {}
+    hash[coordinate] = true
+    assert hash.key?(coordinate)
+    assert hash.key?(array)
+  end
+
+  def test_expand
+    r, c = coordinate
+    assert_same row, r
+    assert_same column, c
+  end
+
+  def test_aref
+    assert_same row, coordinate[0]
+    assert_same column, coordinate[1]
+  end
+end