1 files changed, 40 insertions, 0 deletions
diff --git a/cell_test.go b/cell_test.go
new file mode 100644
index 0000000..2ab5413
--- /dev/null
+++ b/cell_test.go
@@ -0,0 +1,40 @@
+package excelize
+
+import "testing"
+
+func TestCheckCellInArea(t *testing.T) {
+	expectedTrueCellInAreaList := [][2]string{
+		[2]string{"c2", "A1:AAZ32"},
+		[2]string{"AA0", "Z0:AB1"},
+		[2]string{"B9", "A1:B9"},
+		[2]string{"C2", "C2:C2"},
+	}
+
+	for _, expectedTrueCellInArea := range expectedTrueCellInAreaList {
+		cell := expectedTrueCellInArea[0]
+		area := expectedTrueCellInArea[1]
+
+		cellInArea := checkCellInArea(cell, area)
+
+		if !cellInArea {
+			t.Fatalf("Expected cell %v to be in area %v, got false\n", cell, area)
+		}
+	}
+
+	expectedFalseCellInAreaList := [][2]string{
+		[2]string{"c2", "A4:AAZ32"},
+		[2]string{"C4", "D6:A1"}, // weird case, but you never know
+		[2]string{"AEF42", "BZ40:AEF41"},
+	}
+
+	for _, expectedFalseCellInArea := range expectedFalseCellInAreaList {
+		cell := expectedFalseCellInArea[0]
+		area := expectedFalseCellInArea[1]
+
+		cellInArea := checkCellInArea(cell, area)
+
+		if cellInArea {
+			t.Fatalf("Expected cell %v not to be inside of area %v, but got true\n", cell, area)
+		}
+	}
+}