diff --git a/calculator_test.go b/calculator_test.go
deleted file mode 100644
index 018d6e5..0000000
--- a/calculator_test.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package calculator
-
-import "testing"
-
-func TestAdd(t *testing.T) {
-	tables := []struct {
-		x int
-		y int
-		n int
-		e string
-	}{
-		{1, 2, 3, ""},
-		{1.0, 2.0, 3.0, ""},
-		{0, 2.0, 2.0, ""},
-		{2.0, 0, 2.0, ""},
-		{-4, 2.0, -2.0, ""},
-	}
-
-	for _, table := range tables {
-		if total, err := Add(table.x, table.y); err != nil && err.Error() != table.e {
-			t.Errorf("Add of (%d+%d) produced wrong error, got %v, want %v.", table.x, table.y, err.Error(), table.e)
-		} else if total != table.n {
-			t.Errorf("Add of (%d+%d) produced wrong result, got %d, want %d.", table.x, table.y, total, table.n)
-		}
-	}
-}
-
-func TestSubtract(t *testing.T) {
-	tables := []struct {
-		x int
-		y int
-		n int
-		e string
-	}{
-		{1, 2, -1.0, ""},
-		{2, 1, 1.0, ""},
-		{1.0, 2.0, -1.0, ""},
-		{0, 2.0, -2.0, ""},
-		{2.0, 0, 2.0, ""},
-		{-4, 2.0, -6.0, ""},
-	}
-
-	for _, table := range tables {
-		if total, err := Subtract(table.x, table.y); err != nil && err.Error() != table.e {
-			t.Errorf("Subtract of (%d-%d) produced wrong error, got %v, want %v.", table.x, table.y, err.Error(), table.e)
-		} else if total != table.n {
-			t.Errorf("Subtract of (%d-%d) produced wrong result, got %d, want %d.", table.x, table.y, total, table.n)
-		}
-	}
-}
-
-func TestMultiply(t *testing.T) {
-	tables := []struct {
-		x int
-		y int
-		n int
-		e string
-	}{
-		{1, 2, 2.0, ""},
-		{1.0, 2.0, 2.0, ""},
-		{0, 2.0, 0, ""},
-		{2.0, 0, 0, ""},
-		{-4, 2.0, -8.0, ""},
-	}
-
-	for _, table := range tables {
-		if total, err := Multiply(table.x, table.y); err != nil && err.Error() != table.e {
-			t.Errorf("Multiply of (%d*%d) produced wrong error, got %v, want %v.", table.x, table.y, err.Error(), table.e)
-		} else if total != table.n {
-			t.Errorf("Multiply of (%d*%d) produced wrong result, got %d, want %d.", table.x, table.y, total, table.n)
-		}
-	}
-}
-
-func TestDivide(t *testing.T) {
-	tables := []struct {
-		x int
-		y int
-		n float64
-		e string
-	}{
-		{1, 2, 0.5, ""},
-		{1.0, 2.0, 0.5, ""},
-		{0, 2.0, 0, ""},
-		{-4, 2.0, -2.0, ""},
-		// {2.0, 0, 0, "Cannot divide by 0"},
-	}
-
-	for _, table := range tables {
-		if total, err := Divide(table.x, table.y); err != nil && err.Error() != table.e {
-			t.Errorf("Divide of (%d/%d) produced wrong error, got %v, want %v.", table.x, table.y, err.Error(), table.e)
-		} else if total != table.n {
-			t.Errorf("Divide of (%d/%d) produced wrong result, got %f, want %f.", table.x, table.y, total, table.n)
-		}
-	}
-}