bug(Champs::DecimalNumberChamp.for_export): should be able to cast a number wrapped with a string having leading/trailing spaces

spec/models/champs/decimal_number_champ_spec.rb

@@ -51,4 +51,21 @@ describe Champs::DecimalNumberChamp do
       it { is_expected.to be_truthy }
     end
   end
+
+  describe 'for_export' do
+    let(:champ) { create(:champ_decimal_number, value:) }
+    subject { champ.for_export }
+    context 'with nil' do
+      let(:value) { 0 }
+      it { is_expected.to be_nil }
+    end
+    context 'with simple number' do
+      let(:value) { "120" }
+      it { is_expected.to eq(120) }
+    end
+    context 'with nuber with space' do
+      let(:value) { " 120 " }
+      it { is_expected.to eq(120) }
+    end
+  end
 end