Fixed: transactions not saved when double-entry enabled but no transfer account specified

Fixes #277

Author: codinguser

app/src/main/java/org/gnucash/android/ui/transaction/TransactionFormFragment.java

@@ -742,8 +742,14 @@ public boolean onOptionsItemSelected(MenuItem item) {
             }
             else if (mAmountEditText.getText().length() == 0) {
                 Toast.makeText(getActivity(), R.string.toast_transanction_amount_required, Toast.LENGTH_SHORT).show();
-            } else
-			    saveNewTransaction();
+            } else if (mUseDoubleEntry && mDoubleAccountSpinner.getCount() == 0){
+                //TODO: Or automatically create an imbalance account
+                Toast.makeText(getActivity(),
+                        "Create & specify a transfer account OR disable double-entry in settings to save the transaction",
+                        Toast.LENGTH_LONG).show();
+            } else {
+                saveNewTransaction();
+            }
 			return true;
 
 		default:

integration-tests/src/main/java/org/gnucash/android/test/ui/TransactionsActivityTest.java

@@ -188,7 +188,9 @@ private void validateEditTransactionFields(Transaction transaction){
 		actualValue = timeView.getText().toString();// mSolo.getText(7).getText().toString();
 		assertEquals(expectedValue, actualValue);
 	}
-	
+
+    //TODO: Add test for only one account but with double-entry enabled
+
 	public void testAddTransaction(){
         setDoubleEntryEnabled(true);
         mSolo.waitForText(TRANSACTION_NAME);