Resolve "Module avec une section: le mode champs vide ne fonctionne pas"

Closes #569 (closed)

e2e/bief-empty-fields.e2e-spec.ts

+import { ListPage } from "./list.po";
+import { Navbar } from "./navbar.po";
+import { browser } from "protractor";
+import { CalculatorPage } from "./calculator.po";
+import { PreferencesPage } from "./preferences.po";
+
+describe("Check fields are empty in 'up/downstream elevations of a reach' calculator when created with 'empty fields' option", () => {
+    let listPage: ListPage;
+    let navBar: Navbar;
+    let calcPage: CalculatorPage;
+    let prefPage: PreferencesPage;
+
+    beforeAll(async () => {
+        listPage = new ListPage();
+        navBar = new Navbar();
+        calcPage = new CalculatorPage();
+        prefPage = new PreferencesPage();
+    });
+
+    beforeEach(async () => {
+        // enable evil option "empty fields on module creation"
+        await prefPage.navigateTo();
+        await prefPage.enableEvilEmptyFields();
+        await browser.sleep(200);
+    });
+
+    it("", async () => {
+        // open "up/downstream elevations of a reach" calculator
+        await navBar.clickNewCalculatorButton();
+        await listPage.clickMenuEntryForCalcType(21);
+        await browser.sleep(200);
+
+        expect(calcPage.checkEmptyOrFilledFields(["LargeurBerge", "Ks", "Long", "YB", "ZF1", "ZF2", "Q", "Z1", "Z2", "Dx"],
+            [true, true, true, true, true, true, true, true, true, true]))
+    });
+});