Add useless spec

spec/section_param/section_nubs.spec.ts

+import {
+    CalculatorType,
+    CourbeRemous,
+    cSnCirc,
+    cSnPuiss,
+    cSnTrapez,
+    ParamsSectionCirc,
+    ParamsSectionPuiss,
+    ParamsSectionTrapez,
+    Props,
+    SectionParametree,
+    Session
+} from "../../src/index";
+import { RegimeUniforme } from "../../src/regime_uniforme";
+
+describe("section nubs and nodeTye property", () => {
+
+    beforeEach(() => {
+        Session.getInstance().clear();
+    });
+
+    it("Section paramétrée", () => {
+        const sp = Session.getInstance().createSessionNub(
+            new Props({ calcType: CalculatorType.SectionParametree })
+        ) as SectionParametree;
+        sp.setSection(new cSnTrapez(
+            new ParamsSectionTrapez(2.6, 0.55, 1.1, 42, 1.3, 0.002, 0.9)
+        ));
+        const data = Session.getInstance().serialise();
+        // console.log(data);
+        // stringified Nub should contain only 1 occurrence of "nodeType"
+        const ntOcc = (data.match(/"nodeType"/g) || []).length;
+        expect(ntOcc).toBe(1);
+    });
+
+    it("Courbe de remous", () => {
+        const sp = Session.getInstance().createSessionNub(
+            new Props({ calcType: CalculatorType.CourbeRemous })
+        ) as CourbeRemous;
+        sp.setSection(new cSnCirc(
+            new ParamsSectionCirc(2.6, 0.55, 42, 1.3, 0.002, 1.1)
+        ));
+        const data = Session.getInstance().serialise();
+        // console.log(data);
+        // stringified Nub should contain only 1 occurrence of "nodeType"
+        const ntOcc = (data.match(/"nodeType"/g) || []).length;
+        expect(ntOcc).toBe(1);
+    });
+
+    it("Régime uniforme", () => {
+        const sp = Session.getInstance().createSessionNub(
+            new Props({ calcType: CalculatorType.RegimeUniforme })
+        ) as RegimeUniforme;
+        sp.setSection(new cSnPuiss(
+            new ParamsSectionPuiss(0.35, 2.6, 0.55, 1.1, 42, 1.3, 0.002)
+        ));
+        const data = Session.getInstance().serialise();
+        // console.log(data);
+        // stringified Nub should contain only 1 occurrence of "nodeType"
+        const ntOcc = (data.match(/"nodeType"/g) || []).length;
+        expect(ntOcc).toBe(1);
+    });
+
+});