First steps to a real testing framework: first working version with mocha, chai and doctest-ts

testLegacy/Changes.spec.ts

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+import T from "./TestHelper";
+import {Changes} from "../Logic/Osm/Changes";
+import {ChangeDescription, ChangeDescriptionTools} from "../Logic/Osm/Actions/ChangeDescription";
+
+export default class ChangesSpec extends T {
+
+    constructor() {
+        super([
+            ["Generate preXML from changeDescriptions", () => {
+                const changeDescrs: ChangeDescription[] = [
+                    {
+                        type: "node",
+                        id: -1,
+                        changes: {
+                            lat: 42,
+                            lon: -8
+                        },
+                        tags: [{k: "someKey", v: "someValue"}],
+                        meta: {
+                            changeType: "create",
+                            theme: "test"
+                        }
+                    },
+                    {
+                        type: "node",
+                        id: -1,
+                        tags: [{k: 'foo', v: 'bar'}],
+                        meta: {
+                            changeType: "answer",
+                            theme: "test"
+                        }
+                    }
+                ]
+                const c = new Changes()
+               const descr = c.CreateChangesetObjects(
+                    changeDescrs,
+                    []
+                )
+                T.equals(0, descr.modifiedObjects.length)
+                T.equals(0, descr.deletedObjects.length)
+                T.equals(1, descr.newObjects.length)
+                const ch = descr.newObjects[0]
+                T.equals("bar", ch.tags["foo"])
+                T.equals("someValue", ch.tags["someKey"])
+            }]
+        ]);
+        
+    }
+
+
+}