Began rewrite of all parenting functions to nested sets

What have I gotten myself into :(
2023-09-13 23:18:03 +02:00
parent 00395a3e79
commit d57e49f969
18 changed files with 2427 additions and 743 deletions
--- a/app/imports/api/parenting/parentingFunctions.test.ts
+++ b/app/imports/api/parenting/parentingFunctions.test.ts
@@ -0,0 +1,77 @@
+import { docsToForest, calculateNestedSetOperations } from '/imports/api/parenting/parentingFunctions'
+import { TreeDoc } from '/imports/api/parenting/ChildSchema';
+import { assert } from 'chai';
+
+function doc(_id, left, right, parentId?): TreeDoc {
+  return { _id, root: { id: 'root', collection: 'col' }, left, right, parentId };
+}
+
+function op(_id, left, right) {
+  return {
+    updateOne: {
+      filter: { _id },
+      update: { $set: { left, right } },
+    },
+  };
+}
+
+describe('Parenting with nested sets', function () {
+  /**
+   * Test the following structure
+   * 
+   *           1 Books 12
+   *               ┃
+   *        2 Programming 11
+   *      ┏━━━━━━━━┻━━━━━━━━━┓
+   * 3 Languages 4     5 Databases 10
+   *                 ┏━━━━━━━┻━━━━━━━┓  
+   *            6 MongoDB 7       8 dbm 9
+   */
+  it('Takes a set of documents and builds the forest', function () {
+    const docArray: Array<TreeDoc> = [
+      doc('Books', 1, 12),
+      doc('Programming', 2, 11),
+      doc('Languages', 3, 4),
+      doc('Databases', 5, 10),
+      doc('MongoDB', 6, 7),
+      doc('dbm', 8, 9),
+    ];
+    const forest = docsToForest(docArray);
+    assert.deepEqual(forest, [
+      {
+        doc: doc('Books', 1, 12), children: [
+          {
+            doc: doc('Programming', 2, 11), children: [
+              { doc: doc('Languages', 3, 4), children: [] },
+              {
+                doc: doc('Databases', 5, 10), children: [
+                  { doc: doc('MongoDB', 6, 7), children: [] },
+                  { doc: doc('dbm', 8, 9), children: [] },
+                ]
+              }
+            ]
+          }
+        ]
+      }
+    ]);
+  });
+  it('Can recalculate left and right for docs with set parents', function () {
+    const docArray = [
+      doc('Books', 71, 33, undefined),
+      doc('Programming', 72, 33, 'Books'),
+      doc('Languages', 73, 33, 'Programming'),
+      doc('Databases', 74, 33, 'Programming'),
+      doc('MongoDB', 75, 33, 'Databases'),
+      doc('dbm', 76, 33, 'Databases'),
+    ];
+    const ops = calculateNestedSetOperations(docArray);
+    assert.deepEqual(ops, [
+      op('Books', 1, 12),
+      op('Programming', 2, 11),
+      op('Languages', 3, 4),
+      op('Databases', 5, 10),
+      op('MongoDB', 6, 7),
+      op('dbm', 8, 9),
+    ]);
+  });
+});