added tests. bs tests, but tests

src/components/table/dataset.spec.ts

@@ -0,0 +1,133 @@
+import { describe, expect, it } from "bun:test";
+import { createDataSet } from "./dataset";
+
+interface DataEntry {
+    id: string;
+    name: string;
+    amount: number;
+};
+const defaultData: DataEntry[] = [
+    { id: '1', name: 'a first name', amount: 30 },
+    { id: '2', name: 'a second name', amount: 20 },
+    { id: '3', name: 'a third name', amount: 10 },
+];
+
+describe('dataset', () => {
+    describe('createDataset', () => {
+        it('can create an instance', async () => {
+            // Arrange
+
+            // Act
+            const actual = createDataSet(defaultData);
+
+            // Assert
+            expect(actual).toMatchObject({ data: defaultData })
+        });
+
+        it('can sort by a property', async () => {
+            // Arrange
+
+            // Act
+            const actual = createDataSet(defaultData, { sort: { by: 'amount', reversed: false } });
+
+            // Assert
+            expect(actual.nodes()).toEqual([
+                expect.objectContaining({ key: 2 }),
+                expect.objectContaining({ key: 1 }),
+                expect.objectContaining({ key: 0 }),
+            ])
+        });
+
+        it('can group by a property', async () => {
+            // Arrange
+
+            // Act
+            const actual = createDataSet(defaultData, { group: { by: 'name' } });
+
+            // Assert
+            expect(actual).toEqual(expect.objectContaining({ data: defaultData }))
+        });
+
+        describe('mutate', () => {
+            it('mutates the value', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.mutate(0, 'amount', 100);
+
+                // Assert
+                expect(dataset.value[0]!.amount).toBe(100);
+            });
+        });
+
+        describe('mutateEach', () => {
+            it('mutates all the entries', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.mutateEach(entry => ({ ...entry, amount: entry.amount + 5 }));
+
+                // Assert
+                expect(dataset.value).toEqual([
+                    expect.objectContaining({ amount: 35 }),
+                    expect.objectContaining({ amount: 25 }),
+                    expect.objectContaining({ amount: 15 }),
+                ]);
+            });
+        });
+
+        describe('remove', () => {
+            it('removes the 2nd entry', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.remove([1]);
+
+                // Assert
+                expect(dataset.value[1]).toBeUndefined();
+            });
+        });
+
+        describe('insert', () => {
+            it('adds an entry to the dataset', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.insert({ id: '4', name: 'name', amount: 100 });
+
+                // Assert
+                expect(dataset.value[3]).toEqual({ id: '4', name: 'name', amount: 100 });
+            });
+        });
+
+        describe('sort', () => {
+            it('can set the sorting', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.sort({ by: 'id', reversed: true });
+
+                // Assert
+                expect(dataset.sorting).toEqual({ by: 'id', reversed: true });
+            });
+        });
+
+        describe('group', () => {
+            it('can set the grouping', async () => {
+                // Arrange
+                const dataset = createDataSet(defaultData);
+
+                // Act
+                dataset.group({ by: 'id' });
+
+                // Assert
+                expect(dataset.grouping).toEqual({ by: 'id' });
+            });
+        });
+    });
+});