🧪 test: add test cases for seriesToBars

tests/data/sources/dnsePublic.test.ts

@@ -0,0 +1,57 @@
+import { describe, it, expect } from "vitest";
+import { seriesToBars, OhlcvSeries } from "../../../src/data/sources/dnsePublic.js";
+
+describe("dnsePublic", () => {
+  describe("seriesToBars", () => {
+    it("converts OhlcvSeries to Bar[]", () => {
+      const series: OhlcvSeries = {
+        t: [1000, 2000],
+        o: [10, 20],
+        h: [15, 25],
+        l: [5, 15],
+        c: [12, 22],
+        v: [100, 200],
+      };
+
+      const bars = seriesToBars(series);
+
+      expect(bars).toEqual([
+        { time: 1000, open: 10, high: 15, low: 5, close: 12, volume: 100 },
+        { time: 2000, open: 20, high: 25, low: 15, close: 22, volume: 200 },
+      ]);
+    });
+
+    it("handles empty series", () => {
+      const series: OhlcvSeries = {
+        t: [],
+        o: [],
+        h: [],
+        l: [],
+        c: [],
+        v: [],
+      };
+
+      const bars = seriesToBars(series);
+
+      expect(bars).toEqual([]);
+    });
+
+    it("skips intraday slots where close is null", () => {
+      const series: OhlcvSeries = {
+        t: [1000, 2000, 3000],
+        o: [10, 20, 30],
+        h: [15, 25, 35],
+        l: [5, 15, 25],
+        c: [12, null as unknown as number, 32],
+        v: [100, 200, 300],
+      };
+
+      const bars = seriesToBars(series);
+
+      expect(bars).toEqual([
+        { time: 1000, open: 10, high: 15, low: 5, close: 12, volume: 100 },
+        { time: 3000, open: 30, high: 35, low: 25, close: 32, volume: 300 },
+      ]);
+    });
+  });
+});