test: add extraunits test suite

Co-authored-by: Horizontal42 <75383519+Horizontal42@users.noreply.github.com>

src/engine/extraunits.test.ts

@@ -0,0 +1,71 @@
+import { describe, it, expect } from "vitest";
+import { EXTRA_UNITS, CRYPTO } from "./extraunits";
+
+describe("EXTRA_UNITS", () => {
+  it("should be defined and not empty", () => {
+    expect(EXTRA_UNITS).toBeDefined();
+    expect(Array.isArray(EXTRA_UNITS)).toBe(true);
+    expect(EXTRA_UNITS.length).toBeGreaterThan(0);
+  });
+
+  it("should have correct properties for each extra unit", () => {
+    const validDimensions = ["speed", "pressure", "energy", "power", "frequency", "fuel"];
+
+    EXTRA_UNITS.forEach((unit) => {
+      // Required string properties
+      expect(typeof unit.id).toBe("string");
+      expect(unit.id.length).toBeGreaterThan(0);
+
+      expect(validDimensions).toContain(unit.dimension);
+
+      expect(typeof unit.ratio).toBe("string");
+      // Ratio should be parseable as a valid number
+      const parsedRatio = Number(unit.ratio);
+      expect(Number.isNaN(parsedRatio)).toBe(false);
+      expect(parsedRatio).toBeGreaterThan(0);
+
+      expect(typeof unit.format).toBe("string");
+      expect(unit.format.length).toBeGreaterThan(0);
+
+      expect(typeof unit.phrases).toBe("string");
+      expect(unit.phrases.length).toBeGreaterThan(0);
+
+      // Optional properties
+      if ("reciprocal" in unit) {
+        expect(typeof unit.reciprocal).toBe("boolean");
+      }
+
+      if ("symbols" in unit && unit.symbols !== undefined) {
+        expect(typeof unit.symbols).toBe("string");
+        expect(unit.symbols.length).toBeGreaterThan(0);
+      }
+    });
+  });
+});
+
+describe("CRYPTO", () => {
+  it("should be defined and not empty", () => {
+    expect(CRYPTO).toBeDefined();
+    expect(Array.isArray(CRYPTO)).toBe(true);
+    expect(CRYPTO.length).toBeGreaterThan(0);
+  });
+
+  it("should have correct properties for each crypto definition", () => {
+    CRYPTO.forEach((crypto) => {
+      // Required string properties
+      expect(typeof crypto.code).toBe("string");
+      expect(crypto.code.length).toBeGreaterThan(0);
+
+      expect(typeof crypto.geckoId).toBe("string");
+      expect(crypto.geckoId.length).toBeGreaterThan(0);
+
+      expect(typeof crypto.phrases).toBe("string");
+      expect(crypto.phrases.length).toBeGreaterThan(0);
+
+      // Required number property
+      expect(typeof crypto.snapshotUsd).toBe("number");
+      expect(crypto.snapshotUsd).toBeGreaterThan(0);
+      expect(Number.isNaN(crypto.snapshotUsd)).toBe(false);
+    });
+  });
+});