fix potentiometers route and add tests

routes/potentiometers/list.tsx

@@ -52,9 +52,12 @@ export default withWinterSpec({
     query = query.where("package", "=", params.package)
   }
 
-  // Apply exact resistance filter
+  // Apply resistance filter with a small tolerance for rounding errors
   if (params.maxResistance !== undefined) {
-    query = query.where("max_resistance", "=", params.maxResistance)
+    const delta = params.maxResistance * 0.0001
+    query = query
+      .where("max_resistance", ">=", params.maxResistance - delta)
+      .where("max_resistance", "<=", params.maxResistance + delta)
   }
 
   // Apply pin variant filter

tests/routes/potentiometers/list.test.ts

@@ -0,0 +1,37 @@
+import { test, expect } from "bun:test"
+import { getTestServer } from "tests/fixtures/get-test-server"
+
+test("GET /potentiometers/list with json param returns potentiometer data", async () => {
+  const { axios } = await getTestServer()
+
+  const res = await axios.get("/potentiometers/list?json=true")
+
+  expect(res.data).toHaveProperty("potentiometers")
+  expect(Array.isArray(res.data.potentiometers)).toBe(true)
+
+  if (res.data.potentiometers.length > 0) {
+    const pot = res.data.potentiometers[0]
+    expect(pot).toHaveProperty("lcsc")
+    expect(pot).toHaveProperty("mfr")
+    expect(pot).toHaveProperty("package")
+    expect(pot).toHaveProperty("maxResistance")
+    expect(pot).toHaveProperty("pinVariant")
+  }
+})
+
+test("GET /potentiometers/list with filters returns filtered data", async () => {
+  const { axios } = await getTestServer()
+
+  const res = await axios.get(
+    "/potentiometers/list?json=true&pinVariant=three_pin&maxResistance=10k",
+  )
+
+  expect(res.data).toHaveProperty("potentiometers")
+  expect(Array.isArray(res.data.potentiometers)).toBe(true)
+
+  for (const pot of res.data.potentiometers) {
+    expect(pot.pinVariant).toBe("three_pin")
+    const delta = Math.abs(pot.maxResistance - 10000)
+    expect(delta).toBeLessThanOrEqual(10000 * 0.0001 + 1e-9)
+  }
+})