📏 Add specific length string schema

src/constants/validationSchemas.ts

@@ -17,3 +17,15 @@ export const positiveNumberSchema = (fieldName: string) => {
     message: errorMessages.positiveNumber(fieldName),
   });
 };
+
+export const specificLengthStringSchema = (
+  fieldName: string,
+  min: number,
+  max: number,
+) => {
+  return z
+    .string()
+    .max(max, { message: errorMessages.maxLength(fieldName, max) })
+    .trim()
+    .min(min, { message: errorMessages.minLength(fieldName, min) });
+};

tests/unit/validation/validationSchemas.test.ts

@@ -0,0 +1,33 @@
+import { specificLengthStringSchema } from "@/constants/validationSchemas";
+import { describe, expect, test } from "vitest";
+
+describe("specificLengthStringSchema", () => {
+  const fieldName = "field";
+  const minLength = 1;
+  const maxLength = 500;
+  const schema = specificLengthStringSchema(fieldName, minLength, maxLength);
+
+  test("rejects empty string", () => {
+    expect(() => schema.parse("")).toThrow();
+  });
+
+  test("rejects string with only spaces", () => {
+    expect(() => schema.parse(" ")).toThrow();
+  });
+
+  test("rejects string shorter than min length", () => {
+    expect(() => schema.parse("a".repeat(minLength - 1))).toThrow();
+  });
+
+  test("rejects string longer than max length", () => {
+    expect(() => schema.parse("a".repeat(maxLength + 1))).toThrow();
+  });
+
+  test("accepts string with length equal to min length", () => {
+    expect(schema.parse("a".repeat(minLength))).toBe("a".repeat(minLength));
+  });
+
+  test("accepts string with length equal to max length", () => {
+    expect(schema.parse("a".repeat(maxLength))).toBe("a".repeat(maxLength));
+  });
+});