import { expect } from "chai";
const validate: any = require("../../lib/utils/validate");

describe("util validate", () => {
  describe("validates arguments passed to methods", () => {
    it("validates its own input", () => {
      expect(() => {
        validate.argument("foo(thing)", "thing", 123, ["foo"]);
      }).to.throw('Unknown type "foo"');
    });

    [
      {
        type: "string",
        article: "a",
        goodValue: "abc",
        wrongValue: 123,
        wrongValueType: "number"
      },
      {
        type: "number",
        article: "a",
        goodValue: 123,
        wrongValue: "abc",
        wrongValueType: "string"
      },
      {
        type: "boolean",
        article: "a",
        goodValue: true,
        wrongValue: "abc",
        wrongValueType: "string"
      },
      {
        type: "array",
        article: "an",
        goodValue: [],
        wrongValue: {},
        wrongValueType: "object"
      },
      {
        type: "object",
        article: "an",
        goodValue: {},
        wrongValue: [],
        wrongValueType: "array"
      },
      {
        type: "buffer",
        article: "a",
        goodValue: new Buffer(1),
        wrongValue: 123,
        wrongValueType: "number"
      },
      {
        type: "null",
        article: "a",
        goodValue: null,
        wrongValue: 123,
        wrongValueType: "number"
      },
      {
        type: "undefined",
        article: "an",
        goodValue: undefined,
        wrongValue: 123,
        wrongValueType: "number"
      },
      {
        type: "function",
        article: "a",
        goodValue: function() {},
        wrongValue: 123,
        wrongValueType: "number"
      }
    ].forEach(test => {
      it(`validates that given thing is a(n) ${test.type}`, () => {
        expect(() => {
          validate.argument("foo(thing)", "thing", test.goodValue, [test.type]);
        }).not.to.throw();

        expect(() => {
          validate.argument("foo(thing)", "thing", test.wrongValue, [
            test.type
          ]);
        }).to.throw(
          `Argument "thing" passed to foo(thing) must be ${test.article} ${
            test.type
          }. Received ${test.wrongValueType}`
        );
      });
    });

    [
      { type: "string", value: "abc", expect: "number" },
      { type: "number", value: 123, expect: "string" },
      { type: "boolean", value: true, expect: "number" },
      { type: "array", value: [], expect: "number" },
      { type: "object", value: {}, expect: "number" },
      { type: "buffer", value: new Buffer(1), expect: "number" },
      { type: "null", value: null, expect: "number" },
      { type: "undefined", value: undefined, expect: "number" },
      { type: "function", value: function() {}, expect: "number" }
    ].forEach(test => {
      it(`can detect wrong type: ${test.type}`, () => {
        expect(() => {
          validate.argument("foo(thing)", "thing", test.value, [test.expect]);
        }).to.throw(
          `Argument "thing" passed to foo(thing) must be a ${
            test.expect
          }. Received ${test.type}`
        );
      });
    });

    it("supports more than one allowed type", () => {
      expect(() => {
        validate.argument("foo(thing)", "thing", {}, [
          "string",
          "number",
          "boolean"
        ]);
      }).to.throw(
        'Argument "thing" passed to foo(thing) must be a string or a number or a boolean. Received object'
      );
    });

    it("validates array internal data", () => {
      expect(() => {
        validate.argument(
          "foo(thing)",
          "thing",
          [1, 2, 3],
          ["array of number"]
        );
      }).not.to.throw();

      expect(() => {
        validate.argument(
          "foo(thing)",
          "thing",
          [1, 2, "a"],
          ["array of number"]
        );
      }).to.throw(
        'Argument "thing" passed to foo(thing) must be an array of number. Received array of number, string'
      );
    });
  });

  describe("validates options object", () => {
    it("options object might be undefined", () => {
      expect(() => {
        validate.options("foo(options)", "options", undefined, {
          foo: ["string"]
        });
      }).not.to.throw();
    });

    it("option key in options object is optional (doh!)", () => {
      expect(() => {
        validate.options("foo(options)", "options", {}, { foo: ["string"] });
      }).not.to.throw();
    });

    it("throws if option key definition not found", () => {
      expect(() => {
        validate.options(
          "foo(options)",
          "options",
          { bar: 123 },
          { foo: ["string"] }
        );
      }).to.throw('Unknown argument "options.bar" passed to foo(options)');
    });

    it("validates option", () => {
      expect(() => {
        validate.options(
          "foo(options)",
          "options",
          { foo: "abc" },
          { foo: ["string"] }
        );
      }).not.to.throw();

      expect(() => {
        validate.options(
          "foo(options)",
          "options",
          { foo: 123 },
          { foo: ["string"] }
        );
      }).to.throw(
        'Argument "options.foo" passed to foo(options) must be a string. Received number'
      );
    });
  });
});