Update the test suite of isNumber

Author: AJCStriker

tests/validation/drivers/validators/isNumber.spec.ts

@@ -10,10 +10,16 @@ describe("isNumber", () => {
         expect(isNumber(123456789)).to.equal(123456789)
     })
 
+    it("should parse a string containing a number into a number", () => {
+        expect(isNumber("1")).to.equal(1)
+        expect(isNumber("0")).to.equal(0)
+        expect(isNumber("0.001")).to.equal(0.001)
+        expect(isNumber("-12423435.1")).to.equal(-12423435.1)
+        expect(isNumber("+100")).to.equal(100)
+    })
+
     it("should return a validation error if input is not a number", () => {
         expectToThrowCustomClass(() => isNumber({}), ValidationError)
-        expectToThrowCustomClass(() => isNumber("1"), ValidationError)
-        expectToThrowCustomClass(() => isNumber("0"), ValidationError)
         expectToThrowCustomClass(() => isNumber("das"), ValidationError)
         expectToThrowCustomClass(() => isNumber("true"), ValidationError)
         expectToThrowCustomClass(() => isNumber("false"), ValidationError)