update chai tests

Author: Adrinlol

src/index.test.js

@@ -1,10 +1,12 @@
-const colorGradient = require("./index");
+const Gradient = require("./index");
 const expect = require("chai").expect;
 
 describe("javascript-color-gradient", function () {
   describe("getArray", function () {
     it("should return an array of strings", function () {
-      expect(colorGradient.getArray).to.satisfy(isArrayOfStrings);
+      expect(
+        new Gradient().setColorGradient("#3F2CAF", "#8BC2E3").getColors()
+      ).to.satisfy(isArrayOfStrings);
 
       function isArrayOfStrings() {
         return function (item) {
@@ -14,9 +16,9 @@ describe("javascript-color-gradient", function () {
     });
   });
 
-  describe("setGradient", function () {
+  describe("setColorGradient", function () {
     it("type should be an object", function () {
-      expect(colorGradient.setGradient("#3F2CAF", "#8BC2E3")).to.satisfy(
+      expect(new Gradient().setColorGradient("#3F2CAF", "#8BC2E3")).to.satisfy(
         isObject
       );
 
@@ -26,9 +28,13 @@ describe("javascript-color-gradient", function () {
     });
   });
 
-  describe("getArray", function () {
+  describe("getColors", function () {
     it("array length should be 10", function () {
-      expect(colorGradient.getArray("#3F2CAF", "#8BC2E3")).to.satisfy(isArray);
+      expect(
+        new Gradient()
+          .setColorGradient("#3F2CAF", "e9446a")
+          .getColors("#3F2CAF", "#8BC2E3")
+      ).to.satisfy(isArray);
 
       function isArray(object) {
         return object.length === 10;
@@ -38,10 +44,15 @@ describe("javascript-color-gradient", function () {
 
   describe("getColor", function () {
     it("should be equal to #8bc2e3", function () {
-      expect(colorGradient.getColor(10)).to.satisfy(isEqual);
+      expect(
+        new Gradient()
+          .setColorGradient("#3F2CAF", "e9446a")
+          .setMidpoint(20)
+          .getColor(2)
+      ).to.satisfy(isEqual);
 
       function isEqual(item) {
-        return item === "#8bc2e3";
+        return item === "#5930a5";
       }
     });
   });