fix(image): dataUri is not random

src/modules/image/index.ts

@@ -353,7 +353,7 @@ export class ImageModule {
    * @param options Options for generating a data uri.
    * @param options.width The width of the image. Defaults to `640`.
    * @param options.height The height of the image. Defaults to `480`.
-   * @param options.color The color of the image. Defaults to `grey`.
+   * @param options.color The color of the image. Defaults to a random color.
    *
    * @example
    * faker.image.dataUri() // 'data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http...'
@@ -375,14 +375,18 @@ export class ImageModule {
        */
       height?: number;
       /**
-       * The color of the image.
+       * The color of the image. Must be a color supported by svg. Defaults to a random color.
        *
-       * @default 'grey'
+       * @default faker.color.rgb()
        */
       color?: string;
     } = {}
   ): string {
-    const { width = 640, height = 480, color = 'grey' } = options;
+    const {
+      width = 640,
+      height = 480,
+      color = this.faker.color.rgb(),
+    } = options;
 
     const svgString = `<svg xmlns="http://www.w3.org/2000/svg" version="1.1" baseProfile="full" width="${width}" height="${height}"><rect width="100%" height="100%" fill="${color}"/><text x="${
       width / 2

test/modules/__snapshots__/image.spec.ts.snap

@@ -181,5 +181,3 @@ exports[`image > 1337 > urlPlaceholder > with width 1`] = `"https://via.placehol
 exports[`image > 1337 > urlPlaceholder > with width and height 1`] = `"https://via.placeholder.com/128x128/5c346b/a075bd.jpeg?text=conculco%20voluptatibus%20cerno"`;
 
 exports[`image > dataUri > should return a background color data URI 1`] = `"data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20version%3D%221.1%22%20baseProfile%3D%22full%22%20width%3D%22200%22%20height%3D%22300%22%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22red%22%2F%3E%3Ctext%20x%3D%22100%22%20y%3D%22150%22%20font-size%3D%2220%22%20alignment-baseline%3D%22middle%22%20text-anchor%3D%22middle%22%20fill%3D%22white%22%3E200x300%3C%2Ftext%3E%3C%2Fsvg%3E"`;
-
-exports[`image > dataUri > should return a blank data 1`] = `"data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20version%3D%221.1%22%20baseProfile%3D%22full%22%20width%3D%22200%22%20height%3D%22300%22%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22grey%22%2F%3E%3Ctext%20x%3D%22100%22%20y%3D%22150%22%20font-size%3D%2220%22%20alignment-baseline%3D%22middle%22%20text-anchor%3D%22middle%22%20fill%3D%22white%22%3E200x300%3C%2Ftext%3E%3C%2Fsvg%3E"`;

test/modules/image.spec.ts

@@ -471,8 +471,9 @@ describe('image', () => {
 
   describe('dataUri', () => {
     it('should return a blank data', () => {
+      const expectedPattern = /^data:image\/svg\+xml;charset=UTF-8,/;
       const dataUri = faker.image.dataUri({ width: 200, height: 300 });
-      expect(dataUri).toMatchSnapshot();
+      expect(dataUri).toMatch(expectedPattern);
     });
 
     it('should return a background color data URI', () => {