Speed up tool tests

Shaves a few seconds off. Kinda disappointing, I was expecting it to be more of an improvement.
Is it worth the complexity? Well, I can always go back to doing visit() before each test, if resetting the state gets more complicated.
(As long as I don't introduce actual dependency on the state from earlier tests.)

cypress/integration/tool-tests.spec.js

@@ -7,10 +7,28 @@ context('tool tests', () => {
 		failureThresholdType: 'pixel'
 	};
 
-	beforeEach(() => {
+	// beforeAll isn't a thing, and beforeEach applies also to tests declared above it,
+	// so do this fake test + flag hack in order to execute some steps before the first test
+	let before_first_real_test = true;
+	it(`(fake test for setup)`, () => {
 		cy.visit('/')
 		cy.setResolution([800, 500]);
 		cy.window().should('have.property', 'colors'); // wait for app to be loaded
+		before_first_real_test = false;
+	});
+	beforeEach(() => {
+		if (before_first_real_test) return;
+		cy.window().then({timeout: 60000}, async (win)=> {
+			win.colors.foreground = "#000";
+			win.colors.background = "#fff";
+			win.brush_shape = win.default_brush_shape;
+			win.brush_size = win.default_brush_size
+			win.eraser_size = win.default_eraser_size;
+			win.airbrush_size = win.default_airbrush_size;
+			win.pencil_size = win.default_pencil_size;
+			win.stroke_size = win.default_stroke_size;
+			win.clear();
+		});
 	});
 
 	const simulateGesture = (win, {start, end, shift, shiftToggleChance=0.01, secondary, secondaryToggleChance, target}) => {

src/app.js

@@ -26,12 +26,20 @@ let palette = default_palette;
 let polychrome_palette = palette;
 let monochrome_palette = make_monochrome_palette();
 
-let brush_shape = "circle";
-let brush_size = 4;
-let eraser_size = 8;
-let airbrush_size = 9;
-let pencil_size = 1;
-let stroke_size = 1; // lines, curves, shape outlines
+// declared like this for Cypress tests
+window.default_brush_shape = "circle";
+window.default_brush_size = 4;
+window.default_eraser_size = 8;
+window.default_airbrush_size = 9;
+window.default_pencil_size = 1;
+window.default_stroke_size = 1; // applies to lines, curves, shape outlines
+// declared like this for Cypress tests
+window.brush_shape = default_brush_shape;
+window.brush_size = default_brush_size
+window.eraser_size = default_eraser_size;
+window.airbrush_size = default_airbrush_size;
+window.pencil_size = default_pencil_size;
+window.stroke_size = default_stroke_size; // applies to lines, curves, shape outlines
 let tool_transparent_mode = false;
 
 let stroke_color;