diff --git a/test/capabilities.spec.js b/test/capabilities.spec.js
index 388083af38..65c6fff14f 100644
--- a/test/capabilities.spec.js
+++ b/test/capabilities.spec.js
@@ -17,13 +17,13 @@
 const utils = require('./utils');
 const { waitEvent } = utils;
 
-module.exports.describe = function({testRunner, expect}) {
+module.exports.describe = function({testRunner, expect, WIN, WEBKIT}) {
   const {describe, xdescribe, fdescribe} = testRunner;
   const {it, fit, xit, dit} = testRunner;
   const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
 
   describe('Capabilities', function() {
-    it('Web Assembly should work', async function({page, server}) {
+    it.skip(WEBKIT && WIN)('Web Assembly should work', async function({page, server}) {
       await page.goto(server.PREFIX + '/wasm/table2.html');
       expect(await page.evaluate(() => loadTable())).toBe('42, 83');
     });
diff --git a/test/cookies.spec.js b/test/cookies.spec.js
index 4c0765a50e..e06cdde358 100644
--- a/test/cookies.spec.js
+++ b/test/cookies.spec.js
@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-module.exports.describe = function({testRunner, expect, playwright, defaultBrowserOptions, FFOX, CHROMIUM, WEBKIT}) {
+module.exports.describe = function({testRunner, expect, playwright, defaultBrowserOptions, MAC, FFOX, CHROMIUM, WEBKIT}) {
   const {describe, xdescribe, fdescribe} = testRunner;
   const {it, fit, xit, dit} = testRunner;
   const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
@@ -51,7 +51,7 @@ module.exports.describe = function({testRunner, expect, playwright, defaultBrows
       expect(cookies.length).toBe(1);
       expect(cookies[0].httpOnly).toBe(true);
     });
-    it.skip(WEBKIT && process.platform !== 'darwin')('should properly report "Strict" sameSite cookie', async({context, page, server}) => {
+    it.skip(WEBKIT && !MAC)('should properly report "Strict" sameSite cookie', async({context, page, server}) => {
       server.setRoute('/empty.html', (req, res) => {
         res.setHeader('Set-Cookie', 'name=value;SameSite=Strict');
         res.end();
@@ -61,7 +61,7 @@ module.exports.describe = function({testRunner, expect, playwright, defaultBrows
       expect(cookies.length).toBe(1);
       expect(cookies[0].sameSite).toBe('Strict');
     });
-    it.skip(WEBKIT && process.platform !== 'darwin')('should properly report "Lax" sameSite cookie', async({context, page, server}) => {
+    it.skip(WEBKIT && !MAC)('should properly report "Lax" sameSite cookie', async({context, page, server}) => {
       server.setRoute('/empty.html', (req, res) => {
         res.setHeader('Set-Cookie', 'name=value;SameSite=Lax');
         res.end();
diff --git a/test/fixtures.spec.js b/test/fixtures.spec.js
index c2433bcca3..1f9cf1eafd 100644
--- a/test/fixtures.spec.js
+++ b/test/fixtures.spec.js
@@ -82,7 +82,7 @@ module.exports.describe = function({testRunner, expect, product, playwright, pla
     });
     it('should close the browser when the node process closes', async () => {
       const result = await testSignal(child => {
-        if (process.platform === 'win32')
+        if (WIN)
           execSync(`taskkill /pid ${child.pid} /T /F`);
         else
           process.kill(child.pid);
diff --git a/test/navigation.spec.js b/test/navigation.spec.js
index 37607a14f9..126c3cfaf5 100644
--- a/test/navigation.spec.js
+++ b/test/navigation.spec.js
@@ -18,7 +18,7 @@
 const utils = require('./utils');
 const { performance } = require('perf_hooks');
 
-module.exports.describe = function({testRunner, expect, playwright, FFOX, CHROMIUM, WEBKIT}) {
+module.exports.describe = function({testRunner, expect, playwright, MAC, WIN, FFOX, CHROMIUM, WEBKIT}) {
   const {describe, xdescribe, fdescribe} = testRunner;
   const {it, fit, xit, dit} = testRunner;
   const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
@@ -176,7 +176,7 @@ module.exports.describe = function({testRunner, expect, playwright, FFOX, CHROMI
       await page.goto('http://localhost:44123/non-existing-url').catch(e => error = e);
       if (CHROMIUM)
         expect(error.message).toContain('net::ERR_CONNECTION_REFUSED');
-      else if (WEBKIT && process.platform === 'win32')
+      else if (WEBKIT && WIN)
         expect(error.message).toContain(`Couldn\'t connect to server`);
       else if (WEBKIT)
         expect(error.message).toContain('Could not connect');
@@ -907,9 +907,9 @@ module.exports.describe = function({testRunner, expect, playwright, FFOX, CHROMI
     if (CHROMIUM) {
       expect(errorMessage).toContain('net::ERR_CERT_AUTHORITY_INVALID');
     } else if (WEBKIT) {
-      if (process.platform === 'darwin')
+      if (MAC)
         expect(errorMessage).toContain('The certificate for this server is invalid');
-      else if (process.platform === 'win32')
+      else if (WIN)
         expect(errorMessage).toContain('SSL peer certificate or SSH remote key was not OK');
       else
         expect(errorMessage).toContain('Unacceptable TLS certificate');
diff --git a/test/network.spec.js b/test/network.spec.js
index 0e81e5c861..cafa1490df 100644
--- a/test/network.spec.js
+++ b/test/network.spec.js
@@ -19,7 +19,7 @@ const fs = require('fs');
 const path = require('path');
 const utils = require('./utils');
 
-module.exports.describe = function({testRunner, expect, FFOX, CHROMIUM, WEBKIT}) {
+module.exports.describe = function({testRunner, expect, MAC, WIN, FFOX, CHROMIUM, WEBKIT}) {
   const {describe, xdescribe, fdescribe} = testRunner;
   const {it, fit, xit, dit} = testRunner;
   const {beforeAll, beforeEach, afterAll, afterEach} = testRunner;
@@ -243,9 +243,9 @@ module.exports.describe = function({testRunner, expect, FFOX, CHROMIUM, WEBKIT})
       if (CHROMIUM) {
         expect(failedRequests[0].failure().errorText).toBe('net::ERR_INVALID_HTTP_RESPONSE');
       } else if (WEBKIT) {
-        if (process.platform === 'darwin')
+        if (MAC)
           expect(failedRequests[0].failure().errorText).toBe('The network connection was lost.');
-        else if (process.platform === 'win32')
+        else if (WIN)
           expect(failedRequests[0].failure().errorText).toBe('Unsupported protocol');
         else
           expect(failedRequests[0].failure().errorText).toBe('Message Corrupt');