fix: switch to mojo proxy resolver (3-1-x) (#15813)

spec/api-session-spec.js

@@ -471,24 +471,63 @@ describe('session module', () => {
   })
 
   describe('ses.setProxy(options, callback)', () => {
+    let server = null
+    let customSession = null
+
+    beforeEach(() => {
+      customSession = session.fromPartition('proxyconfig')
+    })
+
+    afterEach(() => {
+      if (server) {
+        server.close()
+      }
+      if (customSession) {
+        customSession.destroy()
+      }
+    })
+
     it('allows configuring proxy settings', (done) => {
-      const config = {proxyRules: 'http=myproxy:80'}
-      session.defaultSession.setProxy(config, () => {
-        session.defaultSession.resolveProxy('http://localhost', (proxy) => {
-          assert.equal(proxy, 'PROXY myproxy:80')
+      const config = { proxyRules: 'http=myproxy:80' }
+      customSession.setProxy(config, () => {
+        customSession.resolveProxy('http://localhost', (proxy) => {
+          assert.strictEqual(proxy, 'PROXY myproxy:80')
           done()
         })
       })
     })
 
+    it('allows configuring proxy settings with pacScript', (done) => {
+      server = http.createServer((req, res) => {
+        const pac = `
+          function FindProxyForURL(url, host) {
+            return "PROXY myproxy:8132";
+          }
+        `
+        res.writeHead(200, {
+          'Content-Type': 'application/x-ns-proxy-autoconfig'
+        })
+        res.end(pac)
+      })
+      server.listen(0, '127.0.0.1', () => {
+        const config = { pacScript: `http://127.0.0.1:${server.address().port}` }
+        customSession.setProxy(config, () => {
+          customSession.resolveProxy('http://localhost', (proxy) => {
+            assert.strictEqual(proxy, 'PROXY myproxy:8132')
+            done()
+          })
+        })
+      })
+    })
+
     it('allows bypassing proxy settings', (done) => {
       const config = {
         proxyRules: 'http=myproxy:80',
         proxyBypassRules: '<local>'
       }
-      session.defaultSession.setProxy(config, () => {
-        session.defaultSession.resolveProxy('http://localhost', (proxy) => {
-          assert.equal(proxy, 'DIRECT')
+      customSession.setProxy(config, () => {
+        customSession.resolveProxy('http://localhost', (proxy) => {
+          assert.strictEqual(proxy, 'DIRECT')
           done()
         })
       })