Update Cypress and Jest versions and remove Node 8 support

.changeset/five-students-joke.md

@@ -0,0 +1,5 @@
+---
+"frontity": patch
+---
+
+Deprecate the `URL` import from `"frontity"` in favor of the `new URL` global that is now present in both the browser and Node 10+.

.github/workflows/unit-tests.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [8.x, 10.x, 12.x]
+        node-version: [10.x, 12.x]
 
     steps:
       - name: Checkout

e2e/e2e.js

@@ -36,6 +36,9 @@ prod = prod || false;
 cypressCommand = cypressCommand || "open";
 suite = suite || "all";
 
+// Flag to know if we have started Docker.
+let isDockerRunning = false;
+
 // Validate CLI args.
 validateArgs(target, { possibleValues: ["es5", "module", "both"] });
 validateArgs(browser, { possibleValues: ["firefox", "chrome", "edge"] });
@@ -62,6 +65,9 @@ process.chdir(__dirname);
       // (in the background via the -d flag).
       await execa("docker-compose", ["up", "-d"], { stdio: "inherit" });
 
+      // Set the flag. We will needed it later to stop the containers.
+      isDockerRunning = true;
+
       // Wait until WordPress is responsive.
       await waitOn({
         resources: ["http-get://localhost:8080"],
@@ -73,7 +79,7 @@ process.chdir(__dirname);
       // instances for testing.
       await execa(
         "docker-compose",
-        ["run", "wp", "/bin/bash", "-c", "chmod -R 777 /var/www/html"],
+        ["run", "--rm", "wp", "/bin/bash", "-c", "chmod -R 777 /var/www/html"],
         { stdio: "inherit" }
       );
     }
@@ -149,12 +155,29 @@ process.chdir(__dirname);
           });
         }
       }
-      // Exit the process once Cypress ends.
+
+      if (isDockerRunning) {
+        // Stop all the containers and remove all the volumes that they use (the
+        // `-v` option).
+        await execa("docker-compose", ["down", "-v"], {
+          stdio: "inherit",
+        });
+      }
+
+      // Exit the process to indicate that everything went fine.
       process.exit(0);
     }
   } catch (err) {
     console.error(err);
 
+    if (isDockerRunning) {
+      // Stop all the containers and remove all the volumes that they use (the
+      // `-v` option).
+      await execa("docker-compose", ["down", "-v"], {
+        stdio: "inherit",
+      });
+    }
+
     // We need to return the exit code so that the GitHub action returns a fail.
     process.exit(1);
   }

e2e/integration/wordpress-01/wp-basic-tests.spec.js

@@ -29,4 +29,10 @@ describe("WordPress plugins", () => {
       "Hello from WordPress plugin"
     );
   });
+
+  it("dummy test, otherwise the previous test doesn't run", () => {
+    // I'm not sure why, but if I remove this test, the previous one doesn't run
+    // and if it fails, Cypress does not complain. I guess it is a bug in
+    // Cypress.
+  });
 });