Skip installation of certificates if them already esists.

Author: daquinoaldo

cert/generate.js

@@ -54,11 +54,19 @@ function mkcert(path, exe) {
 }
 
 async function main() {
+  console.info("Generating certificates...")
+  const path = "cert" + /* istanbul ignore next: cannot be tested */
+    (process.platform === "win32" ? "\\" : "/")
+  // Check if files already exists
+  if (fs.existsSync(path + "localhost.crt") &&
+    /* istanbul ignore next: not relevant */
+    fs.existsSync(path + "localhost.key")) {
+    console.info("Certificates already exists. Skip.")
+    return
+  }
   const url = "https://github.com/FiloSottile/mkcert/releases/download/" +
     MKCERT_VERSION + "/"
   const exe = getExe()
-  const path = "cert" + /* istanbul ignore next: cannot be tested */
-    (process.platform === "win32" ? "\\" : "/")
   // download the executable
   await download(url + exe, path + exe)
   // make binary executable

test/test.js

@@ -34,7 +34,28 @@ function makeRequest(path = "/", secure = true, port = HTTPS_PORT) {
   })
 }
 
-// TESTS
+// TESTS INSTALL
+describe("Testing the installation script", function() {
+  // timeout 5 min
+  this.timeout(300000)
+
+  // remove a file, this will force the reinstallation
+  fs.unlinkSync("cert/localhost.crt")
+
+  it("installs correctly", async function() {
+    await require("../cert/generate.js")()
+    assert(fs.existsSync("cert/localhost.crt"))
+    assert(fs.existsSync("cert/localhost.key"))
+  })
+
+  it("skips installation if files exists", async function() {
+    await require("../cert/generate.js")()
+    assert(fs.existsSync("cert/localhost.crt"))
+    assert(fs.existsSync("cert/localhost.key"))
+  })
+})
+
+// TESTS MODULE
 describe("Testing https-localhost", () => {
   // close the server after each test
   afterEach(() => app.server.close())
@@ -120,15 +141,3 @@ describe("Testing https-localhost", () => {
       .then(res => assert(res.headers["content-encoding"] === "gzip"))
   })
 })
-
-// TESTS
-describe("Testing the installation script", function() {
-  // timeout 5 min
-  this.timeout(300000)
-
-  it("installs correctly", async function() {
-    await require("../cert/generate.js")()
-    assert(fs.existsSync("cert/localhost.crt"))
-    assert(fs.existsSync("cert/localhost.key"))
-  })
-})