Error handling in cli system test (#2115)

system-tests/004/004.test.js

@@ -9,10 +9,29 @@ import { spawn } from "child_process"
 it("004", (done) => {
   const localPath = path.resolve(__dirname)
   const cliPath = path.join(localPath, "../../src/cli.js")
-  const cliProcess = spawn("babel-node", [ cliPath, `${localPath}/*.css` ])
+  const cliProcess = spawn(
+    "babel-node",
+    [ cliPath, `${localPath}/*.css` ],
+    {
+      cwd: localPath,
+      detached: false,
+      shell: true,
+    })
 
   cliProcess.on("close", function (code) {
     expect(code).not.toEqual(0)
     done()
   })
+
+  cliProcess.on("error", (err) => {
+    console.log("[systemTest004] cli fail:", err) // eslint-disable-line no-console
+  })
+
+  cliProcess.stdout.on("data", (data) => {
+    console.log("[systemTest004] cli stdout:", data) // eslint-disable-line no-console
+  })
+
+  cliProcess.stderr.on("data", (data) => {
+    console.log("[systemTest004] stderr:", data) // eslint-disable-line no-console
+  })
 })