Error: is it currently building

[piotrfalba]

Description

Test just stops after start.
1) "before all" hook: Error: is it currently building ? at SimulatorDriver._callee$ (node_modules/detox/lib/devices/IosDriver.js:38:19) at tryCatch (node_modules/babel-polyfill/node_modules/regenerator-runtime/runtime.js:65:40) at Generator.invoke [as _invoke] (node_modules/babel-polyfill/node_modules/regenerator-runtime/runtime.js:303:22) at Generator.prototype.(anonymous function) [as next] (node_modules/babel-polyfill/node_modules/regenerator-runtime/runtime.js:117:21) at step (node_modules/detox/lib/devices/IosDriver.js:1:1281) at node_modules/detox/lib/devices/IosDriver.js:1:1441 at <anonymous> at process._tickCallback (internal/process/next_tick.js:188:7)

Steps to Reproduce

Just started the test.

Node, Device, Xcode and macOS Versions

Node: v8.3.0
Device: iPhone 6
Xcode: 9.0
macOS: 10.12.6

[rotemmiz]

This is a not-at-all-clear error I added a few days ago when I merged the SwiftSupport branch. From Detox 5.7.0 onwards we have a new way delivering Detox framework to the user, instead of bundling a precompiled framework, it is now being built on the user's machine in order to be built with a matching swift version.

The error you see means that the the directory which Detox framework is being built to exists (~/Library/Detox/{hash}/) but Detox.framework does not exist inside it. This can be caused if you ran detox test , the framework build process started, but was interrupted.
I will add a more verbose error there... sorry for that