test: Add scenario that starts Bugsnag with no arguments

[bengourley]

Spiking out automated tests for #676 – starting Bugsnag with no params/arguments, loading all config from the plist. Once the approach has been ratified I can add more assertions.

@twometresteve unfortunately this breaks your dynamic manual/automatic mode:

bugsnag-cocoa/features/fixtures/ios-swift-cocoapods/iOSTestApp/ViewController.swift

Lines 51 to 63 in 8ad1c32

	let config: BugsnagConfiguration
	if (apiKeyField.text!.count > 0) {
	// Manual testing mode - use the real dashboard and the API key provided
	let apiKey = apiKeyField.text!
	NSLog("Running in manual mode with API key: %@", apiKey)
	UserDefaults.standard.setValue(apiKey, forKey: "apiKey")
	config = BugsnagConfiguration(apiKeyField.text!)
	}
	else {
	// Automation mode
	config = BugsnagConfiguration("12312312312312312312312312312312")
	config.endpoints = BugsnagEndpointConfiguration(notify: "http://bs-local.com:9339", sessions: "http://bs-local.com:9339")
	}

Since there's no place to change the values at runtime, I had to hardcode the bs local url directly in the plist. I'm not sure of a good way to resolve this.

[Cawllec]

Based on my knowledge of how the Android configuration loading worked, hard coding a URL into the plist shouldn't effect any configurations except those that load it explicitly or call Bugsnag.start with no configuration.

Is this not the case?

[Cawllec]

This should now be ready for a review

[twometresteve]

LGTM.