commit 7457ee7eb808f0b020a5df104734a2fb03313c49
author Roshan Pius <rpius@google.com> Mon Apr 23 10:42:45 2018 -0700
committer Roshan Pius <rpius@google.com> Tue Apr 24 13:56:43 2018 -0700
tree 05dfa199cf28e5614b3d604f4f857175b811b4c7
parent e549804b9d0e4ae2cca84a13c19838c5c8398df1

WifiManagerTest: Fetch scan results only on scan success

When wifi location scans are off, the scan is expected to fail. But,
WifiManager.getScanResults() could still return results from the last
scan. This was causing the test to fail because it was relying on
|mScanResults| being null to detect scan failure.

Also, changed the scan done internal state name in the test to more accurately
reflect that scan has been completed (could be success or failure).

Bug: 77601152
Test: Ran `atest android.net.wifi.cts.WifiManagerTest#
testWifiManagerScanWhenWifiOffLocationTurnedOn` with location turned on,
but wifi scans turned off.

Change-Id: I6d5203a836d86d03fbb8e9af0035fe951a6b9db8