Add test for WifiInfo#getFrequency()

Add getFrequency() to WifiInfoTest (along with other missing getters),
and test that it is consistent with ScanResult in ScanResultTest.

Test: atest android.net.wifi.cts.ScanResultTest
Fixes: b/138929469
Change-Id: I070b16661bc72a5c5035b0b227821b680d7d71ba
2 files changed
tree: a4780b4e9366decaa9126b8f9f2668bd0de8896c
  1. tests/