tree 08cca911dce557a0635f7ce13d858b03fff56ced
parent e2162e545a9c6fa882f5adb884914e0318073c8a
author Mike Yu <yumike@google.com> 1583322834 +0800
committer Mike Yu <yumike@google.com> 1584517868 +0800

Add tests to cover repeated setResolverConfiguration

Two tests are added to protect the resolver when it continually
receives the same setup requests.

When the resolver receives repeated and same setup:
[1] Do not clear the cache.
[2] Do not clear the stats (the stats for cleartext DNS servers
    got from GetResolverInfo()).
[3] Do not start a new re-evaluation process for the private DNS
    servers if they have been marked as in_progress.
[4] Need not to re-validate the private DNS servers if they have
    been validated.

Another test is added to protect the implementation of aosp/1108695.

Fix: 150678049
Test: resolv_integration_test passed
Change-Id: I7a866e7e305c0fb703ccb9546d1c70ce77e2d3c7