Fix make test failed

[heysion]

Fix make test failed

Start 1: test_libappimage++
1/5 Test #1: test_libappimage++ ...............   Passed    0.03 sec
    Start 2: TestDesktopIntegration
2/5 Test #2: TestDesktopIntegration ...........   Passed    0.06 sec
    Start 3: test_libappimage
3/5 Test #3: test_libappimage .................   Passed    0.26 sec
    Start 4: test_shared
4/5 Test #4: test_shared ......................   Passed    0.00 sec
    Start 5: test-xdg-basedir
5/5 Test #5: test-xdg-basedir .................   Passed    0.00 sec

100% tests passed, 0 tests failed out of 5

Total Test time (real) =   0.35 sec

[azubieta]

I'm not sure we need to un-set the environment variable when they will be override in the next line.

In the thumbnail generation you are just ignoring the error, that's not a fix.

[azubieta]

The idea here is to ensure that the file is created, if this test fails there may be an error somewhere because the icon wasn't created were it is expected.

[heysion]

I understand of this test case was incorrect , I will retry to fix this failed.

[azubieta]

The idea here is to ensure that the file is created, if this test fails there may be an error somewhere because the icon wasn't created were it is expected.

[azubieta]

I don't think that we need to unset the environment if we are overriding it in the next line.

[azubieta]

I don't think that we need to unset the environment if we are overriding it in the next line.

[azubieta]

I don't think that we need to unset the environment if we are overriding it in the next line.