github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/cleanup/cleanup_test.go (about)

     1  // Copyright 2020 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package cleanup
    16  
    17  import "testing"
    18  
    19  func testCleanupHelper(clean, cleanAdd *bool, release bool) func() {
    20  	cu := Make(func() {
    21  		*clean = true
    22  	})
    23  	cu.Add(func() {
    24  		*cleanAdd = true
    25  	})
    26  	defer cu.Clean()
    27  	if release {
    28  		return cu.Release()
    29  	}
    30  	return nil
    31  }
    32  
    33  func TestCleanup(t *testing.T) {
    34  	clean := false
    35  	cleanAdd := false
    36  	testCleanupHelper(&clean, &cleanAdd, false)
    37  	if !clean {
    38  		t.Fatalf("cleanup function was not called.")
    39  	}
    40  	if !cleanAdd {
    41  		t.Fatalf("added cleanup function was not called.")
    42  	}
    43  }
    44  
    45  func TestRelease(t *testing.T) {
    46  	clean := false
    47  	cleanAdd := false
    48  	cleaner := testCleanupHelper(&clean, &cleanAdd, true)
    49  
    50  	// Check that clean was not called after release.
    51  	if clean {
    52  		t.Fatalf("cleanup function was called.")
    53  	}
    54  	if cleanAdd {
    55  		t.Fatalf("added cleanup function was called.")
    56  	}
    57  
    58  	// Call the cleaner function and check that both cleanup functions are called.
    59  	cleaner()
    60  	if !clean {
    61  		t.Fatalf("cleanup function was not called.")
    62  	}
    63  	if !cleanAdd {
    64  		t.Fatalf("added cleanup function was not called.")
    65  	}
    66  }