github.com/containerd/Containerd@v1.4.13/namespaces/context_test.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package namespaces
    18  
    19  import (
    20  	"context"
    21  	"os"
    22  	"testing"
    23  )
    24  
    25  func TestContext(t *testing.T) {
    26  	ctx := context.Background()
    27  	namespace, ok := Namespace(ctx)
    28  	if ok {
    29  		t.Fatal("namespace should not be present")
    30  	}
    31  
    32  	if namespace != "" {
    33  		t.Fatalf("namespace should not be defined: got %q", namespace)
    34  	}
    35  
    36  	expected := "test"
    37  	nctx := WithNamespace(ctx, expected)
    38  
    39  	namespace, ok = Namespace(nctx)
    40  	if !ok {
    41  		t.Fatal("expected to find a namespace")
    42  	}
    43  
    44  	if namespace != expected {
    45  		t.Fatalf("unexpected namespace: %q != %q", namespace, expected)
    46  	}
    47  }
    48  
    49  func TestNamespaceFromEnv(t *testing.T) {
    50  	oldenv := os.Getenv(NamespaceEnvVar)
    51  	defer os.Setenv(NamespaceEnvVar, oldenv) // restore old env var
    52  
    53  	ctx := context.Background()
    54  	namespace, ok := Namespace(ctx)
    55  	if ok {
    56  		t.Fatal("namespace should not be present")
    57  	}
    58  
    59  	if namespace != "" {
    60  		t.Fatalf("namespace should not be defined: got %q", namespace)
    61  	}
    62  
    63  	expected := "test-namespace"
    64  	os.Setenv(NamespaceEnvVar, expected)
    65  	nctx := NamespaceFromEnv(ctx)
    66  
    67  	namespace, ok = Namespace(nctx)
    68  	if !ok {
    69  		t.Fatal("expected to find a namespace")
    70  	}
    71  
    72  	if namespace != expected {
    73  		t.Fatalf("unexpected namespace: %q != %q", namespace, expected)
    74  	}
    75  }