github.com/khulnasoft-lab/defsec@v1.0.5-0.20230827010352-5e9f46893d95/rules/cloud/policies/aws/lambda/restrict_source_arn_test.go (about)

     1  package lambda
     2  
     3  import (
     4  	"testing"
     5  
     6  	defsecTypes "github.com/khulnasoft-lab/defsec/pkg/types"
     7  
     8  	"github.com/khulnasoft-lab/defsec/pkg/state"
     9  
    10  	"github.com/khulnasoft-lab/defsec/pkg/providers/aws/lambda"
    11  	"github.com/khulnasoft-lab/defsec/pkg/scan"
    12  
    13  	"github.com/stretchr/testify/assert"
    14  )
    15  
    16  func TestCheckRestrictSourceArn(t *testing.T) {
    17  	tests := []struct {
    18  		name     string
    19  		input    lambda.Lambda
    20  		expected bool
    21  	}{
    22  		{
    23  			name: "Lambda function permission missing source ARN",
    24  			input: lambda.Lambda{
    25  				Functions: []lambda.Function{
    26  					{
    27  						Metadata: defsecTypes.NewTestMetadata(),
    28  						Permissions: []lambda.Permission{
    29  							{
    30  								Metadata:  defsecTypes.NewTestMetadata(),
    31  								Principal: defsecTypes.String("sns.amazonaws.com", defsecTypes.NewTestMetadata()),
    32  								SourceARN: defsecTypes.String("", defsecTypes.NewTestMetadata()),
    33  							},
    34  						},
    35  					},
    36  				},
    37  			},
    38  			expected: true,
    39  		},
    40  		{
    41  			name: "Lambda function permission with source ARN",
    42  			input: lambda.Lambda{
    43  				Functions: []lambda.Function{
    44  					{
    45  						Metadata: defsecTypes.NewTestMetadata(),
    46  						Permissions: []lambda.Permission{
    47  							{
    48  								Metadata:  defsecTypes.NewTestMetadata(),
    49  								Principal: defsecTypes.String("sns.amazonaws.com", defsecTypes.NewTestMetadata()),
    50  								SourceARN: defsecTypes.String("source-arn", defsecTypes.NewTestMetadata()),
    51  							},
    52  						},
    53  					},
    54  				},
    55  			},
    56  			expected: false,
    57  		},
    58  	}
    59  	for _, test := range tests {
    60  		t.Run(test.name, func(t *testing.T) {
    61  			var testState state.State
    62  			testState.AWS.Lambda = test.input
    63  			results := CheckRestrictSourceArn.Evaluate(&testState)
    64  			var found bool
    65  			for _, result := range results {
    66  				if result.Status() == scan.StatusFailed && result.Rule().LongID() == CheckRestrictSourceArn.Rule().LongID() {
    67  					found = true
    68  				}
    69  			}
    70  			if test.expected {
    71  				assert.True(t, found, "Rule should have been found")
    72  			} else {
    73  				assert.False(t, found, "Rule should not have been found")
    74  			}
    75  		})
    76  	}
    77  }