github.com/google/osv-scalibr@v0.4.1/converter/spdx/license_test.go (about)

     1  // Copyright 2025 Google LLC
     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 spdx_test
    16  
    17  import (
    18  	"testing"
    19  
    20  	"bitbucket.org/creachadair/stringset"
    21  	"github.com/google/go-cmp/cmp"
    22  	"github.com/google/go-cmp/cmp/cmpopts"
    23  	"github.com/google/osv-scalibr/converter/spdx"
    24  	"github.com/spdx/tools-golang/spdx/v2/v2_3"
    25  )
    26  
    27  func TestLicenseExpression(t *testing.T) {
    28  	tests := []struct {
    29  		name              string
    30  		licenses          []string
    31  		wantExpr          string
    32  		wantOtherLicenses stringset.Set
    33  	}{
    34  		{
    35  			name:              "empty licenses list",
    36  			licenses:          []string{},
    37  			wantExpr:          spdx.NoAssertion,
    38  			wantOtherLicenses: stringset.New(),
    39  		},
    40  		{
    41  			name:              "just empty string licenses",
    42  			licenses:          []string{"", "", ""},
    43  			wantExpr:          spdx.NoAssertion,
    44  			wantOtherLicenses: stringset.New(),
    45  		},
    46  		{
    47  			name:              "has non-standard",
    48  			licenses:          []string{"NON-STANDARD", "MIT"},
    49  			wantExpr:          spdx.NoAssertion,
    50  			wantOtherLicenses: stringset.New(),
    51  		},
    52  		{
    53  			name:              "has unknown",
    54  			licenses:          []string{"UNKNOWN", "MIT"},
    55  			wantExpr:          spdx.NoAssertion,
    56  			wantOtherLicenses: stringset.New(),
    57  		},
    58  		{
    59  			name:              "MIT",
    60  			licenses:          []string{"MIT"},
    61  			wantExpr:          "MIT",
    62  			wantOtherLicenses: stringset.New(),
    63  		},
    64  		{
    65  			name:              "MIT in parens",
    66  			licenses:          []string{"(MIT)"},
    67  			wantExpr:          "MIT",
    68  			wantOtherLicenses: stringset.New(),
    69  		},
    70  		{
    71  			name:              "Multiple values",
    72  			licenses:          []string{"MIT", "LGPL-2.0-only"},
    73  			wantExpr:          "LGPL-2.0-only AND MIT",
    74  			wantOtherLicenses: stringset.New(),
    75  		},
    76  		{
    77  			name:              "OR value",
    78  			licenses:          []string{"MIT OR LGPL-2.0-only"},
    79  			wantExpr:          "(MIT OR LGPL-2.0-only)",
    80  			wantOtherLicenses: stringset.New(),
    81  		},
    82  		{
    83  			name:              "non-spdx license",
    84  			licenses:          []string{"MADE UP"},
    85  			wantExpr:          "LicenseRef-MADE-UP",
    86  			wantOtherLicenses: stringset.New("MADE UP"),
    87  		},
    88  		{
    89  			name:              "OR with non-spdx license",
    90  			licenses:          []string{"MADE UP OR MIT"},
    91  			wantExpr:          "(LicenseRef-MADE-UP OR MIT)",
    92  			wantOtherLicenses: stringset.New("MADE UP"),
    93  		},
    94  		{
    95  			name:              "Complicated expression",
    96  			licenses:          []string{"MADE UP OR MIT", "(CC0-1.0 and AGPL-1.0-only)", "(MIT or LGPL-2.0-only)", "??", "CC0-1.0"},
    97  			wantExpr:          "(LicenseRef-MADE-UP OR MIT) AND (MIT OR LGPL-2.0-only) AND AGPL-1.0-only AND CC0-1.0 AND LicenseRef---",
    98  			wantOtherLicenses: stringset.New("MADE UP", "??"),
    99  		},
   100  	}
   101  	for _, tc := range tests {
   102  		t.Run(tc.name, func(t *testing.T) {
   103  			gotExpr, gotOtherLicenses := spdx.LicenseExpression(tc.licenses)
   104  			if gotExpr != tc.wantExpr {
   105  				t.Errorf("expr err - licenseExpression(%v) = %q, want %q", tc.licenses, gotExpr, tc.wantExpr)
   106  			}
   107  			if diff := cmp.Diff(tc.wantOtherLicenses, gotOtherLicenses, cmpopts.SortSlices(func(a, b *v2_3.OtherLicense) bool { return a.LicenseIdentifier < b.LicenseIdentifier })); diff != "" {
   108  				t.Errorf("custom err - licenseExpression(%v) returned unexpected diff (-want +got):\n%s", tc.licenses, diff)
   109  			}
   110  		})
   111  	}
   112  }