🌱 Unit tests for checks/raw/contributors.go (#2998)

- Add tests and fix casing for Contributors function in checks/raw/contributors_test.go

Signed-off-by: naveensrinivasan <172697+naveensrinivasan@users.noreply.github.com>

Author: naveensrinivasan

checks/raw/contributors_test.go

@@ -0,0 +1,163 @@
+// Copyright 2023 OpenSSF Scorecard Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package raw
+
+import (
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	"github.com/google/go-cmp/cmp"
+
+	"github.com/ossf/scorecard/v4/clients"
+	mockrepo "github.com/ossf/scorecard/v4/clients/mockclients"
+)
+
+func TestCompanyContains(t *testing.T) {
+	t.Parallel()
+	testCases := []struct { //nolint:govet
+		name     string
+		cs       []string
+		company  string
+		expected bool
+	}{
+		{
+			name:     "company is present",
+			cs:       []string{"Google", "Facebook", "OpenAI"},
+			company:  "OpenAI",
+			expected: true,
+		},
+		{
+			name:     "company is not present",
+			cs:       []string{"Google", "Facebook", "OpenAI"},
+			company:  "Microsoft",
+			expected: false,
+		},
+		{
+			name:     "empty slice",
+			cs:       []string{},
+			company:  "Microsoft",
+			expected: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			result := companyContains(tc.cs, tc.company)
+			if result != tc.expected {
+				t.Errorf("expected %v, got %v", tc.expected, result)
+			}
+		})
+	}
+}
+
+func TestOrgContains(t *testing.T) {
+	t.Parallel()
+	testCases := []struct { //nolint:govet
+		name     string
+		os       []clients.User
+		login    string
+		expected bool
+	}{
+		{
+			name:     "user is present",
+			os:       []clients.User{{Login: "alice"}, {Login: "bob"}, {Login: "charlie"}},
+			login:    "bob",
+			expected: true,
+		},
+		{
+			name:     "user is not present",
+			os:       []clients.User{{Login: "alice"}, {Login: "bob"}, {Login: "charlie"}},
+			login:    "david",
+			expected: false,
+		},
+		{
+			name:     "empty slice",
+			os:       []clients.User{},
+			login:    "alice",
+			expected: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			t.Parallel()
+			result := orgContains(tc.os, tc.login)
+			if result != tc.expected {
+				t.Errorf("expected %v, got %v", tc.expected, result)
+			}
+		})
+	}
+}
+
+func TestContributors(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	mockRepoClient := mockrepo.NewMockRepoClient(ctrl)
+	contributors := []clients.User{
+		{
+			Login:            "user1",
+			NumContributions: 5,
+			Companies:        []string{"Company1", "Company2"},
+			Organizations: []clients.User{
+				{Login: "org1"},
+				{Login: "org2"},
+			},
+		},
+		{
+			Login:            "user2",
+			NumContributions: 3,
+			Companies:        []string{"Company3", "Company4"},
+			Organizations: []clients.User{
+				{Login: "org3"},
+				{Login: "org4"},
+			},
+		},
+	}
+
+	mockRepoClient.EXPECT().ListContributors().Return(contributors, nil)
+
+	data, err := Contributors(mockRepoClient)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	expectedUsers := []clients.User{
+		{
+			Login:            "user1",
+			NumContributions: 5,
+			Companies:        []string{"company1", "company2"},
+			Organizations: []clients.User{
+				{Login: "org1"},
+				{Login: "org2"},
+			},
+		},
+		{
+			Login:            "user2",
+			NumContributions: 3,
+			Companies:        []string{"company3", "company4"},
+			Organizations: []clients.User{
+				{Login: "org3"},
+				{Login: "org4"},
+			},
+		},
+	}
+
+	if diff := cmp.Diff(expectedUsers, data.Users); diff != "" {
+		t.Errorf("unexpected contributors data (-want +got):\n%s", diff)
+	}
+}