test(runner): add tests for ChainloopSandbox runner

Assisted-by: Claude Code
Signed-off-by: Miguel Martinez Trivino <miguel@chainloop.dev>

Chainloop-Trace-Sessions: 3f5608e5-e869-4677-8c44-97a0b5aec207

Author: migmartri

pkg/attestation/crafter/runners/chainloopsandbox_test.go

@@ -0,0 +1,99 @@
+//
+// Copyright 2026 The Chainloop 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 runners
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+)
+
+type chainloopSandboxSuite struct {
+	suite.Suite
+	runner *ChainloopSandbox
+}
+
+func (s *chainloopSandboxSuite) TestCheckEnv() {
+	testCases := []struct {
+		name string
+		env  map[string]string
+		want bool
+	}{
+		{
+			name: "env var not set",
+			env:  map[string]string{},
+			want: false,
+		},
+		{
+			name: "env var set to non-empty value",
+			env:  map[string]string{"CHAINLOOP_SANDBOX": "1"},
+			want: true,
+		},
+		{
+			name: "env var set to empty string",
+			env:  map[string]string{"CHAINLOOP_SANDBOX": ""},
+			want: false,
+		},
+	}
+
+	for _, tc := range testCases {
+		s.T().Run(tc.name, func(t *testing.T) {
+			t.Setenv("CHAINLOOP_SANDBOX", "")
+			for k, v := range tc.env {
+				t.Setenv(k, v)
+			}
+			s.Equal(tc.want, s.runner.CheckEnv())
+		})
+	}
+}
+
+func (s *chainloopSandboxSuite) TestListEnvVars() {
+	s.Empty(s.runner.ListEnvVars())
+}
+
+func (s *chainloopSandboxSuite) TestResolveEnvVars() {
+	resolved, errors := s.runner.ResolveEnvVars()
+	s.Empty(errors)
+	s.Empty(resolved)
+}
+
+func (s *chainloopSandboxSuite) TestRunURI() {
+	s.Empty(s.runner.RunURI())
+}
+
+func (s *chainloopSandboxSuite) TestWorkflowFilePath() {
+	s.Empty(s.runner.WorkflowFilePath())
+}
+
+func (s *chainloopSandboxSuite) TestIsAuthenticated() {
+	s.False(s.runner.IsAuthenticated())
+}
+
+func (s *chainloopSandboxSuite) TestEnvironment() {
+	s.Equal(Unknown, s.runner.Environment())
+}
+
+func (s *chainloopSandboxSuite) TestRunnerName() {
+	s.Equal("CHAINLOOP_SANDBOX", s.runner.ID().String())
+}
+
+func (s *chainloopSandboxSuite) SetupTest() {
+	s.runner = NewChainloopSandbox()
+}
+
+func TestChainloopSandboxRunner(t *testing.T) {
+	suite.Run(t, new(chainloopSandboxSuite))
+}