feat: added journald collection package to bootstrapper internal packages

bootstrapper/internal/journald/journald_test.go

@@ -0,0 +1,64 @@
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+package journald
+
+import (
+	"errors"
+	"os/exec"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type stubJournaldCommand struct {
+	outputReturn []byte
+	outputError  error
+}
+
+func (j *stubJournaldCommand) Output() ([]byte, error) {
+	return j.outputReturn, j.outputError
+}
+
+func TestCollect(t *testing.T) {
+	someError := errors.New("failed")
+
+	testCases := map[string]struct {
+		command      *stubJournaldCommand
+		wantedOutput []byte
+		wantErr      bool
+	}{
+		"success": {
+			command: &stubJournaldCommand{},
+		},
+		"execution failed": {
+			command: &stubJournaldCommand{outputError: someError},
+			wantErr: true,
+		},
+		"exit error": {
+			command: &stubJournaldCommand{outputError: &exec.ExitError{}},
+			wantErr: true,
+		},
+		"output check": {
+			command:      &stubJournaldCommand{outputReturn: []byte("asdf")},
+			wantedOutput: []byte("asdf"),
+		},
+	}
+
+	for name, tc := range testCases {
+		t.Run(name, func(t *testing.T) {
+			assert := assert.New(t)
+
+			collector := Collector{cmd: tc.command}
+
+			out, err := collector.Collect()
+			if tc.wantErr {
+				assert.Error(err)
+			}
+			assert.Equal(out, tc.wantedOutput)
+		})
+	}
+}