Add user as docker backend_option (#4526)

pipeline/backend/docker/backend_options_test.go

@@ -0,0 +1,56 @@
+package docker
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	backend "go.woodpecker-ci.org/woodpecker/v2/pipeline/backend/types"
+)
+
+func Test_parseBackendOptions(t *testing.T) {
+	tests := []struct {
+		name    string
+		step    *backend.Step
+		want    BackendOptions
+		wantErr bool
+	}{
+		{
+			name: "nil options",
+			step: &backend.Step{BackendOptions: nil},
+			want: BackendOptions{},
+		},
+		{
+			name: "empty options",
+			step: &backend.Step{BackendOptions: map[string]any{}},
+			want: BackendOptions{},
+		},
+		{
+			name: "with user option",
+			step: &backend.Step{BackendOptions: map[string]any{
+				"docker": map[string]any{
+					"user": "1000:1000",
+				},
+			}},
+			want: BackendOptions{User: "1000:1000"},
+		},
+		{
+			name:    "invalid backend options",
+			step:    &backend.Step{BackendOptions: map[string]any{"docker": "invalid"}},
+			want:    BackendOptions{},
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parseBackendOptions(tt.step)
+			if tt.wantErr {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+			assert.Equal(t, tt.want, got)
+		})
+	}
+}