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Monorepo for Tangled tangled.org
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package microvm
import ( "context" "encoding/json" "log/slog" "os" "path/filepath" "strings" "testing"
"tangled.org/core/api/tangled" "tangled.org/core/spindle/config")
func writeTestImageSpec(t *testing.T, dir, name string, spec ImageSpec) { t.Helper() data, err := json.Marshal(spec) if err != nil { t.Fatal(err) } if err := os.WriteFile(filepath.Join(dir, name+".json"), data, 0o644); err != nil { t.Fatal(err) }}
func testEngine(t *testing.T, imageDir string) *Engine { t.Helper() return &Engine{ l: slog.Default(), cfg: &config.Config{ MicroVMPipelines: config.MicroVMPipelines{ ImageDir: imageDir, DefaultImage: "alpine", }, }, }}
func TestNewDefersAgentHubUntilWorkflowSetup(t *testing.T) { e, err := New(context.Background(), &config.Config{}, nil) if err != nil { t.Fatal(err) } if e.agent != nil { t.Fatal("agent hub started during engine initialization") }}
func TestInitWorkflowRejectsConfigOnNonNixOSImage(t *testing.T) { dir := t.TempDir() writeTestImageSpec(t, dir, "alpine", validImageSpec())
e := testEngine(t, dir) _, err := e.InitWorkflow(tangled.Pipeline_Workflow{ Raw: `image: alpinedependencies: - nixpkgs#hellosteps: - name: hello command: hello`, }, tangled.Pipeline{}) if err == nil { t.Fatal("expected error for NixOS config options on a non-NixOS image") } if !strings.Contains(err.Error(), "NixOS") { t.Fatalf("error should mention NixOS images, got: %v", err) }}
func TestInitWorkflowPlainStepsOnNonNixOSImage(t *testing.T) { dir := t.TempDir() writeTestImageSpec(t, dir, "alpine", validImageSpec())
e := testEngine(t, dir) wf, err := e.InitWorkflow(tangled.Pipeline_Workflow{ Raw: `image: alpinesteps: - name: hello command: echo hello`, }, tangled.Pipeline{}) if err != nil { t.Fatal(err) } if len(wf.Steps) != 1 { t.Fatalf("expected exactly the user step, got %d steps", len(wf.Steps)) } state, ok := wf.Data.(*workflowState) if !ok { t.Fatal("workflow data is not workflowState") } if state.ConfigKey != "" { t.Fatalf("non-NixOS workflow should not have a config key, got %q", state.ConfigKey) }}
func TestInitWorkflowConfigOnNixOSImage(t *testing.T) { dir := t.TempDir() spec := validImageSpec() spec.BaseConfigHash = "abcdef123456" writeTestImageSpec(t, dir, "nixos", spec)
e := testEngine(t, dir) wf, err := e.InitWorkflow(tangled.Pipeline_Workflow{ Raw: `image: nixosdependencies: - nixpkgs#hellosteps: - name: hello command: hello`, }, tangled.Pipeline{}) if err != nil { t.Fatal(err) } if len(wf.Steps) != 2 { t.Fatalf("expected activation step + user step, got %d steps", len(wf.Steps)) } if step, ok := wf.Steps[0].(Step); !ok || step.action != activationStepAction { t.Fatalf("first step should be the activation step, got %+v", wf.Steps[0]) }}