feat(modules): port zellij module to Go

internal/modules/zellij/zellij_test.go

@@ -0,0 +1,84 @@
+package zellij
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/MDietermann/ArduinoArchSetup/internal/config"
+	"github.com/MDietermann/ArduinoArchSetup/internal/module"
+	"github.com/MDietermann/ArduinoArchSetup/internal/platform"
+)
+
+type fakeRunner struct {
+	runCalls  [][]string
+	outCalls  [][]string
+	installed map[string]bool
+}
+
+func (f *fakeRunner) Run(_ context.Context, name string, args ...string) error {
+	f.runCalls = append(f.runCalls, append([]string{name}, args...))
+	return nil
+}
+
+func (f *fakeRunner) Output(_ context.Context, name string, args ...string) ([]byte, error) {
+	f.outCalls = append(f.outCalls, append([]string{name}, args...))
+	if name == "pacman" && len(args) == 2 && args[0] == "-Q" {
+		if f.installed[args[1]] {
+			return []byte("ok"), nil
+		}
+		return nil, errOne
+	}
+	return nil, nil
+}
+
+type eo struct{}
+
+func (eo) Error() string { return "exit 1" }
+
+var errOne = eo{}
+
+type nop struct{}
+
+func (nop) Progress(string, int, int, string) {}
+func (nop) Log(string, string)                {}
+
+func TestZellijPlanAppliesInstallAndConfig(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.Write([]byte("keybinds {}\n"))
+	}))
+	defer srv.Close()
+	r := &fakeRunner{installed: map[string]bool{}}
+	m := New(config.ZellijConfig{ConfigURL: srv.URL}, platform.NewPacman(r))
+	st, _ := m.Detect(context.Background())
+	p, _ := m.Plan(context.Background(), st)
+	if err := m.Apply(context.Background(), p, nop{}); err != nil {
+		t.Fatal(err)
+	}
+	got, err := os.ReadFile(filepath.Join(home, ".config", "zellij", "config.kdl"))
+	if err != nil {
+		t.Fatalf("config not written: %v", err)
+	}
+	if string(got) != "keybinds {}\n" {
+		t.Fatalf("unexpected content %q", got)
+	}
+}
+
+func TestZellijInstalledPresentEmptyPlan(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	r := &fakeRunner{installed: map[string]bool{"zellij": true}}
+	m := New(config.ZellijConfig{ConfigURL: ""}, platform.NewPacman(r))
+	st, _ := m.Detect(context.Background())
+	p, _ := m.Plan(context.Background(), st)
+	if !p.IsEmpty() {
+		t.Fatalf("want empty plan, got %+v", p)
+	}
+}
+
+var _ module.Module = Module{}