chore(go): inject stdin and pass rc force explicitly

internal/homesick/core/core_test.go

@@ -6,9 +6,19 @@ import (
 	"testing"
 )
 
-func TestNewRejectsNilWriters(t *testing.T) {
+func TestNewAppRejectsNilReaders(t *testing.T) {
+	t.Run("nil stdin", func(t *testing.T) {
+		app, err := NewApp(nil, &bytes.Buffer{}, &bytes.Buffer{})
+		if err == nil {
+			t.Fatal("expected error for nil stdin")
+		}
+		if app != nil {
+			t.Fatal("expected nil app for nil stdin")
+		}
+	})
+
 	t.Run("nil stdout", func(t *testing.T) {
-		app, err := New(nil, &bytes.Buffer{})
+		app, err := NewApp(new(bytes.Buffer), nil, &bytes.Buffer{})
 		if err == nil {
 			t.Fatal("expected error for nil stdout")
 		}
@@ -18,7 +28,7 @@ func TestNewRejectsNilWriters(t *testing.T) {
 	})
 
 	t.Run("nil stderr", func(t *testing.T) {
-		app, err := New(&bytes.Buffer{}, nil)
+		app, err := NewApp(new(bytes.Buffer), &bytes.Buffer{}, nil)
 		if err == nil {
 			t.Fatal("expected error for nil stderr")
 		}
@@ -49,11 +59,12 @@ func TestDeriveDestination(t *testing.T) {
 	}
 }
 
-func TestNewInitializesApp(t *testing.T) {
+func TestNewAppInitializesApp(t *testing.T) {
+	stdin := new(bytes.Buffer)
 	stdout := &bytes.Buffer{}
 	stderr := &bytes.Buffer{}
 
-	app, err := New(stdout, stderr)
+	app, err := NewApp(stdin, stdout, stderr)
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -61,6 +72,9 @@ func TestNewInitializesApp(t *testing.T) {
 		t.Fatal("expected app instance")
 	}
 
+	if app.Stdin != stdin {
+		t.Fatal("expected stdin reader to be assigned")
+	}
 	if app.Stdout != stdout {
 		t.Fatal("expected stdout writer to be assigned")
 	}