package main import "testing" func TestCodexModelsURL(t *testing.T) {	got, err := codexModelsURL(" 0.144.1 ")	if err != nil {		t.Fatalf("codexModelsURL: %v", err)	}	want := "https://chatgpt.com/backend-api/codex/models?client_version=0.144.1"	if got != want {		t.Fatalf("codexModelsURL = %q, want %q", got, want)	}} func TestCountModels(t *testing.T) {	count, err := countModels([]byte(`{"models":[{"slug":"a"},{"slug":"b"}]}`))	if err != nil {		t.Fatalf("countModels(valid): %v", err)	}	if count != 2 {		t.Fatalf("countModels(valid) = %d, want 2", count)	} 	// Upstream dumps may omit CPA catalog-required fields; counting must still work.	count, err = countModels([]byte(`{"models":[{"slug":"gpt-5.6-sol"}]}`))	if err != nil {		t.Fatalf("countModels(incomplete upstream model): %v", err)	}	if count != 1 {		t.Fatalf("countModels(incomplete upstream model) = %d, want 1", count)	} 	count, err = countModels([]byte(`{"models":[]}`))	if err != nil {		t.Fatalf("countModels(empty): %v", err)	}	if count != 0 {		t.Fatalf("countModels(empty) = %d, want 0", count)	} 	if _, err := countModels([]byte(`{"models":`)); err == nil {		t.Fatal("countModels(malformed) error = nil, want error")	}	if _, err := countModels([]byte(`{}`)); err == nil {		t.Fatal("countModels(missing models) error = nil, want error")	}}