| 1 | package billing |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "net/http" |
| 6 | "net/http/httptest" |
| 7 | "strings" |
| 8 | "testing" |
| 9 | ) |
| 10 | |
| 11 | // --- symbol --- |
| 12 | |
| 13 | func TestSymbolCNY(t *testing.T) { |
| 14 | if got := symbol("CNY"); got != "¥" { |
| 15 | t.Errorf("symbol(CNY) = %q", got) |
| 16 | } |
| 17 | } |
| 18 | |
| 19 | func TestSymbolRMB(t *testing.T) { |
| 20 | if got := symbol("RMB"); got != "¥" { |
| 21 | t.Errorf("symbol(RMB) = %q", got) |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | func TestSymbolUSD(t *testing.T) { |
| 26 | if got := symbol("USD"); got != "$" { |
| 27 | t.Errorf("symbol(USD) = %q", got) |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | func TestSymbolUnknown(t *testing.T) { |
| 32 | if got := symbol("EUR"); got != "EUR " { |
| 33 | t.Errorf("symbol(EUR) = %q, want \"EUR \"", got) |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | func TestSymbolEmpty(t *testing.T) { |
| 38 | if got := symbol(""); got != "" { |
| 39 | t.Errorf("symbol(\"\") = %q, want empty", got) |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | func TestSymbolLowercase(t *testing.T) { |
| 44 | // symbol should be case-insensitive. |
| 45 | if got := symbol("usd"); got != "$" { |
| 46 | t.Errorf("symbol(usd) = %q", got) |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | // --- Display --- |
| 51 | |
| 52 | func TestDisplayNil(t *testing.T) { |
| 53 | var b *Balance |
| 54 | if got := b.Display(); got != "" { |
| 55 | t.Errorf("nil Display = %q", got) |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | func TestDisplayEmptyInfos(t *testing.T) { |
| 60 | b := &Balance{Available: true} |
| 61 | if got := b.Display(); got != "" { |
| 62 | t.Errorf("empty infos Display = %q", got) |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | func TestDisplayPrefersCNY(t *testing.T) { |
| 67 | b := &Balance{Infos: []Info{ |
| 68 | {Currency: "USD", TotalBalance: "10.00"}, |
| 69 | {Currency: "CNY", TotalBalance: "50.00"}, |
| 70 | }} |
| 71 | if got := b.Display(); got != "¥50.00" { |
| 72 | t.Errorf("Display = %q, want ¥50.00", got) |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | func TestDisplayFallsBackToFirst(t *testing.T) { |
| 77 | b := &Balance{Infos: []Info{ |
| 78 | {Currency: "EUR", TotalBalance: "25.00"}, |
| 79 | }} |
| 80 | if got := b.Display(); got != "EUR 25.00" { |
| 81 | t.Errorf("Display = %q, want \"EUR 25.00\"", got) |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | // --- Fetch edge cases --- |
| 86 | |
| 87 | func TestFetchContextCancelled(t *testing.T) { |
| 88 | srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) { |
| 89 | w.WriteHeader(http.StatusOK) |
| 90 | })) |
| 91 | defer srv.Close() |
| 92 | ctx, cancel := context.WithCancel(context.Background()) |
| 93 | cancel() // cancel immediately |
| 94 | _, err := Fetch(ctx, srv.URL, "key") |
| 95 | if err == nil { |
| 96 | t.Fatal("expected error for cancelled context") |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | func TestFetchMalformedJSON(t *testing.T) { |
| 101 | srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) { |
| 102 | w.Header().Set("Content-Type", "application/json") |
| 103 | _, _ = w.Write([]byte(`{not valid json`)) |
| 104 | })) |
| 105 | defer srv.Close() |
| 106 | _, err := Fetch(context.Background(), srv.URL, "key") |
| 107 | if err == nil { |
| 108 | t.Fatal("expected error for malformed JSON") |
| 109 | } |
| 110 | if !strings.Contains(err.Error(), "decode") { |
| 111 | t.Errorf("error should mention decode: %v", err) |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | func TestFetchNoAPIKey(t *testing.T) { |
| 116 | var gotAuth string |
| 117 | srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { |
| 118 | gotAuth = r.Header.Get("Authorization") |
| 119 | w.Header().Set("Content-Type", "application/json") |
| 120 | _, _ = w.Write([]byte(`{"is_available":true,"balance_infos":[]}`)) |
| 121 | })) |
| 122 | defer srv.Close() |
| 123 | _, err := Fetch(context.Background(), srv.URL, "") |
| 124 | if err != nil { |
| 125 | t.Fatalf("Fetch: %v", err) |
| 126 | } |
| 127 | if gotAuth != "" { |
| 128 | t.Errorf("Authorization should be empty when no key, got %q", gotAuth) |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | func TestFetchWhitespaceURL(t *testing.T) { |
| 133 | b, err := Fetch(context.Background(), " ", "key") |
| 134 | if err != nil || b != nil { |
| 135 | t.Fatalf("whitespace URL should return (nil,nil), got (%v, %v)", b, err) |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | func TestFetchServerUnavailable(t *testing.T) { |
| 140 | // Use a URL that won't connect. |
| 141 | _, err := Fetch(context.Background(), "http://127.0.0.1:1", "key") |
| 142 | if err == nil { |
| 143 | t.Fatal("expected error for unavailable server") |
| 144 | } |
| 145 | } |
| 146 |