// Plus for spaces
    assertEscaping(e, "+", ' ');
    assertEscaping(e, "%2B", '+');

    assertEquals("safe+with+spaces", e.escape("safe with spaces"));
    assertEquals("foo%40bar.com", e.escape("foo@bar.com"));
  }

  public void testUrlPathSegmentEscaper() {
    UnicodeEscaper e = (UnicodeEscaper) urlPathSegmentEscaper();
    assertPathEscaper(e);
    assertUnescaped(e, '+');
  }

  public void testControlsArraySize() {
    ImmutableSet.Builder<String> builder = new ImmutableSet.Builder<String>();
    for (int i = 0; i < 10; i++) {
      builder.add("foo");
    }
    builder.add("bar");
    RegularImmutableSet<String> set = (RegularImmutableSet<String>) builder.build();
    assertTrue(set.elements.length <= 2 * set.size());
  }

  @GwtIncompatible("internals")
  public void testReusedBuilder() {

```JSON
{
  "item": "The Foo Wrestlers"
}
```

Aber wenn der Client `http://example.com/items/bar` anfragt (ein nicht-existierendes `item_id` `"bar"`), erhält er einen HTTP-Statuscode 404 (der „Not Found“-Fehler), und eine JSON-Response wie folgt:

```JSON
{
  "detail": "Item not found"
}
```

/// tip | Tipp

    assertThat(url.queryParameterValues("bar")).isEqualTo(listOf(null as String?))
    assertThat(url.queryParameterValues("baz")).isEqualTo(listOf(null as String?))
  }

  @Test
  fun queryParametersWithEmptyValues() {
    val url = parse("http://host/?foo=&bar=&baz=")
    assertThat(url.querySize).isEqualTo(3)
    assertThat(url.queryParameterNames).containsExactlyInAnyOrder("foo", "bar", "baz")

    MinMaxPriorityQueue<String> mmHeap =
        rawtypeToWildcard(MinMaxPriorityQueue.expectedSize(5)).create();
    Collections.addAll(mmHeap, "foo", "bar", "foobar", "barfoo", "larry", "sergey", "eric");
    assertTrue("Heap is not intact initially", mmHeap.isIntact());
    assertEquals("bar", mmHeap.peek());
    assertEquals("sergey", mmHeap.peekLast());
    assertEquals(7, mmHeap.size());

	if err := DB.Save(levelA1).Error; err != nil {
		t.Error(err)
	}

	want := []*LevelA2{
		{
			Value: "bar",
			LevelA3s: []*LevelA3{
				{
					Value:   "qux",
					LevelA1: levelA1,
				},
			},
		},
		{
			Value:    "bar 2",
			LevelA3s: []*LevelA3{},
		},
	}
	for _, levelA2 := range want {
		if err := DB.Save(levelA2).Error; err != nil {
			t.Error(err)

    List<Object> result = doConcurrentGet(cache, "bar", count, startSignal);

    assertEquals(1, callCount.get());
    for (int i = 0; i < count; i++) {
      assertThat(result.get(i)).isInstanceOf(InvalidCacheLoadException.class);
    }

    // subsequent calls should call the loader again, not get the old exception
    try {
      cache.getUnchecked("bar");
      fail();

🚥 👩‍💻 📨 `http://example.com/items/foo` ( `item_id` `"foo"`), 👈 👩‍💻 🔜 📨 🇺🇸🔍 👔 📟 2️⃣0️⃣0️⃣, & 🎻 📨:

```JSON
{
  "item": "The Foo Wrestlers"
}
```

✋️ 🚥 👩‍💻 📨 `http://example.com/items/bar` (🚫-🚫 `item_id` `"bar"`), 👈 👩‍💻 🔜 📨 🇺🇸🔍 👔 📟 4️⃣0️⃣4️⃣ ("🚫 🔎" ❌), & 🎻 📨:

```JSON
{
  "detail": "Item not found"
}
```

/// tip

```JSON
{
  "item": "The Foo Wrestlers"
}
```

Але якщо клієнт робить запит на `http://example.com/items/bar` (де `item_id` має не існуюче значення `"bar"`), то отримає статус-код 404 (помилка "не знайдено") та відповідь:

```JSON
{
  "detail": "Item not found"
}
```

/// tip | Порада

Wir könnten eine Instanz dieser Klasse erstellen mit:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[18] *}

Und auf diese Weise können wir unsere Abhängigkeit „parametrisieren“, die jetzt `"bar"` enthält, als das Attribut `checker.fixed_content`.

## Die Instanz als Abhängigkeit verwenden