CliRequest request = new CliRequest(new String[] {"-Drevision=8.1.0"}, null);

        cli.initialize(request);
        // read .mvn/maven.config
        cli.cli(request);
        cli.properties(request);

        String revision = request.getUserProperties().getProperty("revision");
        assertEquals("8.1.0", revision);
    }

    /**

                           {
                              "id": "custom.lineStyle",
                              "value": {
                                 "dash": [
                                    8,
                                    10
                                 ],
                                 "fill": "dash"
                              }
                           }
                        ]
                     }

    // overlap above
    assertEquals(Range.closed(6, 8), range.intersection(Range.closed(6, 10)));

    // adjacent above
    assertEquals(Range.openClosed(8, 8), range.intersection(Range.openClosed(8, 10)));

    // separate above
    expected =
        assertThrows(
            IllegalArgumentException.class, () -> range.intersection(Range.closed(10, 12)));

  }

  private static final ImmutableRangeSet<Integer> RANGE_SET_ONE =
      ImmutableRangeSet.<Integer>builder()
          .add(Range.closed(2, 4))
          .add(Range.open(6, 7))
          .add(Range.closedOpen(8, 10))
          .add(Range.openClosed(15, 17))
          .build();

  private static final ImmutableRangeSet<Integer> RANGE_SET_TWO =
      ImmutableRangeSet.<Integer>builder()
          .add(Range.openClosed(0, 3))

    assertEquals(ImmutableSortedSet.of(8, 10), Sets.subSet(set, Range.atLeast(7)));
    assertEquals(empty, Sets.subSet(set, Range.atLeast(20)));

    assertEquals(set, Sets.subSet(set, Range.greaterThan(0)));
    assertEquals(ImmutableSortedSet.of(6, 8, 10), Sets.subSet(set, Range.greaterThan(4)));
    assertEquals(ImmutableSortedSet.of(8, 10), Sets.subSet(set, Range.greaterThan(7)));

                </mxCell>
                <mxCell id="30" value="" style="rounded=0;whiteSpace=wrap;html=1;strokeWidth=3;" parent="1" vertex="1">
                    <mxGeometry x="1130" y="810" width="150" height="50" as="geometry"/>
                </mxCell>
            </root>
        </mxGraphModel>
    </diagram>

// Provide a block size that affects latency. If 0 a default of 128KiB will be used.
// Block size can be up to 4MiB.
func newMetacacheWriter(out io.Writer, blockSize int) *metacacheWriter {
	if blockSize < 8<<10 {
		blockSize = 128 << 10
	}
	w := metacacheWriter{
		mw:        nil,
		blockSize: blockSize,
	}
	w.creator = func() error {
		s2w := s2.NewWriter(out, s2.WriterBlockSize(blockSize), s2.WriterConcurrency(2))

/// tip

👉 👑 ⏸ 👈 👆 🔜 ✔️ 🔀 🚥 👆 💚 ⚙️ 🎏 💽.

///

### ✍ 🇸🇲 `engine`

🥇 🔁 ✍ 🇸🇲 "🚒".

👥 🔜 ⏪ ⚙️ 👉 `engine` 🎏 🥉.

```Python hl_lines="8-10"
{!../../docs_src/sql_databases/sql_app/database.py!}
```

#### 🗒

❌:

```Python
connect_args={"check_same_thread": False}
```

...💪 🕴 `SQLite`. ⚫️ 🚫 💪 🎏 💽.

...并根据您的数据库数据和相关凭据（也适用于 MySQL、MariaDB 或任何其他）对其进行调整。

/// tip

如果您想使用不同的数据库，这是就是您必须修改的地方。

///

### 创建 SQLAlchemy 引擎

第一步，创建一个 SQLAlchemy的“引擎”。

我们稍后会将这个`engine`在其他地方使用。

```Python hl_lines="8-10"
{!../../docs_src/sql_databases/sql_app/database.py!}
```

#### 注意

参数:

```Python
connect_args={"check_same_thread": False}
```

...仅用于`SQLite`，在其他数据库不需要它。

/// info | "技术细节"