Package io.vertx.core.buffer

Examples of io.vertx.core.buffer.Buffer

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  }

  @Test
  public void testGetFloat() throws Exception {
    int numFloats = 100;
    Buffer b = Buffer.buffer(numFloats * 4);
    for (int i = 0; i < numFloats; i++) {
      b.setFloat(i * 4, i);
    }

    for (int i = 0; i < numFloats; i++) {
      assertEquals((float) i, b.getFloat(i * 4), 0);
    }
  }
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  }

  @Test
  public void testGetDouble() throws Exception {
    int numDoubles = 100;
    Buffer b = Buffer.buffer(numDoubles * 8);
    for (int i = 0; i < numDoubles; i++) {
      b.setDouble(i * 8, i);
    }

    for (int i = 0; i < numDoubles; i++) {
      assertEquals((double) i, b.getDouble(i * 8), 0);
    }
  }
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  }

  @Test
  public void testGetShort() throws Exception {
    int numShorts = 100;
    Buffer b = Buffer.buffer(numShorts * 2);
    for (short i = 0; i < numShorts; i++) {
      b.setShort(i * 2, i);
    }

    for (short i = 0; i < numShorts; i++) {
      assertEquals(i, b.getShort(i * 2));
    }
  }
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  }

  @Test
  public void testGetString() throws Exception {
    String str = TestUtils.randomAlphaString(100);
    Buffer b = Buffer.buffer(str, "UTF-8"); // encode ascii as UTF-8 so one byte per char
    assertEquals(100, b.length());
    String substr = b.getString(10, 20);
    assertEquals(str.substring(10, 20), substr);
    substr = b.getString(10, 20, "UTF-8");
    assertEquals(str.substring(10, 20), substr);
  }
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  }

  @Test
  public void testGetBytes() throws Exception {
    byte[] bytes = TestUtils.randomByteArray(100);
    Buffer b = Buffer.buffer(bytes);

    assertTrue(TestUtils.byteArraysEqual(bytes, b.getBytes()));
  }
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  }

  @Test
  public void testGetBytes2() throws Exception {
    byte[] bytes = TestUtils.randomByteArray(100);
    Buffer b = Buffer.buffer(bytes);

    byte[] sub = new byte[bytes.length / 2];
    System.arraycopy(bytes, bytes.length / 4, sub, 0, bytes.length / 2);
    assertTrue(TestUtils.byteArraysEqual(sub, b.getBytes(bytes.length / 4, bytes.length / 4 + bytes.length / 2)));
  }
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    testSetShort(Buffer.buffer());
  }

  private void testSetBytesBuffer(Buffer buff) throws Exception {

    Buffer b = TestUtils.randomBuffer(100);
    buff.setBuffer(50, b);
    byte[] b2 = buff.getBytes(50, 150);
    assertEquals(b, Buffer.buffer(b2));

    byte[] b3 = TestUtils.randomByteArray(100);
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  public void testSetBytesWithOffsetAndLen() throws Exception {
    int bytesLen = 100;
    byte[] bytes = TestUtils.randomByteArray(bytesLen);
    int len = bytesLen - 2;

    Buffer b = Buffer.buffer();
    b.setByte(0, (byte) '0');
    b.setBytes(1, bytes, 1, len);
    assertEquals(b.length(), len + 1);
    byte[] copy = new byte[len];
    System.arraycopy(bytes, 1, copy, 0, len);

    assertTrue(TestUtils.byteArraysEqual(copy, b.getBytes(1, b.length())));

    b.setBytes(b.length(), bytes, 1, len);
    assertEquals(b.length(), 2 * len + 1);

    assertNullPointerException(() -> Buffer.buffer(150).setBytes(0, (byte[]) null));
    assertNullPointerException(() -> Buffer.buffer(150).setBytes(0, null, 1, len));
  }
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  @Test
  public void testSetBufferWithOffsetAndLen() throws Exception {
    int bytesLen = 100;
    byte[] bytes = TestUtils.randomByteArray(bytesLen);
    Buffer src = Buffer.buffer(bytes);
    int len = bytesLen - 2;

    Buffer b = Buffer.buffer();
    b.setByte(0, (byte) '0');
    b.setBuffer(1, src, 1, len);
    assertEquals(b.length(), len + 1);
    byte[] copy = new byte[len];
    System.arraycopy(bytes, 1, copy, 0, len);

    assertTrue(TestUtils.byteArraysEqual(copy, b.getBytes(1, b.length())));

    b.setBuffer(b.length(), src, 1, len);
    assertEquals(b.length(), 2 * len + 1);

    assertNullPointerException(() -> b.setBuffer(1, null));
    assertNullPointerException(() -> b.setBuffer(1, null, 0, len));
  }
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  }

  @Test
  public void testToString() throws Exception {
    String str = TestUtils.randomUnicodeString(100);
    Buffer buff = Buffer.buffer(str);
    assertEquals(str, buff.toString());

    //TODO toString with encoding
  }
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