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UsbAssume.java
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180 lines (170 loc) · 6.1 KB
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/*
* Copyright (C) 2013 Klaus Reimer <k@ailis.de>
* See LICENSE.md for licensing information.
*/
package org.usb4java.test;
import static org.junit.Assume.assumeTrue;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.usb4java.LibUsb;
/**
* USB-related assumptions.
*
* @author Klaus Reimer (k@ailis.de)
*/
public class UsbAssume
{
/** If USB tests are to be executed. */
private static Boolean usbTests;
/** If TCK tests are to be executed. */
private static Boolean tckTests;
/**
* Check if USB tests are enabled.
*
* USB tests can be controlled with the system property USB_TESTS. When
* set to true then USB tests are always run, if set to false then they
* are never run. If this property is not set then the command-line tool
* lsusb is called. If this tool returned at least two lines of text then
* USB tests are enabled. In all other cases they are disabled.
*
* @return True if USB tests are enabled, false if not.
*/
public static boolean isUsbTestsEnabled()
{
if (usbTests == null && System.getProperty("USB_TESTS") != null)
usbTests = Boolean.valueOf(System.getProperty("USB_TESTS"));
if (usbTests == null)
{
usbTests = false;
try
{
final Process proc = Runtime.getRuntime().exec("lsusb");
if (proc.waitFor() == 0)
{
InputStream inputStream = proc.getInputStream();
try
{
BufferedReader reader =
new BufferedReader(new InputStreamReader(
inputStream));
try
{
int lines = 0;
while (reader.readLine() != null)
lines++;
usbTests = lines >= 2;
}
finally
{
reader.close();
}
}
finally
{
inputStream.close();
}
}
}
catch (Exception e)
{
// Ignored. USB tests are silently disabled when lsusb could
// not be run.
}
}
return usbTests;
}
/**
* Assume that USB tests are enabled. Call this in the first line of
* tests method or preparation methods when you want to ignore the
* tests when the system is not able to run the tests anyway.
*
* USB tests can be controlled with the system property USB_TESTS. When
* set to true then USB tests are always run, if set to false then they
* are never run. If this property is not set then the command-line tool
* lsusb is called. If this tool returned at least two lines of text then
* USB tests are enabled. In all other cases they are disabled.
*/
public static void assumeUsbTestsEnabled()
{
if (!isUsbTestsEnabled())
{
assumeTrue("This test is ignored when USB_TESTS property is not set",
usbTests);
}
}
/**
* Assume that libusb supports hotplug on the current system.
*/
public static void assumeHotplugAvailable()
{
assumeUsbTestsEnabled();
assumeTrue("This test is ignored because libusb doesn't support " +
"hotplug on this system",
LibUsb.hasCapability(LibUsb.CAP_HAS_HOTPLUG));
}
/**
* Assume that TCK tests are enabled. Call this in the first line of
* tests method or preparation methods when you want to ignore the
* tests when the system is not able to run the TCK tests anyway.
*
* TCK tests can be controlled with the system property TCK_TESTS. When
* set to true then TCK tests are always run, if set to false then they
* are never run. If this property is not set then the command-line tool
* lsusb is called to scan for the TCK hardware. If this tool found the
* TCK hardware then TCK tests are enabled. In all other cases they are
* disabled.
*/
public static void assumeTckTestsEnabled()
{
assumeUsbTestsEnabled();
if (tckTests == null && System.getProperty("TCK_TESTS") != null)
tckTests = Boolean.valueOf(System.getProperty("TCK_TESTS"));
if (tckTests == null)
{
tckTests = false;
try
{
final Process proc = Runtime.getRuntime().exec("lsusb");
if (proc.waitFor() == 0)
{
InputStream inputStream = proc.getInputStream();
try
{
BufferedReader reader =
new BufferedReader(new InputStreamReader(
inputStream));
try
{
String line = reader.readLine();
while (line != null)
{
if (line.contains("0547:1002"))
{
tckTests = true;
break;
}
line = reader.readLine();
}
}
finally
{
reader.close();
}
}
finally
{
inputStream.close();
}
}
}
catch (Exception e)
{
// Ignored. USB tests are silently disabled when lsusb could
// not be run.
}
}
assumeTrue("This test is ignored when TCK_TESTS property is not set",
tckTests);
}
}