sparrowwallet/usb4java
sparrowwallet/usb4java
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Run USB unit tests also when lsusb command line tool can be executed and

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returns at least two devices
This commit is contained in:
Klaus Reimer 2013-04-16 19:13:16 +02:00
parent aefbdab72d
commit d23233d53b
1 changed files with 45 additions and 2 deletions
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47
src/test/java/de/ailis/usb4java/UsbAssume.java
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@ -7,6 +7,10 @@ package de.ailis.usb4java;
import static org.junit.Assume.assumeTrue;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* USB-related assumptions.
*
@ -14,14 +18,53 @@ import static org.junit.Assume.assumeTrue;
*/
public class UsbAssume
{
/** If USB tests are to be executed. */
private static Boolean 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 property USB_TESTS is not set.
* 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 (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));
int lines = 0;
while (reader.readLine() != null) lines++;
usbTests = lines >= 2;
}
finally
{
inputStream.close();
}
}
}
catch (Exception e)
{
// Ignored. USB tests are silently disabled when lsusb could
// not be run.
}
}
assumeTrue("This test is ignored when USB_TESTS property is not set",
System.getProperty("USB_TESTS") != null);
usbTests);
}
}