@Test
public void testComparability1() {
PythonVersion v12 = new PythonVersion(1, 2, "");
PythonVersion v21 = new PythonVersion(2, 1, "");
int z = v12.compareTo(v21);
assertTrue(z < 0);
}
@Test
public void testComparability2() {
PythonVersion v26 = new PythonVersion(2, 6, "");
PythonVersion v27 = new PythonVersion(2, 7, "");
int z = v26.compareTo(v27);
assertTrue(z < 0);
}
@Test
public void testComparability3() {
PythonVersion v331 = new PythonVersion(3, 3, "3.3.1");
PythonVersion v333 = new PythonVersion(3, 3, "3.3.3");
int z = v331.compareTo(v333);
assertTrue(z < 0);
assertFalse(v331.equals(v333));
}
@VisibleForTesting
static PythonVersion extractPythonVersion(Path pythonPath, ProcessExecutor.Result versionResult) {
if (versionResult.getExitCode() == 0) {
String versionString =
CharMatcher.WHITESPACE.trimFrom(
CharMatcher.WHITESPACE.trimFrom(versionResult.getStderr().get())
+ CharMatcher.WHITESPACE
.trimFrom(versionResult.getStdout().get())
.replaceAll("\u001B\\[[;\\d]*m", ""));
Matcher matcher = PYTHON_VERSION_REGEX.matcher(versionString.split("\\r?\\n")[0]);
if (!matcher.matches()) {
throw new HumanReadableException(
"`%s -V` returned an invalid version string %s", pythonPath, versionString);
}
return PythonVersion.of(matcher.group(1));
} else {
throw new HumanReadableException(versionResult.getStderr().get());
}
}
