Tests: fixed hanging of Go tests.

This closes #319 issue on GitHub.

test/unit/applications/lang/go.py

@@ -12,7 +12,8 @@ class TestApplicationGo(TestApplicationProto):
 
         go_app = TestApplicationGo()
         go_app.testdir = unit.testdir
-        if go_app.prepare_env('empty', 'app').returncode == 0:
+        proc = go_app.prepare_env('empty', 'app')
+        if proc and proc.returncode == 0:
             cls.available['modules']['go'] = []
 
         return unit if not complete_check else unit.complete()
@@ -23,6 +24,8 @@ class TestApplicationGo(TestApplicationProto):
 
         env = os.environ.copy()
         env['GOPATH'] = self.pardir + '/go'
+
+        try:
             process = Popen(
                 [
                     'go',
@@ -36,6 +39,9 @@ class TestApplicationGo(TestApplicationProto):
 
             process.communicate()
 
+        except:
+            return None
+
         return process
 
     def load(self, script, name='app'):

test/unit/applications/lang/java.py

@@ -63,9 +63,13 @@ class TestApplicationJava(TestApplicationProto):
             ]
             javac.extend(src)
 
+            try:
                 process = Popen(javac)
                 process.communicate()
 
+            except:
+                self.fail('Cann\'t run javac process.')
+
         self._load_conf(
             {
                 "listeners": {"*:7080": {"pass": "applications/" + script}},