Bug 1854749 [wpt PR 42116] - Set original error as context when raising a different error, a=testonly

Automatic update from web-platform-tests
Set original error as context when raising a different error

--

wpt-commits: 5f0fba3215492e89b9021bf3bfb9dac63e8fd7c9
wpt-pr: 42116

testing/web-platform/tests/tools/wptrunner/wptrunner/browsers/base.py

@@ -342,7 +342,7 @@ class WebDriverBrowser(Browser):
         except OSError as e:
             if e.errno == errno.ENOENT:
                 raise OSError(
-                    "WebDriver executable not found: %s" % self.webdriver_binary)
+                    "WebDriver executable not found: %s" % self.webdriver_binary) from e
             raise
         self._output_handler.after_process_start(self._proc.pid)
 

testing/web-platform/tests/tools/wptrunner/wptrunner/executors/base.py

@@ -733,8 +733,8 @@ class CallbackHandler:
         self.logger.debug("Got async callback: %s" % result[1])
         try:
             callback = self.callbacks[command]
-        except KeyError:
-            raise ValueError("Unknown callback type %r" % result[1])
+        except KeyError as e:
+            raise ValueError("Unknown callback type %r" % result[1]) from e
         return callback(url, payload)
 
     def process_complete(self, url, payload):
@@ -747,8 +747,8 @@ class CallbackHandler:
         self.logger.debug(f"Got action: {action}")
         try:
             action_handler = self.actions[action]
-        except KeyError:
-            raise ValueError(f"Unknown action {action}")
+        except KeyError as e:
+            raise ValueError(f"Unknown action {action}") from e
         try:
             with ActionContext(self.logger, self.protocol, payload.get("context")):
                 result = action_handler(payload)

testing/web-platform/tests/tools/wptrunner/wptrunner/executors/executorcontentshell.py

@@ -33,8 +33,8 @@ def _read_line(io_queue, deadline=None, encoding=None, errors="strict", raise_cr
             raise CrashError()
         if raise_crash_leak and line.startswith(b"#LEAK"):
             raise LeakError()
-    except Empty:
-        raise TimeoutError()
+    except Empty as e:
+        raise TimeoutError() from e
 
     return line.decode(encoding, errors) if encoding else line
 

testing/web-platform/tests/tools/wptrunner/wptrunner/executors/executormarionette.py

@@ -626,8 +626,8 @@ class MarionetteSetPermissionProtocolPart(SetPermissionProtocolPart):
         }
         try:
             self.marionette._send_message("WebDriver:SetPermission", body)
-        except errors.UnsupportedOperationException:
-            raise NotImplementedError("set_permission not yet implemented")
+        except errors.UnsupportedOperationException as e:
+            raise NotImplementedError("set_permission not yet implemented") from e
 
 
 class MarionettePrintProtocolPart(PrintProtocolPart):

testing/web-platform/tests/tools/wptrunner/wptrunner/executors/executorwktr.py

@@ -27,9 +27,9 @@ def _read_line(io_queue, deadline=None, encoding=None, errors="strict", raise_cr
         line = io_queue.get(True, deadline - current_time if deadline else None)
         if raise_crash and line.startswith(b"#CRASHED"):
             raise CrashError()
-    except Empty:
+    except Empty as e:
         logger.debug(f"got empty line with {time() - deadline} remaining")
-        raise TimeoutError()
+        raise TimeoutError() from e
 
     return line.decode(encoding, errors) if encoding else line
 

testing/web-platform/tests/tools/wptrunner/wptrunner/update/state.py

@@ -63,8 +63,8 @@ class BaseState:
             raise AttributeError
         try:
             return self._data[self._index][key]
-        except KeyError:
-            raise AttributeError
+        except KeyError as e:
+            raise AttributeError from e
 
     def __contains__(self, key):
         return key in self._data[self._index]