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-rw-r--r--support/testing/infra/emulator.py13
1 files changed, 10 insertions, 3 deletions
diff --git a/support/testing/infra/emulator.py b/support/testing/infra/emulator.py
index 588a92f6a2..802e89d4b4 100644
--- a/support/testing/infra/emulator.py
+++ b/support/testing/infra/emulator.py
@@ -5,10 +5,14 @@ import infra
class Emulator(object):
- def __init__(self, builddir, downloaddir, logtofile):
+ def __init__(self, builddir, downloaddir, logtofile, timeout_multiplier):
self.qemu = None
self.downloaddir = downloaddir
self.logfile = infra.open_log_file(builddir, "run", logtofile)
+ # We use elastic runners on the cloud to runs our tests. Those runners
+ # can take a long time to run the emulator. Use a timeout multiplier
+ # when running the tests to avoid sporadic failures.
+ self.timeout_multiplier = timeout_multiplier
# Start Qemu to boot the system
#
@@ -65,7 +69,8 @@ class Emulator(object):
qemu_cmd += ["-append", " ".join(kernel_cmdline)]
self.logfile.write("> starting qemu with '%s'\n" % " ".join(qemu_cmd))
- self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:], timeout=5,
+ self.qemu = pexpect.spawn(qemu_cmd[0], qemu_cmd[1:],
+ timeout=5 * self.timeout_multiplier,
env={"QEMU_AUDIO_DRV": "none"})
# We want only stdout into the log to avoid double echo
self.qemu.logfile_read = self.logfile
@@ -76,7 +81,7 @@ class Emulator(object):
# The login prompt can take some time to appear when running multiple
# instances in parallel, so set the timeout to a large value
index = self.qemu.expect(["buildroot login:", pexpect.TIMEOUT],
- timeout=60)
+ timeout=60 * self.timeout_multiplier)
if index != 0:
self.logfile.write("==> System does not boot")
raise SystemError("System does not boot")
@@ -94,6 +99,8 @@ class Emulator(object):
# return a tuple (output, exit_code)
def run(self, cmd, timeout=-1):
self.qemu.sendline(cmd)
+ if timeout != -1:
+ timeout *= self.timeout_multiplier
self.qemu.expect("# ", timeout=timeout)
# Remove double carriage return from qemu stdout so str.splitlines()
# works as expected.