fix(test): cover registering metrics, utils

tests/test_registry.py

@@ -0,0 +1,11 @@
+import prometheus_express.metric as pm
+import prometheus_express.registry as pr
+import unittest
+
+class RegistryTest(unittest.TestCase):
+  def test_register(self):
+    m = pm.Metric('foo', 'foo counts')
+    r = pr.CollectorRegistry()
+    r.register(m)
+    r.register(m)
+    self.assertEqual(r.metrics, set([m]))

tests/test_utils.py

@@ -0,0 +1,60 @@
+import prometheus_express.utils as pu
+import unittest
+
+class MockI2C(object):
+  def __init__(self, locked=False, devices=[]):
+    self.devices = devices
+    self.locked = locked
+
+  def try_lock(self):
+    if self.locked:
+      return False
+    else:
+      self.locked = True
+      return True
+
+  def scan(self):
+    return self.devices
+
+  def unlock(self):
+    self.locked = False
+
+class MockNetwork(object):
+  def __init__(self, connected=False, ip='0.0.0.0'):
+    self.connected = connected
+    self.ip = ip
+
+  def ifconfig(self):
+    return [self.ip]
+
+class CheckNetworkTest(unittest.TestCase):
+  def test_unconnected(self):
+    self.assertEqual(
+      pu.check_network(MockNetwork()),
+      False,
+    )
+
+  def test_connected_nullip(self):
+    self.assertEqual(
+      pu.check_network(MockNetwork(connected=True)),
+      False,
+    )
+
+  def test_connected_withip(self):
+    self.assertEqual(
+      pu.check_network(MockNetwork(connected=True, ip='1.1.1.1')),
+      True,
+    )
+
+class ScanI2CBusTest(unittest.TestCase):
+  def test_unlocked(self):
+    self.assertEqual(
+      pu.scan_i2c_bus(MockI2C()),
+      True,
+    )
+
+  def test_locked(self):
+    self.assertEqual(
+      pu.scan_i2c_bus(MockI2C(locked=True)),
+      False,
+    )