Add tests for battery module

Good news: they're passed before the blob of commits in the
last half hours, and they're still passing...

tests/test_battery.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+import unittest
+
+from i3pystatus import battery
+
+def factory(path, format, expected):
+    def test():
+        bc = battery.BatteryChecker(path=path, format=format)
+        bc.run()
+        print(bc.output["full_text"])
+        assert bc.output["full_text"] == expected
+    test.description = path + ":" + format
+    return test
+
+def basic_test_generator():
+    cases = [
+        ("test_battery_basic1", "FULL", "0.000", ""),
+        ("test_battery_basic2", "FULL", "0.000", ""),
+        ("test_battery_basic3", "DIS", "15.624", "4h:04m"),
+        ("test_battery_basic4", "DIS", "17.510", "1h:46m"),
+        ("test_battery_basic5", "DIS", "11.453", "4h:52m"),
+        ("test_battery_basic6", "CHR", "30.764", "0h:20m"),
+    ]
+    for path, status, consumption, remaining in cases:
+        yield factory(path, "{status}", status)
+        yield factory(path, "{consumption:.3f}", consumption)
+        yield factory(path, "{remaining_hm}", remaining)
+
+
+#suite = unittest.TestLoader().loadTestsFromName(__name__)
+#unittest.TextTestRunner(verbosity=2).run(suite)

tests/test_battery_basic1

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Unknown
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=12514000
+POWER_SUPPLY_POWER_NOW=0
+POWER_SUPPLY_ENERGY_FULL_DESIGN=84240000
+POWER_SUPPLY_ENERGY_FULL=64360000
+POWER_SUPPLY_ENERGY_NOW=64300000
+POWER_SUPPLY_CAPACITY=99
+POWER_SUPPLY_MODEL_NAME=42T4650
+POWER_SUPPLY_MANUFACTURER=Panasonic
+POWER_SUPPLY_SERIAL_NUMBER=  176

tests/test_battery_basic2

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Full
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=12512000
+POWER_SUPPLY_CURRENT_NOW=0
+POWER_SUPPLY_CHARGE_FULL_DESIGN=4698000
+POWER_SUPPLY_CHARGE_FULL=4698000
+POWER_SUPPLY_CHARGE_NOW=4698000
+POWER_SUPPLY_CAPACITY=100
+POWER_SUPPLY_MODEL_NAME=Primary
+POWER_SUPPLY_MANUFACTURER=Hewlett-Packard
+POWER_SUPPLY_SERIAL_NUMBER=61597 2011/02/23

tests/test_battery_basic3

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Discharging
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=12274000
+POWER_SUPPLY_POWER_NOW=15624000
+POWER_SUPPLY_ENERGY_FULL_DESIGN=84240000
+POWER_SUPPLY_ENERGY_FULL=64360000
+POWER_SUPPLY_ENERGY_NOW=63560000
+POWER_SUPPLY_CAPACITY=98
+POWER_SUPPLY_MODEL_NAME=42T4650
+POWER_SUPPLY_MANUFACTURER=Panasonic
+POWER_SUPPLY_SERIAL_NUMBER=  176

tests/test_battery_basic4

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Discharging
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=11512000
+POWER_SUPPLY_CURRENT_NOW=1521000
+POWER_SUPPLY_CHARGE_FULL_DESIGN=4698000
+POWER_SUPPLY_CHARGE_FULL=4698000
+POWER_SUPPLY_CHARGE_NOW=2698000
+POWER_SUPPLY_CAPACITY=100
+POWER_SUPPLY_MODEL_NAME=Primary
+POWER_SUPPLY_MANUFACTURER=Hewlett-Packard
+POWER_SUPPLY_SERIAL_NUMBER=61597 2011/02/23

tests/test_battery_basic5

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Discharging
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=12249000
+POWER_SUPPLY_CURRENT_NOW=935000
+POWER_SUPPLY_CHARGE_FULL_DESIGN=4698000
+POWER_SUPPLY_CHARGE_FULL=4698000
+POWER_SUPPLY_CHARGE_NOW=4560000
+POWER_SUPPLY_CAPACITY=97
+POWER_SUPPLY_MODEL_NAME=Primary
+POWER_SUPPLY_MANUFACTURER=Hewlett-Packard
+POWER_SUPPLY_SERIAL_NUMBER=61597 2011/02/23
+

tests/test_battery_basic6

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+POWER_SUPPLY_NAME=BAT0
+POWER_SUPPLY_STATUS=Charging
+POWER_SUPPLY_PRESENT=1
+POWER_SUPPLY_TECHNOLOGY=Li-ion
+POWER_SUPPLY_CYCLE_COUNT=0
+POWER_SUPPLY_VOLTAGE_MIN_DESIGN=10800000
+POWER_SUPPLY_VOLTAGE_NOW=12390000
+POWER_SUPPLY_POWER_NOW=30764000
+POWER_SUPPLY_ENERGY_FULL_DESIGN=84240000
+POWER_SUPPLY_ENERGY_FULL=64360000
+POWER_SUPPLY_ENERGY_NOW=53810000
+POWER_SUPPLY_CAPACITY=83
+POWER_SUPPLY_MODEL_NAME=42T4650
+POWER_SUPPLY_MANUFACTURER=Panasonic
+POWER_SUPPLY_SERIAL_NUMBER=  176
+