Initial release 1.0.0HEADv1.0.0master

2 files changed, 140 insertions, 0 deletions

diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/__init__.py
diff --git a/tests/test_cli.py b/tests/test_cli.py
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--- /dev/null
+++ b/tests/test_cli.py
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+# Copyright (C) 2023  Tomasz Kramkowski <tomasz@kramkow.ski>
+# SPDX-License-Identifier: MIT
+import unittest
+from collections.abc import Iterator
+from contextlib import contextmanager
+from tempfile import TemporaryDirectory
+
+from brightness import main
+
+
+class TempSysfs:
+    def __init__(self, path: str) -> None:
+        self.path = path
+
+    def read(self, name) -> str:
+        with open(self.path + "/" + name) as f:
+            return f.read()
+
+    @property
+    def brightness(self) -> int:
+        return int(self.read("brightness").rstrip())
+
+    def max_brightness(self) -> int:
+        return int(self.read("max_brightness").rstrip())
+
+
+@contextmanager
+def fake_sysfs(brightness: int, max_brightness: int) -> Iterator[TempSysfs]:
+    with TemporaryDirectory() as d:
+        with open(d + "/brightness", "w") as f:
+            f.write(str(brightness) + "\n")
+        with open(d + "/max_brightness", "w") as f:
+            f.write(str(max_brightness) + "\n")
+        yield TempSysfs(d)
+
+
+class TestCLI(unittest.TestCase):
+    def test_increment_10(self):
+        with fake_sysfs(brightness=70, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "+10"])
+            self.assertGreater(sysfs.brightness, 70)
+            self.assertLessEqual(sysfs.brightness, 255)
+
+    def test_decrement_10(self):
+        with fake_sysfs(brightness=70, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "-10"])
+            self.assertGreaterEqual(sysfs.brightness, 0)
+            self.assertLess(sysfs.brightness, 70)
+
+    def test_increase_small(self):
+        with fake_sysfs(brightness=0, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "+1"])
+            self.assertEqual(sysfs.brightness, 1)
+
+    def test_decrease_small(self):
+        with fake_sysfs(brightness=1, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "-1"])
+            self.assertEqual(sysfs.brightness, 0)
+
+    def test_increase_zero(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "+0"])
+            self.assertEqual(sysfs.brightness, 127)
+
+    def test_decrease_zero(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "-0"])
+            self.assertEqual(sysfs.brightness, 127)
+
+    def test_double(self):
+        with fake_sysfs(brightness=15, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "+" + str(1 / 8 * 100)])
+            self.assertEqual(sysfs.brightness, 31)
+
+    def test_halve(self):
+        with fake_sysfs(brightness=15, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, str(-(1 / 8 * 100))])
+            self.assertEqual(sysfs.brightness, 7)
+
+    def test_clamp_low(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "-100"])
+            self.assertEqual(sysfs.brightness, 0)
+
+    def test_clamp_high(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "+100"])
+            self.assertEqual(sysfs.brightness, 255)
+
+    def test_absolute(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 0)
+            main(["brightness", sysfs.path, "12.5"])
+            self.assertEqual(sysfs.brightness, 1)
+            main(["brightness", sysfs.path, "25.0"])
+            self.assertEqual(sysfs.brightness, 3)
+            main(["brightness", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 255)
+
+    def test_min_value(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", "--min", "0", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 0)
+            main(["brightness", "--min", "10", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 10)
+            main(["brightness", "--min", "0%", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 0)
+            main(["brightness", "--min", "12.5%", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 1)
+
+    def test_max_value(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", "--max", "255", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 255)
+            main(["brightness", "--max", "245", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 245)
+            main(["brightness", "--max", "100%", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 255)
+            main(["brightness", "--max", "87.5%", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 127)
+
+    def test_min_max(self):
+        with fake_sysfs(brightness=127, max_brightness=255) as sysfs:
+            main(["brightness", "--min", "0", "--max", "255", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 0)
+            main(["brightness", "--min", "0", "--max", "255", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 255)
+            main(["brightness", "--min", "10", "--max", "245", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 10)
+            main(["brightness", "--min", "10", "--max", "245", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 245)
+            main(["brightness", "--min", "0%", "--max", "100%", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 0)
+            main(["brightness", "--min", "0%", "--max", "100%", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 255)
+            main(["brightness", "--min", "12.5%", "--max", "87.5%", sysfs.path, "0"])
+            self.assertEqual(sysfs.brightness, 1)
+            main(["brightness", "--min", "12.5%", "--max", "87.5%", sysfs.path, "100"])
+            self.assertEqual(sysfs.brightness, 127)