tests: testing library app

By compiling this, we can check if the compilation result is actually
working.

tests/test_libs/main.py

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+import traceback
+from time import sleep
+
+FAILED = []
+SUCCESS = []
+
+
+def test_kivy():
+    import kivy
+    import kivy.event
+    import kivy.core.window
+    import kivy.uix.widget
+
+
+def test_audiostream():
+    from audiostream import get_output
+    from audiostream.sources.wave import SineSource
+    stream = get_output(channels=2, rate=22050, buffersize=128)
+    source = SineSource(stream, 220)
+    source.start()
+    sleep(.5)
+    source.stop()
+
+
+def test_numpy():
+    print("NPY: test import numpy")
+    import numpy as np
+    print("NPY: basic calculation")
+    print(np.ones(10) * np.sin(2))
+    print("NPY: access to random module")
+    print(np.random.mtrand.beta(1, 2))
+    print("NPY: access to fft")
+    print(np.fft.fft(np.exp(2j * np.pi * np.arange(8) / 8)))
+    print("NPY: access to linalg")
+    from numpy import linalg as LA
+    a = np.array([[1., 2.], [3., 4.]])
+    ainv = LA.inv(a)
+    print(np.allclose(np.dot(a, ainv), np.eye(2)))
+
+
+def test_curly():
+    import curly
+
+
+def run_test(f, name):
+    # run a single test
+    print("=> Run", name)
+    try:
+        f()
+        SUCCESS.append(name)
+    except Exception:
+        print("!! Failed", name)
+        traceback.print_exc()
+        FAILED.append(name)
+
+
+def run():
+    # auto find test and run
+    for key in globals():
+        if not key.startswith("test_"):
+            continue
+        print("FOUND", key)
+        func = globals()[key]
+        run_test(func, key)
+    # print summary
+    print("")
+    print("=== [ LIBS SUMMARY ] ===")
+    print("")
+    print("{}/{} tests".format(
+        len(SUCCESS),
+        len(SUCCESS) + len(FAILED)
+    ))
+    print("Success: ", ", ".join(SUCCESS))
+    print("Failed: ", ", ".join(FAILED))
+
+
+if __name__ == "__main__":
+    run()