[test] add buffer test stub

test/test_buffer.py

@@ -0,0 +1,56 @@
+import pytest
+import numpy as np
+
+from usbdaq import RingBuffer
+
+
+def test_init():
+    buff = RingBuffer(1000, 2)
+
+    assert buff.size == 1000
+    assert buff.channel_count == 2
+
+
+def test_hasvalue():
+    buff = RingBuffer(1000, 2)
+
+    assert buff.has_value(0, 0) == False
+    assert buff.has_value(-1, 0) == False
+
+    buff.append(10, 0)
+
+    assert buff.write_index(0) == 1
+    assert buff.write_index(1) == 0
+    assert buff.has_value(0, 0) == True
+    assert buff.has_value(0, 1) == False
+
+    buff.append(10, 1)
+    assert buff.write_index(1) == 1
+    assert buff.has_value(0, 1) == True
+
+    for i in range(1100):
+        buff.append(i, 0)
+        buff.append(i, 1)
+    assert buff.write_index(0) == buff.write_index(1)
+    assert buff.has_value(0, 0) == True
+    assert buff.has_value(0, 1) == True
+    assert buff.has_value(buff.write_index(0), 0) == True
+    assert buff.has_value(buff.write_index(1), 1) == True
+
+
+def test_validrange():
+    pass
+
+
+def test_write():
+    buff = RingBuffer(1000, 2)
+
+    samplecount = 1000
+
+
+def test_get():
+    pass
+
+
+def test_read():
+    pass