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test_ring_buffer.py
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131 lines (96 loc) · 2.92 KB
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"""
Tests for RingBuffer class
"""
import numpy as np
import pytest
from spokestack.ring_buffer import RingBuffer
def test_ring_buffer():
buffer = RingBuffer([0, 1])
assert buffer.capacity == 0
assert buffer.is_empty
assert buffer.is_full
buffer = RingBuffer([1, 1])
assert buffer.capacity == 1
assert buffer.is_empty
assert not buffer.is_full
buffer = RingBuffer([10, 1])
assert buffer.capacity == 10
assert buffer.is_empty
assert not buffer.is_full
def test_read_write():
buffer = RingBuffer([3, 1])
for i in range(buffer.capacity):
buffer.write(np.ones((1, 1)) * (i + 1))
assert not buffer.is_empty
assert buffer.is_full
# full write
with pytest.raises(IndexError):
buffer.write(np.ones((1, 1)))
for i in range(buffer.capacity):
assert buffer.read() == np.ones((1, 1)) * (i + 1)
assert buffer.is_empty
assert not buffer.is_full
# empty read
with pytest.raises(IndexError):
buffer.read()
def test_rewind():
buffer = RingBuffer([4, 1])
# default
buffer.rewind()
assert not buffer.is_empty
assert buffer.is_full
while not buffer.is_empty:
buffer.read()
# valid
for i in range(buffer.capacity):
buffer.write(np.ones((1, 1)) * (i + 1))
while not buffer.is_empty:
buffer.read()
buffer.rewind()
assert not buffer.is_empty
assert buffer.is_full
for i in range(buffer.capacity):
assert buffer.read() == np.ones((1, 1)) * (i + 1)
assert buffer.is_empty
assert not buffer.is_full
def test_seek():
buffer = RingBuffer([5, 1])
# valid
for i in range(buffer.capacity):
buffer.write(np.ones((1, 1)) * (i + 1))
buffer.seek(1)
for i in range(1, buffer.capacity):
assert buffer.read() == np.ones((1, 1)) * (i + 1)
buffer.rewind()
buffer.seek(buffer.capacity - 1)
for i in range((buffer.capacity - 1), buffer.capacity):
assert buffer.read() == np.ones((1, 1)) * (i + 1)
buffer.seek(-7)
assert buffer.read() == np.ones((1, 1)) * buffer.capacity
def test_reset():
buffer = RingBuffer([4, 1])
buffer.fill(1)
assert not buffer.is_empty
assert buffer.is_full
for i in range(buffer.capacity):
assert buffer.read() == np.ones((1, 1), np.float32)
buffer.reset()
buffer.fill(1)
assert not buffer.is_empty
assert buffer.is_full
for i in range(buffer.capacity - 1):
assert buffer.read() == np.ones((1, 1))
assert buffer.read() == np.ones((1, 1))
def test_read_all():
buffer = RingBuffer([3, 1])
values = []
for i in range(buffer.capacity):
inputs = np.ones((1, 1)) * (i + 1)
buffer.write(inputs)
values.append(inputs)
assert not buffer.is_empty
assert buffer.is_full
all = buffer.read_all()
assert buffer.is_empty
assert not buffer.is_full
assert all.all() == np.array(values).all()