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#!/usr/bin/env python
import unittest
from argaze import DataStructures
class TestTimeStampedBufferClass(unittest.TestCase):
"""Test TimeStampedBuffer class."""
def test_new(self):
"""Test TimeStampedBuffer creation."""
# Check TimeStampedBuffer length after creation
self.assertEqual(len(DataStructures.TimeStampedBuffer()), 0)
self.assertEqual(len(DataStructures.TimeStampedBuffer({0: ""})), 1)
self.assertEqual(len(DataStructures.TimeStampedBuffer({0.1: ""})), 1)
self.assertEqual(len(DataStructures.TimeStampedBuffer({0: "A", 1: "B"})), 2)
# Check TimeStampedBuffer keys after creation
self.assertEqual(list(DataStructures.TimeStampedBuffer().keys()), [])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0: ""}).keys()), [0])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0.1: ""}).keys()), [0.1])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0: "A", 1: "B"}).keys()), [0, 1])
# Check TimeStampedBuffer items after creation
self.assertEqual(list(DataStructures.TimeStampedBuffer().items()), [])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0: ""}).items()), [(0, "")])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0.1: ""}).items()), [(0.1, "")])
self.assertEqual(list(DataStructures.TimeStampedBuffer({0: "A", 1: "B"}).items()), [(0, "A"), (1, "B")])
# Check that TimeStampedBuffer creation fails when keys are not numbers
with self.assertRaises(AssertionError):
DataStructures.TimeStampedBuffer({"first": ""})
def test_str(self):
"""Test TimeStampedBuffer string representation."""
self.assertEqual(str(DataStructures.TimeStampedBuffer()), "{}")
self.assertEqual(str(DataStructures.TimeStampedBuffer({0: ""})), "{\"0\": \"\"}")
self.assertEqual(str(DataStructures.TimeStampedBuffer({0.1: ""})), "{\"0.1\": \"\"}")
def test_append(self):
"""Test TimeStampedBuffer append method."""
ts_buffer = DataStructures.TimeStampedBuffer({0: "A", 1: "B"})
ts_buffer_next = DataStructures.TimeStampedBuffer({2: "C", 3: "D"})
self.assertEqual(len(ts_buffer.append(ts_buffer_next)), 4)
self.assertEqual(list(ts_buffer.append(ts_buffer_next).keys()), [0, 1, 2, 3])
if __name__ == '__main__':
unittest.main()
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