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from test import TestCase
import struct
import math
class VEMB(TestCase):
def getname(self):
return "VEMB Command"
def test(self):
dim = 4
# Add same vector in both formats
vec = [1, 0, 0, 0]
norm = math.sqrt(sum(x*x for x in vec))
vec = [x/norm for x in vec] # Normalize the vector
# Add using FP32
vec_bytes = struct.pack(f'{dim}f', *vec)
self.redis.execute_command('VADD', self.test_key, 'FP32', vec_bytes, f'{self.test_key}:item:1')
# Add using VALUES
self.redis.execute_command('VADD', self.test_key, 'VALUES', dim,
*[str(x) for x in vec], f'{self.test_key}:item:2')
# Get both back with VEMB
result1 = self.redis.execute_command('VEMB', self.test_key, f'{self.test_key}:item:1')
result2 = self.redis.execute_command('VEMB', self.test_key, f'{self.test_key}:item:2')
retrieved_vec1 = [float(x) for x in result1]
retrieved_vec2 = [float(x) for x in result2]
# Compare both vectors with original (allow for small quantization errors)
for i in range(dim):
assert abs(vec[i] - retrieved_vec1[i]) < 0.01, \
f"FP32 vector component {i} mismatch: expected {vec[i]}, got {retrieved_vec1[i]}"
assert abs(vec[i] - retrieved_vec2[i]) < 0.01, \
f"VALUES vector component {i} mismatch: expected {vec[i]}, got {retrieved_vec2[i]}"
# Test non-existent item
result = self.redis.execute_command('VEMB', self.test_key, 'nonexistent')
assert result is None, "Non-existent item should return nil"