def test_left_join_indexer():
a = np.array([1, 2, 3, 4, 5], dtype=np.int64)
b = np.array([2, 2, 3, 4, 4], dtype=np.int64)
result = algos.left_join_indexer_int64(b, a)
expected = np.array([1, 1, 2, 3, 3], dtype=np.int64)
assert(np.array_equal(result, expected))
def test_left_join_indexer():
a = np.array([1, 2, 3, 4, 5], dtype=np.int64)
b = np.array([0, 3, 5, 7, 9], dtype=np.int64)
index, ares, bres = algos.left_join_indexer_int64(a, b)
assert_almost_equal(index, a)
aexp = np.array([0, 1, 2, 3, 4], dtype=np.int64)
bexp = np.array([-1, -1, 1, -1, 2], dtype=np.int64)
assert_almost_equal(ares, aexp)
assert_almost_equal(bres, bexp)
a = np.array([5], dtype=np.int64)
b = np.array([5], dtype=np.int64)
index, ares, bres = algos.left_join_indexer_int64(a, b)
assert_almost_equal(index, [5])
assert_almost_equal(ares, [0])
assert_almost_equal(bres, [0])
def test_left_join_indexer():
a = np.array([1, 2, 3, 4, 5], dtype=np.int64)
b = np.array([0, 3, 5, 7, 9], dtype=np.int64)
index, ares, bres = algos.left_join_indexer_int64(a, b)
assert_almost_equal(index, a)
aexp = np.array([0, 1, 2, 3, 4], dtype=np.int64)
bexp = np.array([-1, -1, 1, -1, 2], dtype=np.int64)
assert_almost_equal(ares, aexp)
assert_almost_equal(bres, bexp)
a = np.array([5], dtype=np.int64)
b = np.array([5], dtype=np.int64)
index, ares, bres = algos.left_join_indexer_int64(a, b)
assert_almost_equal(index, [5])
assert_almost_equal(ares, [0])
assert_almost_equal(bres, [0])
def test_left_join_indexer2():
idx = Index([1,1,2,5])
idx2 = Index([1,2,5,7,9])
res, lidx, ridx = algos.left_join_indexer_int64(idx2, idx)
exp_res = np.array([1, 1, 2, 5, 7, 9], dtype=np.int64)
assert_almost_equal(res, exp_res)
exp_lidx = np.array([0, 0, 1, 2, 3, 4], dtype=np.int64)
assert_almost_equal(lidx, exp_lidx)
exp_ridx = np.array([0, 1, 2, 3, -1, -1], dtype=np.int64)
assert_almost_equal(ridx, exp_ridx)
def test_left_join_indexer2():
idx = Index([1, 1, 2, 5])
idx2 = Index([1, 2, 5, 7, 9])
res, lidx, ridx = algos.left_join_indexer_int64(idx2, idx)
exp_res = np.array([1, 1, 2, 5, 7, 9], dtype=np.int64)
assert_almost_equal(res, exp_res)
exp_lidx = np.array([0, 0, 1, 2, 3, 4], dtype=np.int64)
assert_almost_equal(lidx, exp_lidx)
exp_ridx = np.array([0, 1, 2, 3, -1, -1], dtype=np.int64)
assert_almost_equal(ridx, exp_ridx)
