context('cosine.similarity');
test_that('Parallel vectors return 1', {
expect_equal(
cosine.similarity(1, 1),
1
);
expect_equal(
cosine.similarity(1, 10),
1
);
expect_equal(
cosine.similarity(c(1, 2), c(2, 4)),
1
);
});
test_that('Perpendicular vectors return 0', {
expect_equal(
cosine.similarity(c(1, 0), c(0, 1)),
0
);
});
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