Improve test coverage of arrays

[MilesCranmer]

No description provided.

[github-actions]

Benchmark Results

	main	15ffe99...	main / 15ffe99...
Quantity/creation/Quantity(x)	4.02 ± 0.01 ns	4.02 ± 0.01 ns	1
Quantity/creation/Quantity(x, length=y)	3.73 ± 0.01 ns	3.73 ± 0.01 ns	1
Quantity/with_numbers/*real	2.79 ± 0.001 ns	2.79 ± 0.001 ns	1
Quantity/with_numbers/^int	8.37 ± 1.6 ns	8.37 ± 1.6 ns	1
Quantity/with_numbers/^int * real	8.98 ± 1.6 ns	8.99 ± 1.6 ns	0.999
Quantity/with_quantity/+y	4.35 ± 0 ns	4.35 ± 0 ns	1
Quantity/with_quantity//y	3.42 ± 0.011 ns	3.42 ± 0.011 ns	1
Quantity/with_self/dimension	3.11 ± 0.001 ns	3.1 ± 0.01 ns	1
Quantity/with_self/inv	3.11 ± 0.001 ns	3.11 ± 0.001 ns	1
Quantity/with_self/ustrip	3.1 ± 0.01 ns	3.1 ± 0.01 ns	1
QuantityArray/broadcasting/multi_array_of_quantities	0.0878 ± 0.0095 ms	0.0878 ± 0.0011 ms	1
QuantityArray/broadcasting/multi_normal_array	0.0496 ± 0.0024 ms	0.0496 ± 0.0021 ms	1
QuantityArray/broadcasting/multi_quantity_array	0.0591 ± 0.0062 ms	0.053 ± 0.0014 ms	1.11
QuantityArray/broadcasting/x^2_array_of_quantities	14 ± 2.6 μs	14.5 ± 3.3 μs	0.964
QuantityArray/broadcasting/x^2_normal_array	2.58 ± 1.9 μs	2.44 ± 2.3 μs	1.06
QuantityArray/broadcasting/x^2_quantity_array	3.58 ± 0.67 μs	3.58 ± 0.39 μs	1
QuantityArray/broadcasting/x^4_array_of_quantities	0.0815 ± 0.0012 ms	0.0815 ± 0.0072 ms	0.999
QuantityArray/broadcasting/x^4_normal_array	0.0496 ± 0.0025 ms	0.0496 ± 0.00023 ms	1
QuantityArray/broadcasting/x^4_quantity_array	0.0467 ± 0.00097 ms	0.0467 ± 0.00025 ms	1
time_to_load	0.197 ± 0.0016 s	0.199 ± 0.0016 s	0.993

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).