Testing And Benchmarking in Scilab

Here’s an example that demonstrates testing and benchmarking in Scilab, along with an explanation:

// Function to be tested
function min_val = intMin(a, b)
    if a < b then
        min_val = a;
    else
        min_val = b;
    end
endfunction

// Test function
function test_intMin()
    assert_checkequal(intMin(2, -2), -2);
    assert_checkequal(intMin(0, 1), 0);
    assert_checkequal(intMin(1, 0), 0);
    assert_checkequal(intMin(0, -1), -1);
    assert_checkequal(intMin(-1, 0), -1);
    disp("All tests passed!");
endfunction

// Benchmark function
function benchmark_intMin()
    n = 1000000;
    tic();
    for i = 1:n
        intMin(1, 2);
    end
    elapsed_time = toc();
    disp(sprintf("Benchmark: %d iterations in %.6f seconds", n, elapsed_time));
endfunction

// Run tests
test_intMin();

// Run benchmark
benchmark_intMin();

This Scilab code demonstrates testing and benchmarking concepts similar to the Go example. Let’s break it down:

1. We define the intMin function, which returns the minimum of two integers.

2. The test_intMin function serves as our test suite. It uses assert_checkequal to verify that intMin produces the expected results for various inputs. If all assertions pass, it prints “All tests passed!”.

3. The benchmark_intMin function measures the performance of intMin. It runs the function 1,000,000 times and measures the elapsed time using tic() and toc().

4. At the end, we call both test_intMin() and benchmark_intMin() to run the tests and benchmark.

To run this code:

1. Save it in a file, e.g., intmin_test.sce.
2. Open Scilab and navigate to the directory containing the file.
3. Execute the script by running:

exec('intmin_test.sce', -1)

The output will look something like this:

All tests passed!
Benchmark: 1000000 iterations in 0.069000 seconds

Key differences from the Go example:

1. Scilab doesn’t have a built-in testing framework like Go’s testing package. We create our own simple test function using assertions.
2. Benchmarking in Scilab is done manually using tic() and toc() functions, rather than with a dedicated benchmarking tool.
3. Scilab doesn’t support table-driven tests directly, but you could implement a similar concept using matrices or structures.

While this example doesn’t provide the same level of sophistication as Go’s testing and benchmarking tools, it demonstrates how to implement basic testing and performance measurement in Scilab.