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RSpec

Shell can be tested with Ruby's RSpec library which runs the solution shell script as a subprocess. The run_shell(args: [], output: true) function is provided to facilitate this. Calling run_shell(2, 3, 4) effectively runs bash -c $(cat solution.sh) 2 3 4 and returns the script's stdout as a string.

Basic Setup​

Solution​

#!/bin/bash

echo $(($1 + $2))
#!/bin/bash

echo $(($1 + $2))

Tests​

def add(a, b)
  # run the solution script and return stdout as a string
  run_shell args: [a, b] 
end

describe "add" do
  it "should add two numbers" do
    expect(add(1, 2)).to eq("3")
  end
end
def add(a, b)
  # run the solution script and return stdout as a string
  run_shell args: [a, b] 
end

describe "add" do
  it "should add two numbers" do
    expect(add(1, 2)).to eq("3")
  end
end