Bash:
Writing tests
How to:
Bash doesn’t have a built-in testing framework, but you can write simple test functions. For more sophisticated testing, third-party tools like bats-core
are popular.
Basic Test Example in Pure Bash:
function test_example_function {
result=$(your_function 'test_input')
expected_output="expected_output"
if [[ "$result" == "$expected_output" ]]; then
echo "Test passed."
return 0
else
echo "Test failed. Expected '$expected_output', got '$result'"
return 1
fi
}
# Invoking the test function
test_example_function
Sample Output:
Test passed.
Using bats-core
for Testing:
First, install bats-core
. This can usually be done through your package manager or by cloning its repository.
Then, write your tests in separate .bats
files.
# File: example_function.bats
#!/usr/bin/env bats
@test "test example function" {
result="$(your_function 'test_input')"
expected_output="expected_output"
[ "$result" == "$expected_output" ]
}
To run your tests, simply execute the .bats
file:
bats example_function.bats
Sample Output:
✓ test example function
1 test, 0 failures
This approach allows you to easily integrate testing into your development workflow, ensuring the reliability and stability of your Bash scripts.