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VhdlTestScript

VhdlTestScript is a test-driven development tool for VHDL.
(This Project is forked from tomykaira/vhdl_doctest)

Dependency

This uses GHDL for compiling and running VHDL. Please download from GHDL Main/Home Page, and install.

Installation

$ git clone git@github.com:tomoasleep/vhdl_test_script.git
$ cd vhdl_test_script
$ rake install

Install GHDL from GHDL Main/Home Page.

Usage

To use VhdlTestScript, you write test benches with ruby like this.

VhdlTestScript.scenario DUT_PATH do |dut|
  # please write your test scenario here

  # Example:
  # 'a' is 'in' port , 'output' is 'out' port.
  # declare port to use test as ':a' or 'dut.a'
  ports :a, :output

  # to use 'in' port 'clk' as clock.
  clock :clk

  # when 'a' is assigned '1' before rising edge,
  # 'output' is expected to be '1' after clock.
  step 1, 1

  step 2, 2

  # '_' means 'don't assign' or 'don't care'.
  step _, 2
  step 1, _

  # you can use 'step' like this
  step a: 1, output: 1
end

this ruby test bench is converted into a VHDL test bench when run vhdltestscript.

Documentation of test scenario syntax is being developed now. Please read example codes in /example to know how to write test scenario.

Issues And Features

If you found a bug (or unexpected movement), let me know. Please attach your vhd and test bench file (as far as possible), and describe your intention precisely.

Any feature request is welcome. I appreciate if it have an example, or a test case.

I am noob about hardware, and VHDL. If you have knowledge about hardware testing, give me advice.

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Write tests with rspec for your changes
  5. Push to the branch (git push origin my-new-feature)
  6. Create new Pull Request

References

Utility functions in a generated test file are from http://www.eda-stds.org/vhdl-200x/vhdl-200x-ft/packages_old/ .