Version 10 (modified by benl, 5 years ago)



Regression Testing

The war2 test driver automates regression testing.

$ bin/war2 test

This tool descends into the given directory, and runs any tests it finds.

  • For subdirectories containing a Main.ds file, it builds and executes that program. The resulting binary is named Main.bin and placed in the same directory as the source. If there is also a Main.stdout file, then checks the program's output against this expected output. If there is any difference it prompts the user whether to stop testing, or update the expected output.
  • For subdirectories that do not contain a Main.ds, it simply compiles all the source files there.
  • If a subdirectory contains a Module.error.check file, where Module is some arbitrary module name, then compilation is expected to fail with the error message given by that check file.

Regression tests are entirely text based, non-interactive, and should complete within a few seconds.

Regression tests require the base libraries to be built. So before running them you may need to do a:

$ bin/ddc -O -make library/Prelude.ds


Bigger programs are located in the demo directory. These programs may open X windows, access the network, or take longer to complete. They're primarily for demonstrating coolness, but are also useful for testing compiler changes. The war2 test driver can also be used to run them

$ bin/war2 demo

You can also compile and run demos individually with something like:

$ bin/ddc -O -make demo/Graphics/Styrene/Main.ds -o styrene
$ ./styrene

Note that DDC's -make flag will rebuild any module needed by the program being compiled, including modules in the base libraries. This can be useful when working on the libraries, or DDC's -make support.

For example, we can clean out all the binaries in the library, test and demo directories with:

$ make cleanWar

We can then rebuild the whole styrene program with:

$ bin/ddc -O -make demo/Graphics/Styrene/Main.ds -o styrene