Running OUnit tests using dune

I'm having difficulties running oUnit tests, mostly because I'm new to both dune and OUnit. dune complains when I run dune runtest:

File "test/dune", line 4, characters 13-14:
Error: Library "f" not found.
Hint: try: dune external-lib-deps --missing @runtest

Here's the project structure:

├── dune
├── f.ml # This is the source file.
└── test
 ├── dune
 └── f_test.ml # This is the test.

This is dune:

(executable
 (name f))

This is test/dune:

(test
 (name f_test)
 (libraries oUnit f)) ; <- `f` here causes problems.

I can see that the error appears because dune does not know about f.ml, and hence does not know about f in the dune file.

Question is: How can I make dune compile f.ml in such a way that test/dune knows about the f library that I use in test/f_test.ml? How can I run the unit tests properly?

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

add a comment |

I'm having difficulties running oUnit tests, mostly because I'm new to both dune and OUnit. dune complains when I run dune runtest:

File "test/dune", line 4, characters 13-14:
Error: Library "f" not found.
Hint: try: dune external-lib-deps --missing @runtest

Here's the project structure:

├── dune
├── f.ml # This is the source file.
└── test
 ├── dune
 └── f_test.ml # This is the test.

This is dune:

(executable
 (name f))

This is test/dune:

(test
 (name f_test)
 (libraries oUnit f)) ; <- `f` here causes problems.

I can see that the error appears because dune does not know about f.ml, and hence does not know about f in the dune file.

Question is: How can I make dune compile f.ml in such a way that test/dune knows about the f library that I use in test/f_test.ml? How can I run the unit tests properly?

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

add a comment |

I'm having difficulties running oUnit tests, mostly because I'm new to both dune and OUnit. dune complains when I run dune runtest:

File "test/dune", line 4, characters 13-14:
Error: Library "f" not found.
Hint: try: dune external-lib-deps --missing @runtest

Here's the project structure:

├── dune
├── f.ml # This is the source file.
└── test
 ├── dune
 └── f_test.ml # This is the test.

This is dune:

(executable
 (name f))

This is test/dune:

(test
 (name f_test)
 (libraries oUnit f)) ; <- `f` here causes problems.

I can see that the error appears because dune does not know about f.ml, and hence does not know about f in the dune file.

Question is: How can I make dune compile f.ml in such a way that test/dune knows about the f library that I use in test/f_test.ml? How can I run the unit tests properly?

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

I'm having difficulties running oUnit tests, mostly because I'm new to both dune and OUnit. dune complains when I run dune runtest:

File "test/dune", line 4, characters 13-14:
Error: Library "f" not found.
Hint: try: dune external-lib-deps --missing @runtest

Here's the project structure:

├── dune
├── f.ml # This is the source file.
└── test
 ├── dune
 └── f_test.ml # This is the test.

This is dune:

(executable
 (name f))

This is test/dune:

(test
 (name f_test)
 (libraries oUnit f)) ; <- `f` here causes problems.

I can see that the error appears because dune does not know about f.ml, and hence does not know about f in the dune file.

Question is: How can I make dune compile f.ml in such a way that test/dune knows about the f library that I use in test/f_test.ml? How can I run the unit tests properly?

ocaml ounit ocaml-dune

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

edited Nov 15 '18 at 12:49

asked Nov 15 '18 at 10:34

Flux

1,1371832

asked Nov 15 '18 at 10:34

Flux

1,1371832

asked Nov 15 '18 at 10:34

Flux

1,1371832

add a comment |

1 Answer
1

active

oldest

votes

One possibility is to split f into a private library and an executable, and then test the split library.

EDIT:

For instance, the project structure could be updated to

├── dune
├── f.ml # f only contains the I/O glue code.
├── lib
| ├── dune
| └── a.ml # a implements the features that need to be tested.
└── test
 ├── dune
 └── test.ml # This is the test.

with dune

 (executable (name main) (libraries Lib))

For the test, test/dune:

(test (name test) (libraries Lib oUnit))

and finally lib/dune

(library (name Lib))

With this setup, the test can be run with dune runtest.

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

add a comment |

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1 Answer
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active

oldest

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1 Answer
1

active

oldest

votes

One possibility is to split f into a private library and an executable, and then test the split library.

EDIT:

For instance, the project structure could be updated to

├── dune
├── f.ml # f only contains the I/O glue code.
├── lib
| ├── dune
| └── a.ml # a implements the features that need to be tested.
└── test
 ├── dune
 └── test.ml # This is the test.

with dune

 (executable (name main) (libraries Lib))

For the test, test/dune:

(test (name test) (libraries Lib oUnit))

and finally lib/dune

(library (name Lib))

With this setup, the test can be run with dune runtest.

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

add a comment |

One possibility is to split f into a private library and an executable, and then test the split library.

EDIT:

For instance, the project structure could be updated to

├── dune
├── f.ml # f only contains the I/O glue code.
├── lib
| ├── dune
| └── a.ml # a implements the features that need to be tested.
└── test
 ├── dune
 └── test.ml # This is the test.

with dune

 (executable (name main) (libraries Lib))

For the test, test/dune:

(test (name test) (libraries Lib oUnit))

and finally lib/dune

(library (name Lib))

With this setup, the test can be run with dune runtest.

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

add a comment |

One possibility is to split f into a private library and an executable, and then test the split library.

EDIT:

For instance, the project structure could be updated to

├── dune
├── f.ml # f only contains the I/O glue code.
├── lib
| ├── dune
| └── a.ml # a implements the features that need to be tested.
└── test
 ├── dune
 └── test.ml # This is the test.

with dune

 (executable (name main) (libraries Lib))

For the test, test/dune:

(test (name test) (libraries Lib oUnit))

and finally lib/dune

(library (name Lib))

With this setup, the test can be run with dune runtest.

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

One possibility is to split f into a private library and an executable, and then test the split library.

EDIT:

For instance, the project structure could be updated to

├── dune
├── f.ml # f only contains the I/O glue code.
├── lib
| ├── dune
| └── a.ml # a implements the features that need to be tested.
└── test
 ├── dune
 └── test.ml # This is the test.

with dune

 (executable (name main) (libraries Lib))

For the test, test/dune:

(test (name test) (libraries Lib oUnit))

and finally lib/dune

(library (name Lib))

With this setup, the test can be run with dune runtest.

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

edited Nov 16 '18 at 6:38

answered Nov 15 '18 at 17:48

octachron

5,1431614

answered Nov 15 '18 at 17:48

octachron

5,1431614

answered Nov 15 '18 at 17:48

octachron

5,1431614

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

add a comment |

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

Do you mind providing a short example?

– Flux
Nov 16 '18 at 1:16

add a comment |

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