savannahghi / sghi-commons / 8646058490

100%

develop: 100%

push

github

feat(task): add `sghi.task.Task` composition support (#36)

Add support for `sghi.task.Task` instances composition. `Task` instances
can be composed using the `<<` and `>>` operators. See the example
below:

```python
import operator
from functools import partial

from sghi.task import Task, task

add_100: Task[int, int] = task(partial(operator.add, 100))
int_from_str: Task[str, int] = task(int)
int_to_str: Task[int, str] = task(str)
mul_by_10: Task[int, int] = task(partial(operator.mul, 10))

chained: Task[int, str] = add_100 >> mul_by_10 >> int_to_str
composed: Task[str, int] = add_100 << mul_by_10 << int_from_str

assert isinstance(chained, Task)
assert isinstance(composed, Task)

assert chained(50) == "1500"
assert composed("50") == 600
```

299 of 299 branches covered (100.0%)

Branch coverage included in aggregate %.

20 of 20 new or added lines in 1 file covered. (100.0%)

757 of 757 relevant lines covered (100.0%)

1.0 hits per line