safehasattr: pass attribute name as string instead of bytes
This is a step toward replacing `util.safehasattr` usage with plain `hasattr`.
The builtin function behave poorly in Python2 but this was fixed in Python3.
These change are done one by one as they tend to have a small odd to trigger
puzzling breackage.
// testing.rs
//
// Copyright 2018 Georges Racinet <georges.racinet@octobus.net>
//
// This software may be used and distributed according to the terms of the
// GNU General Public License version 2 or any later version.
use crate::{Graph, GraphError, Revision, NULL_REVISION};
/// A stub `Graph`, same as the one from `test-ancestor.py`
///
/// o 13
/// |
/// | o 12
/// | |
/// | | o 11
/// | | |\
/// | | | | o 10
/// | | | | |
/// | o---+ | 9
/// | | | | |
/// o | | | | 8
/// / / / /
/// | | o | 7
/// | | | |
/// o---+ | 6
/// / / /
/// | | o 5
/// | |/
/// | o 4
/// | |
/// o | 3
/// | |
/// | o 2
/// |/
/// o 1
/// |
/// o 0
#[derive(Clone, Debug)]
pub struct SampleGraph;
impl Graph for SampleGraph {
fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
match rev {
0 => Ok([NULL_REVISION, NULL_REVISION]),
1 => Ok([0, NULL_REVISION]),
2 => Ok([1, NULL_REVISION]),
3 => Ok([1, NULL_REVISION]),
4 => Ok([2, NULL_REVISION]),
5 => Ok([4, NULL_REVISION]),
6 => Ok([4, NULL_REVISION]),
7 => Ok([4, NULL_REVISION]),
8 => Ok([NULL_REVISION, NULL_REVISION]),
9 => Ok([6, 7]),
10 => Ok([5, NULL_REVISION]),
11 => Ok([3, 7]),
12 => Ok([9, NULL_REVISION]),
13 => Ok([8, NULL_REVISION]),
r => Err(GraphError::ParentOutOfRange(r)),
}
}
}
// A Graph represented by a vector whose indices are revisions
// and values are parents of the revisions
pub type VecGraph = Vec<[Revision; 2]>;
impl Graph for VecGraph {
fn parents(&self, rev: Revision) -> Result<[Revision; 2], GraphError> {
Ok(self[rev as usize])
}
}