Bastian Köcher
1fb762dac9
The babe `authoring_blocks` test was flaky because it could happen that we imported the first block multiple times. This lead to import the genesis epoch multiples times. `EpochChanges` was assuming that importing a genesis epoch while there was already an imported epoch means that there is a "gap". However, this wasn't true as we just imported 2 genesis epochs. The bug is solved by checking that the already imported epochs are not all genesis epochs.
Substrate · 
Substrate is a next-generation framework for blockchain innovation 🚀.
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Simply go to substrate.dev and follow the installation instructions. You can also try out one of the tutorials.
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Please follow the contributions guidelines as outlined in docs/CONTRIBUTING.adoc. In all communications and contributions, this project follows the Contributor Covenant Code of Conduct.
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License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (
/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.