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Merge pull request #852 from cosmos/make-faucet-path-configurable
Make faucet path configurable
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| import { Slip10RawIndex } from "@cosmjs/crypto"; | ||
| import { makeCosmoshubPath } from "@cosmjs/proto-signing"; | ||
|
|
||
| import { makePathBuilder, PathBuilder } from "./pathbuilder"; | ||
|
|
||
| describe("pathbuilder", () => { | ||
| describe("PathBuilder", () => { | ||
| it("is compatible to makeCosmoshubPath", () => { | ||
| const _builder: PathBuilder = makeCosmoshubPath; | ||
| }); | ||
| }); | ||
|
|
||
| describe("makePathBuilder", () => { | ||
| it("works", () => { | ||
| const hub = makePathBuilder("m/44'/118'/0'/0/a"); | ||
| expect(hub(0)).toEqual([ | ||
| Slip10RawIndex.hardened(44), | ||
| Slip10RawIndex.hardened(118), | ||
| Slip10RawIndex.hardened(0), | ||
| Slip10RawIndex.normal(0), | ||
| Slip10RawIndex.normal(0), | ||
| ]); | ||
| expect(hub(25)).toEqual([ | ||
| Slip10RawIndex.hardened(44), | ||
| Slip10RawIndex.hardened(118), | ||
| Slip10RawIndex.hardened(0), | ||
| Slip10RawIndex.normal(0), | ||
| Slip10RawIndex.normal(25), | ||
| ]); | ||
|
|
||
| const stellar = makePathBuilder("m/44'/148'/a'"); | ||
| expect(stellar(0)).toEqual([ | ||
| Slip10RawIndex.hardened(44), | ||
| Slip10RawIndex.hardened(148), | ||
| Slip10RawIndex.hardened(0), | ||
| ]); | ||
| expect(stellar(42)).toEqual([ | ||
| Slip10RawIndex.hardened(44), | ||
| Slip10RawIndex.hardened(148), | ||
| Slip10RawIndex.hardened(42), | ||
| ]); | ||
| }); | ||
|
|
||
| it("throws for invalid patterns", () => { | ||
| // No `a` | ||
| expect(() => makePathBuilder("m/44'/118'/0'/0/30")).toThrowError( | ||
| /Missing account index variable `a` in pattern./i, | ||
| ); | ||
|
|
||
| // Two `a` | ||
| expect(() => makePathBuilder("m/44'/118'/a'/0/a")).toThrowError( | ||
| /More than one account index variable `a` in pattern/i, | ||
| ); | ||
|
|
||
| // Stray character | ||
| expect(() => makePathBuilder("m/44'?/118'/0'/0/a")).toThrowError( | ||
| /Syntax error while reading path component/i, | ||
| ); | ||
|
|
||
| // Missing m/ | ||
| expect(() => makePathBuilder("44'/118'/0'/0/a")).toThrowError(/Path string must start with 'm'/i); | ||
| }); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,26 @@ | ||
| import { HdPath, stringToPath } from "@cosmjs/crypto"; | ||
|
|
||
| export type PathBuilder = (account_index: number) => HdPath; | ||
|
|
||
| /** | ||
| * Insert a BIP32 path that contains a valiable `a` for the numeric account index. | ||
| * This variable will be replaces when the path builder is used. | ||
| * | ||
| * @param pattern, e.g. m/44'/148'/a' for Stellar paths | ||
| */ | ||
| export function makePathBuilder(pattern: string): PathBuilder { | ||
| if (pattern.indexOf("a") === -1) throw new Error("Missing account index variable `a` in pattern."); | ||
| if (pattern.indexOf("a") !== pattern.lastIndexOf("a")) { | ||
| throw new Error("More than one account index variable `a` in pattern."); | ||
| } | ||
|
|
||
| const builder: PathBuilder = function (a: number): HdPath { | ||
| const path = pattern.replace("a", a.toString()); | ||
| return stringToPath(path); | ||
| }; | ||
|
|
||
| // test builder | ||
| const _path = builder(0); | ||
|
|
||
| return builder; | ||
| } |
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