Commit e21973dd20862eb2f68335de131463038d7aacc8
compile edits of a post
Kieran committed on 5/22/2018, 12:37:07 AMParent: 1914c3d4f82b0ae0cfd2f8087d24bde52803668c
Files changed
| 3_compileSequentialEdits.test.js | added |
| 3_compileSequentialEdits.test.js | ||
|---|---|---|
| @@ -1,0 +1,61 @@ | ||
| 1 … | +const test = require('tape') | |
| 2 … | +const Server = require('scuttle-testbot') | |
| 3 … | +const pull = require('pull-stream') | |
| 4 … | + | |
| 5 … | +test('edit a post', t => { | |
| 6 … | + var server = Server() | |
| 7 … | + | |
| 8 … | + t.plan(1) | |
| 9 … | + | |
| 10 … | + var content = { | |
| 11 … | + type: "post", | |
| 12 … | + text: "hello wolard!" | |
| 13 … | + } | |
| 14 … | + | |
| 15 … | + var edit = { | |
| 16 … | + type: "post-edit", | |
| 17 … | + text: "hello world!" | |
| 18 … | + // root: ??? - this will be the message id of the first post when we know it | |
| 19 … | + } | |
| 20 … | + | |
| 21 … | + server.publish(content, (err, first) => { | |
| 22 … | + // now we know the key / root id | |
| 23 … | + edit.root = first.key | |
| 24 … | + | |
| 25 … | + server.publish(edit, (err, second) => { | |
| 26 … | + // now we recompile the message using the key of the root | |
| 27 … | + | |
| 28 … | + compilePost(first.key, (err, compiledPost) => { | |
| 29 … | + t.equal(edit.text, compiledPost.compiledText) | |
| 30 … | + | |
| 31 … | + // Make sure you close the server or tests will hang | |
| 32 … | + server.close() | |
| 33 … | + }) | |
| 34 … | + }) | |
| 35 … | + | |
| 36 … | + }) | |
| 37 … | + | |
| 38 … | + function compilePost (key, cb) { | |
| 39 … | + // This implemention is hella naive | |
| 40 … | + // - createFeedStream will stream the ENTIRE database | |
| 41 … | + // - filters are super brittle, recommend json schema | |
| 42 … | + // - assumes arriving in correct order | |
| 43 … | + | |
| 44 … | + pull( | |
| 45 … | + server.createFeedStream(), | |
| 46 … | + pull.filter(msg => { | |
| 47 … | + // its a post and key is the same as the key | |
| 48 … | + // its a post-edit and root is the same as the key | |
| 49 … | + if (msg.value.content.type === "post" && msg.key === key) return true | |
| 50 … | + if (msg.value.content.type === "post-edit" && msg.value.content.root && msg.value.content.root === key) return true | |
| 51 … | + }), | |
| 52 … | + pull.collect((err, msgs) => { | |
| 53 … | + var compiledText = msgs.reduce((state, msg) => { | |
| 54 … | + return msg.value.content.text | |
| 55 … | + }, "") | |
| 56 … | + | |
| 57 … | + cb(null, { compiledText }) | |
| 58 … | + }) | |
| 59 … | + ) | |
| 60 … | + } | |
| 61 … | +}) | |
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