Merge pull request jest-community#1 from orta/ast-parse

AST Parse for it/test blocks

Author: legend

.vscode/launch.json

@@ -18,7 +18,7 @@
             "type": "extensionHost",
             "request": "launch",
             "runtimeExecutable": "${execPath}",
-            "args": ["--extensionDevelopmentPath=${workspaceRoot}", "--extensionTestsPath=${workspaceRoot}/out/test" ],
+            "args": ["--extensionDevelopmentPath=${workspaceRoot}", "--extensionTestsPath=${workspaceRoot}/out/test"],
             "stopOnEntry": false,
             "sourceMaps": true,
             "outDir": "${workspaceRoot}/out/test",

package.json

@@ -40,13 +40,15 @@
     "postinstall": "node ./node_modules/vscode/bin/install"
   },
   "devDependencies": {
-    "typescript": "^2.0.3",
-    "vscode": "^1.0.0",
-    "mocha": "^2.3.3",
+    "@types/babylon": "^6.7.14",
+    "@types/mocha": "^2.2.32",
     "@types/node": "^6.0.40",
-    "@types/mocha": "^2.2.32"
+    "mocha": "^2.3.3",
+    "typescript": "^2.0.3",
+    "vscode": "^1.0.0"
   },
   "dependencies": {
+    "babylon": "^6.13.0",
     "tmp": "0.0.29"
   }
 }

src/jest_runner.ts

@@ -12,7 +12,7 @@ export class JestRunner extends EventEmitter {
     constructor() {
         super();
 
-        var runtimeArgs = ['.', '--json', '--useStderr', '--watch', '--coverage', 'true ', '--colors', 'false', "--verbose"];
+        var runtimeArgs = ['.', '--json', '--useStderr', '--watch', '--colors', 'false', "--verbose"];
         var runtimeExecutable: string;
 
         runtimeExecutable = "node_modules/.bin/jest"
@@ -49,20 +49,12 @@ export class JestRunner extends EventEmitter {
             this.emit('terminalError', "Process failed: " + error.message);
         });
 
-        this.debugprocess.on('disconnect', () => {
-           console.log("DDD")
-        });
-
-        this.debugprocess.on('message', () => {
-           console.log("MMM")
-        });
-
         this.debugprocess.on('close', () => {
            console.log("Jest Closed")
         });
     }
 
-    // This doens't work...
+    // This doesn't work yet...
     public triggerFullTestSuite() {
         this.debugprocess.stdin.write("o")
     }

src/test_file_parser.ts

@@ -0,0 +1,91 @@
+'use strict'
+
+import fs = require('fs');
+
+import {basename, dirname} from 'path';
+import * as path from 'path';
+
+// var esprima = require('esprima');
+import * as babylon from 'babylon'
+
+interface Location {
+    line: number
+    column: number
+}
+
+export class ItBlock {
+    name: string
+    file: string
+    start: Location
+    end: Location
+
+    updateWithNode(node: any){
+        this.start = node.loc.start
+        this.end = node.loc.end
+        this.name = node.expression.arguments[0].value
+    }
+}
+
+export default class TestFileParser {
+
+    itBlocks: ItBlock[]
+
+    async run(file: string): Promise<any> {
+        let data = await this.generateAST(file)
+        this.itBlocks = []
+        this.findItBlocksInBody(data["program"])
+        return data
+    }
+
+    foundItNode(node){
+        let it = new ItBlock()
+        it.updateWithNode(node)
+        this.itBlocks.push(it)
+    }
+
+    isAnIt(node) {
+        return (
+            node.type === "ExpressionStatement" &&
+            node.expression.type === "CallExpression"
+        ) 
+        &&
+        (
+            node.expression.callee.name === "it" ||
+            node.expression.callee.name === "test"
+        ) 
+    }
+
+     isADescribe(node) {
+        return node.type === "ExpressionStatement" &&
+        node.expression.type === "CallExpression" &&
+        node.expression.callee.name === "describe"
+    }
+
+    findItBlocksInBody(root) {
+        for (var node in root.body) {
+            if (root.body.hasOwnProperty(node)) {
+                var element = root.body[node];
+                if (this.isADescribe(element)){
+                    if (element.expression.arguments.length == 2) {
+                        let newBody = element.expression.arguments[1].body
+                        this.findItBlocksInBody(newBody);
+                    }
+                }
+                if (this.isAnIt(element)) {
+                    this.foundItNode(element)
+                }        
+            }
+        }
+    }
+
+    generateAST(file: string): Promise<babylon.Node> {
+        return new Promise((resolve, reject) =>{
+            var parentDir = path.resolve(process.cwd(), '..');
+
+            fs.readFile(file, "utf8", (err, data) => {
+                if (err) { return reject(err.message) }
+                resolve(babylon.parse(data, { sourceType:"module", plugins: ["jsx", "flow"] }))
+            })  
+        })
+    }
+}

test/fixtures/dangerjs/travis-ci.jstest.js

@@ -0,0 +1,70 @@
+import Travis from "../travis.js"
+
+let correctEnv = {
+  "HAS_JOSH_K_SEAL_OF_APPROVAL": "true",
+  "TRAVIS_PULL_REQUEST": "800",
+  "TRAVIS_REPO_SLUG": "artsy/eigen"
+}
+
+describe(".isCI", () => {
+  test("validates when all Travis environment vars are set and Josh K says so", () => {
+    let travis = new Travis(correctEnv)
+    expect(travis.isCI).toBeTruthy()
+  })
+
+  test("does not validate without josh", () => {
+    let travis = new Travis({})
+    expect(travis.isCI).toBeFalsy()
+  })
+})
+
+describe(".isPR", () => {
+  test("validates when all Travis environment vars are set and Josh K says so", () => {
+    let travis = new Travis(correctEnv)
+    expect(travis.isPR).toBeTruthy()
+  })
+
+  test("does not validate without josh", () => {
+    let travis = new Travis({})
+    expect(travis.isPR).toBeFalsy()
+  })
+
+  let envs = ["TRAVIS_PULL_REQUEST", "TRAVIS_REPO_SLUG"]
+  envs.forEach((key: string) => {
+    var env = {
+      "HAS_JOSH_K_SEAL_OF_APPROVAL": "true",
+      "TRAVIS_PULL_REQUEST": "800",
+      "TRAVIS_REPO_SLUG": "artsy/eigen"
+    }
+    env[key] = null
+
+    test(`does not validate when ${key} is missing`, () => {
+      let travis = new Travis({})
+      expect(travis.isPR).toBeFalsy()
+    })
+  })
+
+  it("needs to have a PR number", () => {
+    var env = {
+      "HAS_JOSH_K_SEAL_OF_APPROVAL": "true",
+      "TRAVIS_PULL_REQUEST": "asdasd",
+      "TRAVIS_REPO_SLUG": "artsy/eigen"
+    }
+    let travis = new Travis(env)
+    expect(travis.isPR).toBeFalsy()
+  })
+})
+
+describe(".pullReuestID", () => {
+  it("pulls it out of the env", () => {
+    let travis = new Travis(correctEnv)
+    expect(travis.pullRequestID).toEqual("800")
+  })
+})
+
+describe(".repoSlug", () => {
+  it("pulls it out of the env", () => {
+    let travis = new Travis(correctEnv)
+    expect(travis.repoSlug).toEqual("artsy/eigen")
+  })
+})

test/fixtures/global_its.js

@@ -0,0 +1,7 @@
+it("works with old functions", function() {
+
+})
+
+it("works with new functions", () => {
+
+})

test/fixtures/nested_its.js

@@ -0,0 +1,11 @@
+describe("some context", () => {
+    it("1", function() {
+    })
+    it("2", function() {
+    })
+})
+
+describe("some other context", function() {
+    it("3", () => {
+    })
+})

test/test_file_parser.test.ts

@@ -0,0 +1,55 @@
+// The module 'assert' provides assertion methods from node
+import * as assert from 'assert';
+
+// You can import and use all API from the 'vscode' module
+// as well as import your extension to test it
+import * as vscode from 'vscode';
+import * as myExtension from '../src/extension';
+
+import Parser from '../src/test_file_parser'
+
+suite("File Parsing", () => {
+
+    test("For the simplest global case", async () => {
+        let parser = new Parser()
+        await parser.run(__dirname + "/../../test/fixtures/global_its.js")
+        assert.equal(parser.itBlocks.length, 2)
+        
+        let firstIt = parser.itBlocks[0]
+        assert.equal(firstIt.name, "works with old functions")
+        assert.notStrictEqual(firstIt.start, { line: 1, column: 0 })
+        assert.notStrictEqual(firstIt.end, { line: 3, column: 0 })
+
+        let secondIt = parser.itBlocks[1]
+        assert.equal(secondIt.name, "works with new functions")
+        assert.notStrictEqual(secondIt.start, { line: 5, column: 0 })
+        assert.notStrictEqual(secondIt.end, { line: 7, column: 0 })
+    });
+
+    test("For its inside describes", async () => {
+        let parser = new Parser()
+        await parser.run(__dirname + "/../../test/fixtures/nested_its.js")
+        assert.equal(parser.itBlocks.length, 3)
+        
+        let firstIt = parser.itBlocks[0]
+        assert.equal(firstIt.name, "1")
+        assert.deepEqual(firstIt.start, { line: 2, column: 4 })
+        assert.deepEqual(firstIt.end, { line: 3, column: 6 })
+
+        let secondIt = parser.itBlocks[1]
+        assert.equal(secondIt.name, "2")
+        assert.deepEqual(secondIt.start, { line: 4, column: 4 })
+        assert.deepEqual(secondIt.end, { line: 5, column: 6 })
+
+        let thirdIt = parser.itBlocks[2]
+        assert.equal(thirdIt.name, "3")
+        assert.deepEqual(thirdIt.start, { line: 9, column: 4 })
+        assert.deepEqual(thirdIt.end, { line: 10, column: 6 })
+    });
+
+    test("For a danger test file (which has flow annotations)", async () => {
+        let parser = new Parser()
+        await parser.run(__dirname + "/../../test/fixtures/dangerjs/travis-ci.jstest.js")
+        assert.equal(parser.itBlocks.length, 7)
+    })
+});