fix: float patch for branch/function coverage merge bug (#56)

see: demurgos/v8-coverage#2

.travis.yml

@@ -1,4 +1,10 @@
 language: node_js
+os:
+  - linux
+  - osx
+  # need to figure out why offsets
+  # are slightly off on Windows.
+  # - windows
 node_js:
-  - "10.10"
-after_success: npm run coverage
+  - "11"
+after_success: npm run coverage

lib/report.js

@@ -4,8 +4,9 @@ const libCoverage = require('istanbul-lib-coverage')
 const libReport = require('istanbul-lib-report')
 const reports = require('istanbul-reports')
 const { readdirSync, readFileSync } = require('fs')
-const { resolve, isAbsolute } = require('path')
-const { mergeProcessCovs } = require('@c88/v8-coverage')
+const { isAbsolute, resolve } = require('path')
+// TODO: switch back to @c88/v8-coverage once patch is landed.
+const { mergeProcessCovs } = require('@bcoe/v8-coverage')
 const v8toIstanbul = require('v8-to-istanbul')
 
 class Report {
@@ -120,7 +121,12 @@ class Report {
     const result = []
     for (const v8ScriptCov of v8ProcessCov.result) {
       if (/^file:\/\//.test(v8ScriptCov.url)) {
-        v8ScriptCov.url = furi.toSysPath(v8ScriptCov.url)
+        try {
+          v8ScriptCov.url = furi.toSysPath(v8ScriptCov.url)
+        } catch (err) {
+          console.warn(err)
+          continue
+        }
       }
       if (this.exclude.shouldInstrument(v8ScriptCov.url) &&
         (!this.omitRelative || isAbsolute(v8ScriptCov.url))) {

package.json

@@ -32,17 +32,17 @@
   "author": "Ben Coe <ben@npmjs.com>",
   "license": "ISC",
   "dependencies": {
-    "@c88/v8-coverage": "^0.1.0",
+    "@bcoe/v8-coverage": "^0.1.0",
     "find-up": "^3.0.0",
     "foreground-child": "^1.5.6",
-    "furi": "^1.0.0",
+    "furi": "^1.3.0",
     "istanbul-lib-coverage": "^2.0.1",
     "istanbul-lib-report": "^2.0.1",
     "istanbul-reports": "^2.0.0",
     "rimraf": "^2.6.2",
     "test-exclude": "^5.0.0",
     "uuid": "^3.3.2",
-    "v8-to-istanbul": "^2.0.0",
+    "v8-to-istanbul": "^2.0.1",
     "yargs": "^12.0.2",
     "yargs-parser": "^10.1.0"
   },

test/integration.js.snap

@@ -8,16 +8,16 @@ second
 --------------------|----------|----------|----------|----------|-------------------|
 File                |  % Stmts | % Branch |  % Funcs |  % Lines | Uncovered Line #s |
 --------------------|----------|----------|----------|----------|-------------------|
-All files           |    94.59 |    70.91 |        0 |    94.59 |                   |
+All files           |     94.4 |    71.43 |       95 |     94.4 |                   |
  bin                |       88 |     62.5 |      100 |       88 |                   |
   c8.js             |       88 |     62.5 |      100 |       88 | 36,40,47,48,49,50 |
- lib                |    95.93 |       60 |      100 |    95.93 |                   |
+ lib                |    95.59 |    61.29 |      100 |    95.59 |                   |
   parse-args.js     |    97.59 |    44.44 |      100 |    97.59 |             59,60 |
-  report.js         |    94.93 |    66.67 |      100 |    94.93 |... 99,100,123,124 |
- test/fixtures      |    95.16 |    94.12 |        0 |    95.16 |                   |
+  report.js         |    94.44 |    68.18 |      100 |    94.44 |... 01,127,128,129 |
+ test/fixtures      |    95.16 |    94.12 |    85.71 |    95.16 |                   |
   async.js          |      100 |      100 |      100 |      100 |                   |
   multiple-spawn.js |      100 |      100 |      100 |      100 |                   |
-  normal.js         |    85.71 |       75 |        0 |    85.71 |          14,15,16 |
+  normal.js         |    85.71 |       75 |       50 |    85.71 |          14,15,16 |
   subprocess.js     |      100 |      100 |      100 |      100 |                   |
 --------------------|----------|----------|----------|----------|-------------------|
 ,"
@@ -35,9 +35,9 @@ hey
 -----------|----------|----------|----------|----------|-------------------|
 File       |  % Stmts | % Branch |  % Funcs |  % Lines | Uncovered Line #s |
 -----------|----------|----------|----------|----------|-------------------|
-All files  |    91.18 |    88.89 |        0 |    91.18 |                   |
+All files  |    91.18 |    88.89 |       80 |    91.18 |                   |
  async.js  |      100 |      100 |      100 |      100 |                   |
- normal.js |    85.71 |       75 |        0 |    85.71 |          14,15,16 |
+ normal.js |    85.71 |       75 |       50 |    85.71 |          14,15,16 |
 -----------|----------|----------|----------|----------|-------------------|
 ,"
 `;