add c8 for coverage

bazel-contrib · Feb 20, 2019 · 06c819f · 06c819f
1 parent 0a71195
commit 06c819f
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Showing 5 changed files with 746 additions and 12 deletions.
diff --git a/packages/jasmine/BUILD.bazel b/packages/jasmine/BUILD.bazel
@@ -18,6 +18,7 @@ package(default_visibility = ["//visibility:public"])
 
 exports_files([
     "src/jasmine_runner.js",
+    "src/jasmine_runner_host.js",
     # Exported to be consumed for generating skydoc.
     "src/jasmine_node_test.bzl",
 ])

diff --git a/packages/jasmine/package.json b/packages/jasmine/package.json
@@ -4,6 +4,8 @@
     "license": "Apache 2.0",
     "version": "0.0.0-PLACEHOLDER",
     "dependencies": {
+        "c8": "^3.4.0",
+        "foreground-child": "^1.5.6",
         "jasmine": "~3.3.1"
     },
     "bazelWorkspaces": {
@@ -16,4 +18,4 @@
         "build": "bazel run :package.pack --workspace_status_command=../../tools/current_version.sh",
         "test": "bazel test //..."
     }
-}
+}
diff --git a/packages/jasmine/src/jasmine_node_test.bzl b/packages/jasmine/src/jasmine_node_test.bzl
@@ -52,10 +52,11 @@ def jasmine_node_test(
     )
 
     all_data = data + srcs + deps + [jasmine]
+    all_data += ["@npm//c8", "@npm//foreground-child"]
     all_data += [Label("//:src/jasmine_runner.js"), Label("//:src/jasmine_runner_host.js")]
     all_data += [":%s_devmode_srcs.MF" % name]
     all_data += [Label("@bazel_tools//tools/bash/runfiles")]
-    entry_point = "npm_bazel_jasmine/src/jasmine_runner.js"
+    entry_point = "npm_bazel_jasmine/src/jasmine_runner_host.js"
 
     nodejs_test(
         name = name,

diff --git a/packages/jasmine/src/jasmine_runner_host.js b/packages/jasmine/src/jasmine_runner_host.js
@@ -1,13 +1,40 @@
-const { spawnSync } = require('child_process');
-
+var crypto = require('crypto');
+const { join } = require('path');
+const fs = require('fs');
+const cild_process = require('child_process');
+const foreground = require('foreground-child');
+const Report = require('c8/lib/report')
 
 function main(args) {
-  const output = spawnSync(process.execPath, [
-    require.resolve('./jasmine_runner.js'),
-    ...args
-  ], { env: { ...process.env, NODE_V8_COVERAGE: '/tmp/cov'}})
-  assert.strictEqual(output.status, 0);
-  assert.strictEqual(output.stderr.toString(), '');
+  // do this here since this require.resolve fails in the child process
+  const manifestFile = require.resolve(args[0]);
+  const covDir = join(process.env['TEST_TMPDIR'], `${crypto.randomBytes(4).readUInt32LE(0)}`);
+
+  process.env.NODE_V8_COVERAGE = covDir
+  // foreground(require.resolve('./jasmine_runner.js'), () => {
+  //   outputReport(argv)
+  // })  
+
+  const runner = cild_process.fork(require.resolve('./jasmine_runner.js'), [manifestFile]
+  , { env: { ...process.env, NODE_V8_COVERAGE: covDir, }});
+  runner.on('close', (code) => {
+    const covDirFiles = fs.readdirSync(covDir);
+    if(covDirFiles.length === 1) {
+      const report = Report({
+        include: undefined,
+        exclude: undefined,
+        reporter: ['text-summary'],
+        tempDirectory: covDir,
+        watermarks: undefined,
+        resolve: process.cwd(),
+        omitRelative: undefined,
+        wrapperLength: undefined
+      })
+      report.run()
+    }
+    console.log(`child process exited with code ${code}`);
+    process.exit(code);
+   });
 }
 
 if (require.main === module) {