fix(test): get the tests passing again (#65)

package.json

@@ -56,7 +56,7 @@
   },
   "devDependencies": {
     "@types/argparse": "^1.0.33",
-    "@types/mock-fs": "^3.6.30",
+    "@types/make-dir": "^1.0.3",
     "@types/nock": "^9.1.3",
     "@types/node": "^10.0.1",
     "@types/npm-package-arg": "^6.0.0",
@@ -66,13 +66,16 @@
     "@types/spdx-correct": "^2.0.0",
     "@types/spdx-satisfies": "^0.1.0",
     "@types/strip-json-comments": "0.0.30",
+    "@types/tmp": "0.0.33",
     "ava": "^1.0.0",
     "codecov": "^3.0.1",
     "gts": "^0.9.0",
+    "make-dir": "^1.3.0",
     "mock-fs": "^4.4.2",
     "nock": "^10.0.0",
     "nyc": "^13.0.0",
     "proxyquire": "^2.0.1",
+    "tmp": "0.0.33",
     "typescript": "~3.2.0"
   }
 }

ts/src/checker.ts

@@ -68,6 +68,10 @@ export interface CheckError {
   parentPackages: string[];
 }
 
+export interface DefaultHandlerOptions {
+  setExitCode?: boolean;
+}
+
 type EventType = 'non-green-license'|'package.json'|'end'|'error';
 
 export class LicenseChecker extends EventEmitter {
@@ -352,7 +356,7 @@ export class LicenseChecker extends EventEmitter {
   }
 
   /** set default event handlers for CLI output. */
-  setDefaultHandlers(): void {
+  setDefaultHandlers(options: DefaultHandlerOptions = {}): void {
     let nonGreenCount = 0;
     let errorCount = 0;
     this.on('non-green-license',
@@ -383,7 +387,9 @@ export class LicenseChecker extends EventEmitter {
             })
         .on('end', () => {
           if (nonGreenCount > 0 || errorCount > 0) {
-            process.exitCode = 1;
+            if (options.setExitCode) {
+              process.exitCode = 1;
+            }
             if (nonGreenCount > 0) {
               console.log(`${nonGreenCount} non-green licenses found.`);
             }