Restore removed tests

Author: szegedi

packages/dd-trace/test/crashtracking/crashtracker.spec.js

@@ -55,6 +55,21 @@ describeNotWindows('crashtracker', () => {
       sinon.assert.notCalled(log.error)
     })
 
+    it('should initialize the binding only once', () => {
+      crashtracker.start(config)
+      crashtracker.start(config)
+
+      sinon.assert.calledOnce(binding.init)
+    })
+
+    it('should reconfigure when started multiple times', () => {
+      crashtracker.start(config)
+      crashtracker.start(config)
+
+      sinon.assert.called(binding.updateConfig)
+      sinon.assert.called(binding.updateMetadata)
+    })
+
     it('should handle errors', () => {
       crashtracker.start(null)