use curent selecting before Unit Testing plugin activation

src/app/tabs/test-tab.js

@@ -62,7 +62,10 @@ module.exports = class TestTab extends ViewPlugin {
       this.updateTestFileList()
     })
 
-    this.fileManager.events.on('currentFileChanged', (file, provider) => {
+    this.fileManager.events.on('currentFileChanged', (file, provider) => this.updateForNewCurrent(file))
+  }
+
+  updateForNewCurrent (file) {
     this.updateGenerateFileAction(file)
     if (!this.areTestsRunning) this.updateRunAction(file)
     this.testTabLogic.getTests((error, tests) => {
@@ -72,7 +75,6 @@ module.exports = class TestTab extends ViewPlugin {
       this.updateTestFileList(tests)
       if (!this.testsOutput || !this.testsSummary) return
     })
-    })
   }
 
   listTests () {
@@ -413,6 +415,7 @@ module.exports = class TestTab extends ViewPlugin {
         </div>
       </div>
     `
+    this.updateForNewCurrent(this.fileManager.currentFile())
     if (!this._view.el) this._view.el = el
     return el
   }