MAGETWO-91628: Bundle product price doubled when switching currency

- Fixed unit tests;

Author: Alexey Yakimovich

app/code/Magento/Bundle/Test/Unit/Model/Product/TypeTest.php

@@ -513,10 +513,6 @@ function ($key) use ($optionCollection, $selectionCollection) {
             ->method('getSelectionId')
             ->willReturn(314);
 
-        $this->priceCurrency->expects($this->once())
-            ->method('convert')
-            ->willReturn(3.14);
-
         $result = $this->model->prepareForCartAdvanced($buyRequest, $product);
         $this->assertEquals([$product, $productType], $result);
     }
@@ -737,10 +733,6 @@ function ($key) use ($optionCollection, $selectionCollection) {
             ->method('prepareForCart')
             ->willReturn([]);
 
-        $this->priceCurrency->expects($this->once())
-            ->method('convert')
-            ->willReturn(3.14);
-
         $result = $this->model->prepareForCartAdvanced($buyRequest, $product);
         $this->assertEquals('We can\'t add this item to your shopping cart right now.', $result);
     }
@@ -961,10 +953,6 @@ function ($key) use ($optionCollection, $selectionCollection) {
             ->method('prepareForCart')
             ->willReturn('string');
 
-        $this->priceCurrency->expects($this->once())
-            ->method('convert')
-            ->willReturn(3.14);
-
         $result = $this->model->prepareForCartAdvanced($buyRequest, $product);
         $this->assertEquals('string', $result);
     }