MAGETWO-38383: Increase Unit Test Code Coverage

- Corrected assertions for failing unit tests.

Author: Ian Daszkowski

setup/src/Magento/Setup/Test/Unit/Fixtures/ConfigurableProductsFixtureTest.php

@@ -80,7 +80,7 @@ public function testExecute()
         $valueMap = [
             [
                 'Magento\ImportExport\Model\Import',
-                ['data' => ['entity' => 'catalog_product', 'behavior' => 'replace']],
+                ['data' => ['entity' => 'catalog_product', 'behavior' => 'append']],
                 $importMock
             ],
             ['Magento\Store\Model\StoreManager', [], $storeManagerMock]

setup/src/Magento/Setup/Test/Unit/Fixtures/SimpleProductsFixtureTest.php

@@ -70,10 +70,10 @@ public function testExecute()
         $categoryMock->expects($this->once())
             ->method('getPath')
             ->willReturn('path/to/category');
-        $categoryMock->expects($this->exactly(4))
+        $categoryMock->expects($this->exactly(5))
             ->method('load')
             ->willReturnSelf();
-        $categoryMock->expects($this->exactly(2))
+        $categoryMock->expects($this->exactly(3))
             ->method('getName')
             ->willReturn('category_name');