diff --git a/core/modules/block_content/src/Tests/BlockContentTypeTest.php b/core/modules/block_content/src/Tests/BlockContentTypeTest.php
index 7503890..4270538 100644
--- a/core/modules/block_content/src/Tests/BlockContentTypeTest.php
+++ b/core/modules/block_content/src/Tests/BlockContentTypeTest.php
@@ -64,7 +64,7 @@ public function testBlockContentTypeCreation() {
     $this->assertTrue($block_type, 'The new block type has been created.');
 
     $this->drupalGet('block/add/' . $type->id());
-    $this->assertResponse(200, 'The new block type can be accessed at bloack/add.');
+    $this->assertResponse(200, 'The new block type can be accessed at block/add.');
 
     // Create a block type via the user interface.
     $edit = array(
diff --git a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
index 29867b1..855f817 100644
--- a/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
+++ b/core/modules/ckeditor/tests/modules/src/Plugin/CKEditorPlugin/LlamaButton.php
@@ -26,7 +26,7 @@ class LlamaButton extends Llama implements CKEditorPluginButtonsInterface {
   function getButtons() {
     return array(
       'Llama' => array(
-        'label' => t('Insert Lllama'),
+        'label' => t('Insert Llama'),
       ),
     );
   }
diff --git a/core/modules/config/src/Tests/ConfigDependencyTest.php b/core/modules/config/src/Tests/ConfigDependencyTest.php
index fc85523..411fa9c 100644
--- a/core/modules/config/src/Tests/ConfigDependencyTest.php
+++ b/core/modules/config/src/Tests/ConfigDependencyTest.php
@@ -41,7 +41,7 @@ public function testNonEntity() {
   /**
    * Tests creating dependencies on configuration entities.
    */
-  public function testDependencyMangement() {
+  public function testDependencyManagement() {
     $config_manager = \Drupal::service('config.manager');
     $storage = $this->container->get('entity.manager')->getStorage('config_test');
     // Test dependencies between modules.
diff --git a/core/modules/config/src/Tests/ConfigOtherModuleTest.php b/core/modules/config/src/Tests/ConfigOtherModuleTest.php
index aaa90a8..df5e510 100644
--- a/core/modules/config/src/Tests/ConfigOtherModuleTest.php
+++ b/core/modules/config/src/Tests/ConfigOtherModuleTest.php
@@ -72,7 +72,7 @@ public function testInstallOtherModuleFirst() {
   /**
    * Tests enabling the provider of the config entity type first.
    */
-  public function testInstallConfigEnityModuleFirst() {
+  public function testInstallConfigEntityModuleFirst() {
     $this->installModule('config_test');
     $this->assertFalse(entity_load('config_test', 'other_module_test', TRUE), 'Default configuration provided by config_other_module_config_test does not exist.');
 
diff --git a/core/modules/config/src/Tests/ConfigSchemaTest.php b/core/modules/config/src/Tests/ConfigSchemaTest.php
index 11865ef..9ed809f 100644
--- a/core/modules/config/src/Tests/ConfigSchemaTest.php
+++ b/core/modules/config/src/Tests/ConfigSchemaTest.php
@@ -227,7 +227,7 @@ function testSchemaMapping() {
     $definition = \Drupal::service('config.typed')->getDefinition('config_schema_test.someschema.somemodule.section_one.subsection');
     // This should be the schema of config_schema_test.someschema.somemodule.*.*.
     $expected = array();
-    $expected['label'] = 'Schema multiple filesytem marker test';
+    $expected['label'] = 'Schema multiple filesystem marker test';
     $expected['class'] = '\Drupal\Core\Config\Schema\Mapping';
     $expected['mapping']['langcode']['type'] = 'string';
     $expected['mapping']['langcode']['label'] = 'Language code';
diff --git a/core/modules/config/tests/config_schema_test/config/schema/config_schema_test.schema.yml b/core/modules/config/tests/config_schema_test/config/schema/config_schema_test.schema.yml
index a41dd39..004ae2b 100644
--- a/core/modules/config/tests/config_schema_test/config/schema/config_schema_test.schema.yml
+++ b/core/modules/config/tests/config_schema_test/config/schema/config_schema_test.schema.yml
@@ -65,7 +65,7 @@ config_schema_test.someschema.with_parents.key_3:
 
 config_schema_test.someschema.somemodule.*.*:
   type: config_object
-  label: 'Schema multiple filesytem marker test'
+  label: 'Schema multiple filesystem marker test'
   mapping:
     testid:
       type: string
diff --git a/core/modules/field_ui/src/Tests/ManageFieldsTest.php b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
index 0d365aa..6c42087 100644
--- a/core/modules/field_ui/src/Tests/ManageFieldsTest.php
+++ b/core/modules/field_ui/src/Tests/ManageFieldsTest.php
@@ -391,7 +391,7 @@ function testDefaultValue() {
     // Check that invalid default values are rejected.
     $edit = array($element_name => '-1');
     $this->drupalPostForm($admin_path, $edit, t('Save settings'));
-    $this->assertText("$field_name does not accept the value -1", 'Form vaildation failed.');
+    $this->assertText("$field_name does not accept the value -1", 'Form validation failed.');
 
     // Check that the default value is saved.
     $edit = array($element_name => '1');
diff --git a/core/modules/hal/src/Tests/DenormalizeTest.php b/core/modules/hal/src/Tests/DenormalizeTest.php
index 599efcd..c8f1590 100644
--- a/core/modules/hal/src/Tests/DenormalizeTest.php
+++ b/core/modules/hal/src/Tests/DenormalizeTest.php
@@ -188,7 +188,7 @@ public function testBasicFieldDenormalization() {
   /**
    * Verifies that the denormalized entity is correct in the PATCH context.
    */
-  public function testPatchDenormailzation() {
+  public function testPatchDenormalization() {
     $data = array(
       '_links' => array(
         'type' => array(
diff --git a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
index f46c0e0..089b3fd 100644
--- a/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
+++ b/core/modules/language/src/Tests/LanguageUILanguageNegotiationTest.php
@@ -267,7 +267,7 @@ function testUILanguageNegotiation() {
       'expect' => $language_string,
       'expected_method_id' => LanguageNegotiationUser::METHOD_ID,
       'http_header' => array(),
-      'message' => 'USER > DEFAULT: defined prefereed user language setting, the UI language is based on user setting',
+      'message' => 'USER > DEFAULT: defined preferred user language setting, the UI language is based on user setting',
     );
     $this->runTest($test);
 
@@ -309,7 +309,7 @@ function testUILanguageNegotiation() {
       'expect' => $language_string,
       'expected_method_id' => LanguageNegotiationUserAdmin::METHOD_ID,
       'http_header' => array(),
-      'message' => 'USER ADMIN > DEFAULT: defined prefereed user admin language setting, the UI language is based on user setting',
+      'message' => 'USER ADMIN > DEFAULT: defined preferred user admin language setting, the UI language is based on user setting',
     );
     $this->runTest($test);
 
diff --git a/core/modules/language/src/Tests/LanguageUrlRewritingTest.php b/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
index 021c587..6aab1d2 100644
--- a/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
+++ b/core/modules/language/src/Tests/LanguageUrlRewritingTest.php
@@ -157,7 +157,7 @@ function testDomainNameNegotiationPort() {
 
     $expected = $index_php ? 'http://example.fr:90/index.php' : 'http://example.fr:90' . rtrim(base_path(), '/') . '/';
 
-    $this->assertEqual($url, $expected, 'A given port is not overriden.');
+    $this->assertEqual($url, $expected, 'A given port is not overridden.');
 
   }
 
diff --git a/core/modules/locale/src/Tests/LocaleUpdateInterfaceTest.php b/core/modules/locale/src/Tests/LocaleUpdateInterfaceTest.php
index e4c7e17..e90b6b0 100644
--- a/core/modules/locale/src/Tests/LocaleUpdateInterfaceTest.php
+++ b/core/modules/locale/src/Tests/LocaleUpdateInterfaceTest.php
@@ -72,7 +72,7 @@ public function testInterface() {
     $this->assertText(t('Translation update status'), 'Status message');
     $this->assertRaw(t('Updates available for: @languages. See the <a href="@updates">Available translation updates</a> page for more information.', array('@languages' => t('German'), '@updates' => \Drupal::url('locale.translate_status'))), 'Updates available message');
     $this->drupalGet('admin/reports/translations');
-    $this->assertText(t('Updates for: @modules', array('@modules' => 'Locale test translate')), 'Translations avaiable');
+    $this->assertText(t('Updates for: @modules', array('@modules' => 'Locale test translate')), 'Translations available');
 
     // Set locale_test_translate module to have a dev release and no
     // translation found.
diff --git a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FilterFormat.php b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FilterFormat.php
index 62c211f..2a9019c 100644
--- a/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FilterFormat.php
+++ b/core/modules/migrate_drupal/src/Plugin/migrate/source/d6/FilterFormat.php
@@ -37,7 +37,7 @@ public function fields() {
       'format' => $this->t('Format ID.'),
       'name' => $this->t('The name of the filter format.'),
       'roles' => $this->t('The user roles that can use the format.'),
-      'cache' => $this->t('Flag to indicate whether format is cachable. (1 = cachable, 0 = not cachable).'),
+      'cache' => $this->t('Flag to indicate whether format is cacheable. (1 = cacheable, 0 = not cacheable).'),
     );
   }
 
diff --git a/core/modules/node/src/Entity/NodeType.php b/core/modules/node/src/Entity/NodeType.php
index 2d8ac15..2867e53 100644
--- a/core/modules/node/src/Entity/NodeType.php
+++ b/core/modules/node/src/Entity/NodeType.php
@@ -143,8 +143,8 @@ public function displaySubmitted() {
   /**
    * {@inheritdoc}
    */
-  public function setDisplaySubmitted($display_submtited) {
-    $this->display_submitted = $display_submtited;
+  public function setDisplaySubmitted($display_submitted) {
+    $this->display_submitted = $display_submitted;
   }
 
   /**
diff --git a/core/modules/node/src/NodeTypeInterface.php b/core/modules/node/src/NodeTypeInterface.php
index 6fc9ea9..70b60dd 100644
--- a/core/modules/node/src/NodeTypeInterface.php
+++ b/core/modules/node/src/NodeTypeInterface.php
@@ -52,7 +52,7 @@ public function displaySubmitted();
    * @param bool $display_submitted
    *   TRUE if the submitted by information should be shown.
    */
-  public function setDisplaySubmitted($display_submtited);
+  public function setDisplaySubmitted($display_submitted);
 
   /**
    * Returns the preview mode.
diff --git a/core/modules/node/src/Tests/NodeTitleXSSTest.php b/core/modules/node/src/Tests/NodeTitleXSSTest.php
index 0f4a99a..221222a 100644
--- a/core/modules/node/src/Tests/NodeTitleXSSTest.php
+++ b/core/modules/node/src/Tests/NodeTitleXSSTest.php
@@ -35,7 +35,7 @@ function testNodeTitleXSS() {
 
     $this->drupalGet('node/' . $node->id());
     // assertTitle() decodes HTML-entities inside the <title> element.
-    $this->assertTitle($title . ' | Drupal', 'Title is diplayed when viewing a node.');
+    $this->assertTitle($title . ' | Drupal', 'Title is displayed when viewing a node.');
     $this->assertNoRaw($xss, 'Harmful tags are escaped when viewing a node.');
 
     $this->drupalGet('node/' . $node->id() . '/edit');
diff --git a/core/modules/quickedit/src/Form/QuickEditFieldForm.php b/core/modules/quickedit/src/Form/QuickEditFieldForm.php
index de8dc5b..439f4e9 100644
--- a/core/modules/quickedit/src/Form/QuickEditFieldForm.php
+++ b/core/modules/quickedit/src/Form/QuickEditFieldForm.php
@@ -143,7 +143,7 @@ protected function init(FormStateInterface $form_state, EntityInterface $entity,
     // Fetch the display used by the form. It is the display for the 'default'
     // form mode, with only the current field visible.
     $display = EntityFormDisplay::collectRenderDisplay($entity, 'default');
-    foreach ($display->getComponents() as $name => $optipns) {
+    foreach ($display->getComponents() as $name => $options) {
       if ($name != $field_name) {
         $display->removeComponent($name);
       }
diff --git a/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php b/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
index 8c5280f..656e001 100644
--- a/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
+++ b/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
   /**
    * Verify the keywords are captured and conditions respected.
    */
-  function testSearchKeyswordsConditions() {
+  function testSearchKeywordsConditions() {
     // No keys, not conditions - no results.
     $this->drupalGet('search/dummy_path');
     $this->assertNoText('Dummy search snippet to display');
diff --git a/core/modules/simpletest/simpletest.install b/core/modules/simpletest/simpletest.install
index b4792ea..ceb96f3 100644
--- a/core/modules/simpletest/simpletest.install
+++ b/core/modules/simpletest/simpletest.install
@@ -160,7 +160,7 @@ function simpletest_schema() {
     ),
   );
   $schema['simpletest_test_id'] = array(
-    'description' => 'Stores simpletest test IDs, used to auto-incrament the test ID so that a fresh test ID is used.',
+    'description' => 'Stores simpletest test IDs, used to auto-increment the test ID so that a fresh test ID is used.',
     'fields' => array(
       'test_id'  => array(
         'type' => 'serial',
diff --git a/core/modules/simpletest/src/AssertContentTrait.php b/core/modules/simpletest/src/AssertContentTrait.php
index 100a1c9..240aea9 100644
--- a/core/modules/simpletest/src/AssertContentTrait.php
+++ b/core/modules/simpletest/src/AssertContentTrait.php
@@ -645,13 +645,13 @@ protected function assertUniqueTextHelper($text, $message = '', $group = 'Other'
     if (!$message) {
       $message = '"' . $text . '"' . ($be_unique ? ' found only once' : ' found more than once');
     }
-    $first_occurance = strpos($this->getTextContent(), $text);
-    if ($first_occurance === FALSE) {
+    $first_occurrence = strpos($this->getTextContent(), $text);
+    if ($first_occurrence === FALSE) {
       return $this->assert(FALSE, $message, $group);
     }
-    $offset = $first_occurance + strlen($text);
-    $second_occurance = strpos($this->getTextContent(), $text, $offset);
-    return $this->assert($be_unique == ($second_occurance === FALSE), $message, $group);
+    $offset = $first_occurrence + strlen($text);
+    $second_occurrence = strpos($this->getTextContent(), $text, $offset);
+    return $this->assert($be_unique == ($second_occurrence === FALSE), $message, $group);
   }
 
   /**
diff --git a/core/modules/simpletest/src/TestBase.php b/core/modules/simpletest/src/TestBase.php
index 9a38774..fa92606 100644
--- a/core/modules/simpletest/src/TestBase.php
+++ b/core/modules/simpletest/src/TestBase.php
@@ -1640,7 +1640,7 @@ public function copyConfig(StorageInterface $source_storage, StorageInterface $t
   }
 
   /**
-   * Configuration accessor for tests. Returns non-overriden configuration.
+   * Configuration accessor for tests. Returns non-overridden configuration.
    *
    * @param $name
    *   Configuration name.
diff --git a/core/modules/system/src/Form/PerformanceForm.php b/core/modules/system/src/Form/PerformanceForm.php
index 7171a41..542d691 100644
--- a/core/modules/system/src/Form/PerformanceForm.php
+++ b/core/modules/system/src/Form/PerformanceForm.php
@@ -61,11 +61,11 @@ class PerformanceForm extends ConfigFormBase {
    * @param \Drupal\Core\Asset\AssetCollectionOptimizerInterface $js_collection_optimizer
    *   The JavaScript asset collection optimizer service.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, CacheBackendInterface $render_cache, DateFormatter $date_formater, AssetCollectionOptimizerInterface $css_collection_optimizer, AssetCollectionOptimizerInterface $js_collection_optimizer) {
+  public function __construct(ConfigFactoryInterface $config_factory, CacheBackendInterface $render_cache, DateFormatter $date_formatter, AssetCollectionOptimizerInterface $css_collection_optimizer, AssetCollectionOptimizerInterface $js_collection_optimizer) {
     parent::__construct($config_factory);
 
     $this->renderCache = $render_cache;
-    $this->dateFormatter = $date_formater;
+    $this->dateFormatter = $date_formatter;
     $this->cssCollectionOptimizer = $css_collection_optimizer;
     $this->jsCollectionOptimizer = $js_collection_optimizer;
   }
diff --git a/core/modules/system/src/Tests/Common/UrlTest.php b/core/modules/system/src/Tests/Common/UrlTest.php
index f60dfa6..5bd590e 100644
--- a/core/modules/system/src/Tests/Common/UrlTest.php
+++ b/core/modules/system/src/Tests/Common/UrlTest.php
@@ -288,7 +288,7 @@ function testExternalUrls() {
     $url = $test_url . '#drupal';
     $fragment = $this->randomMachineName(10);
     $result = Url::fromUri($url, array('fragment' => $fragment))->toString();
-    $this->assertEqual($test_url . '#' . $fragment, $result, 'External URL fragment is overidden with a custom fragment in $options.');
+    $this->assertEqual($test_url . '#' . $fragment, $result, 'External URL fragment is overridden with a custom fragment in $options.');
 
     // Verify external URL can contain a query string.
     $url = $test_url . '?drupal=awesome';
diff --git a/core/modules/system/src/Tests/Database/FetchTest.php b/core/modules/system/src/Tests/Database/FetchTest.php
index 30ae0ac..0cb8dfc 100644
--- a/core/modules/system/src/Tests/Database/FetchTest.php
+++ b/core/modules/system/src/Tests/Database/FetchTest.php
@@ -128,7 +128,7 @@ function testQueryFetchCol() {
     $result = db_query('SELECT name FROM {test} WHERE age > :age', array(':age' => 25));
     $i = 0;
     foreach ($result as $record) {
-      $this->assertIdentical($record->name, $column[$i++], 'Column matches direct accesss.');
+      $this->assertIdentical($record->name, $column[$i++], 'Column matches direct access.');
     }
   }
 
diff --git a/core/modules/system/src/Tests/Database/InsertTest.php b/core/modules/system/src/Tests/Database/InsertTest.php
index 75b24db..c4d5bd3 100644
--- a/core/modules/system/src/Tests/Database/InsertTest.php
+++ b/core/modules/system/src/Tests/Database/InsertTest.php
@@ -104,7 +104,7 @@ function testRepeatedInsert() {
   /**
    * Tests that we can specify fields without values and specify values later.
    */
-  function testInsertFieldOnlyDefinintion() {
+  function testInsertFieldOnlyDefinition() {
     // This is useful for importers, when we want to create a query and define
     // its fields once, then loop over a multi-insert execution.
     db_insert('test')
diff --git a/core/modules/system/src/Tests/Database/InvalidDataTest.php b/core/modules/system/src/Tests/Database/InvalidDataTest.php
index cbc7226..84645ac 100644
--- a/core/modules/system/src/Tests/Database/InvalidDataTest.php
+++ b/core/modules/system/src/Tests/Database/InvalidDataTest.php
@@ -38,7 +38,7 @@ function testInsertDuplicateData() {
           'job' => 'Singer',
         ))
         ->execute();
-      $this->fail('Insert succeedded when it should not have.');
+      $this->fail('Insert succeeded when it should not have.');
     }
     catch (IntegrityConstraintViolationException $e) {
       // Check if the first record was inserted.
diff --git a/core/modules/system/src/Tests/Database/SelectComplexTest.php b/core/modules/system/src/Tests/Database/SelectComplexTest.php
index 2b6b3db..880c6eb 100644
--- a/core/modules/system/src/Tests/Database/SelectComplexTest.php
+++ b/core/modules/system/src/Tests/Database/SelectComplexTest.php
@@ -226,7 +226,7 @@ function testCountQueryRemovals() {
     $db_type = Database::getConnection()->databaseType();
     $this->assertEqual($orderby['name'], ($db_type == 'pgsql' ? 'ASC NULLS FIRST' : 'ASC'), 'Query correctly sets ordering clause.');
     $orderby = $count->getOrderBy();
-    $this->assertFalse(isset($orderby['name']), 'Count query correctly unsets ordering caluse.');
+    $this->assertFalse(isset($orderby['name']), 'Count query correctly unsets ordering clause.');
 
     // Make sure that the count query works.
     $count = $count->execute()->fetchField();
diff --git a/core/modules/system/src/Tests/Database/TaggingTest.php b/core/modules/system/src/Tests/Database/TaggingTest.php
index 37566fe..5c7a92a 100644
--- a/core/modules/system/src/Tests/Database/TaggingTest.php
+++ b/core/modules/system/src/Tests/Database/TaggingTest.php
@@ -124,7 +124,7 @@ function testMetaData() {
     $query->addMetaData('test', $data);
 
     $return = $query->getMetaData('test');
-    $this->assertEqual($data, $return, 'Corect metadata returned.');
+    $this->assertEqual($data, $return, 'Correct metadata returned.');
 
     $return = $query->getMetaData('nothere');
     $this->assertNull($return, 'Non-existent key returned NULL.');
diff --git a/core/modules/system/src/Tests/Entity/EntityFieldTest.php b/core/modules/system/src/Tests/Entity/EntityFieldTest.php
index 4f562a9..c932856 100644
--- a/core/modules/system/src/Tests/Entity/EntityFieldTest.php
+++ b/core/modules/system/src/Tests/Entity/EntityFieldTest.php
@@ -593,12 +593,12 @@ public function getContainedStrings(TypedDataInterface $wrapper, $depth, array &
   public function testDataTypes() {
     $types = \Drupal::typedDataManager()->getDefinitions();
     foreach (entity_test_entity_types() as $entity_type) {
-      $this->assertTrue($types['entity:' . $entity_type]['class'], 'Entity data type registed.');
+      $this->assertTrue($types['entity:' . $entity_type]['class'], 'Entity data type registered.');
     }
     // Check bundle types are provided as well.
     entity_test_create_bundle('bundle');
     $types = \Drupal::typedDataManager()->getDefinitions();
-    $this->assertTrue($types['entity:entity_test:bundle']['class'], 'Entity bundle data type registed.');
+    $this->assertTrue($types['entity:entity_test:bundle']['class'], 'Entity bundle data type registered.');
   }
 
   /**
diff --git a/core/modules/system/src/Tests/Form/StorageTest.php b/core/modules/system/src/Tests/Form/StorageTest.php
index 64a9983..94808cf 100644
--- a/core/modules/system/src/Tests/Form/StorageTest.php
+++ b/core/modules/system/src/Tests/Form/StorageTest.php
@@ -53,7 +53,7 @@ function testForm() {
     // Reset the form to the values of the storage, using a form rebuild
     // triggered by button of type button.
     $this->drupalPostForm(NULL, array('title' => 'changed'), 'Reset');
-    $this->assertFieldByName('title', 'new', 'Values have been resetted.');
+    $this->assertFieldByName('title', 'new', 'Values have been reset.');
     // After rebuilding, the form has been cached.
     $this->assertText('Form constructions: 4');
 
@@ -78,7 +78,7 @@ function testFormCached() {
     // Reset the form to the values of the storage, using a form rebuild
     // triggered by button of type button.
     $this->drupalPostForm(NULL, array('title' => 'changed'), 'Reset');
-    $this->assertFieldByName('title', 'new', 'Values have been resetted.');
+    $this->assertFieldByName('title', 'new', 'Values have been reset.');
     $this->assertText('Form constructions: 3');
 
     $this->drupalPostForm(NULL, $edit, 'Save');
diff --git a/core/modules/system/src/Tests/Module/InstallUninstallTest.php b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
index 125b754..b26cb7c 100644
--- a/core/modules/system/src/Tests/Module/InstallUninstallTest.php
+++ b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
@@ -101,7 +101,7 @@ public function testInstallUninstall() {
       // Uninstall the original module, and check appropriate
       // hooks, tables, and log messages. (Later, we'll go back and do the
       // same thing for modules that were enabled automatically.)
-      $this->assertSuccessfullUninstall($name, $package);
+      $this->assertSuccessfulUninstall($name, $package);
     }
 
     // Go through all modules that were automatically installed, and try to
@@ -116,7 +116,7 @@ public function testInstallUninstall() {
         $disabled_checkbox = $this->xpath('//input[@type="checkbox" and @disabled="disabled" and @name="uninstall[' . $name . ']"]');
         if (empty($disabled_checkbox)) {
           $automatically_installed = array_diff($automatically_installed, array($name));
-          $this->assertSuccessfullUninstall($name, $package);
+          $this->assertSuccessfulUninstall($name, $package);
         }
       }
       $final_count = count($automatically_installed);
@@ -151,7 +151,7 @@ public function testInstallUninstall() {
    *   (optional) The package of the module to uninstall. Defaults
    *   to 'Core'.
    */
-  protected function assertSuccessfullUninstall($module, $package = 'Core') {
+  protected function assertSuccessfulUninstall($module, $package = 'Core') {
     $edit = array();
     if ($module == 'forum') {
       // Forum cannot be uninstalled until all of the content entities related
diff --git a/core/modules/update/tests/modules/update_test/src/MockFileTransfer.php b/core/modules/update/tests/modules/update_test/src/MockFileTransfer.php
index b47fd6b..97b2988 100644
--- a/core/modules/update/tests/modules/update_test/src/MockFileTransfer.php
+++ b/core/modules/update/tests/modules/update_test/src/MockFileTransfer.php
@@ -27,7 +27,7 @@ public static function factory() {
    */
   public function getSettingsForm() {
     $form = array();
-    $form['udpate_test_username'] = array(
+    $form['update_test_username'] = array(
       '#type' => 'textfield',
       '#title' => t('Update Test Username'),
     );
diff --git a/core/modules/user/src/Tests/UserDeleteTest.php b/core/modules/user/src/Tests/UserDeleteTest.php
index 656373d..2ff00d9 100644
--- a/core/modules/user/src/Tests/UserDeleteTest.php
+++ b/core/modules/user/src/Tests/UserDeleteTest.php
@@ -39,7 +39,7 @@ function testUserDeleteMultiple() {
 
     $this->assertTrue($roles_created > 0, 'Role assignments created for new users and deletion of role assignments can be tested');
     // We should be able to load one of the users.
-    $this->assertTrue(User::load($user_a->id()), 'User is created and deltion of user can be tested');
+    $this->assertTrue(User::load($user_a->id()), 'User is created and deletion of user can be tested');
     // Delete the users.
     user_delete_multiple($uids);
     // Test if the roles assignments are deleted.
diff --git a/core/modules/user/src/Tests/UserRegistrationTest.php b/core/modules/user/src/Tests/UserRegistrationTest.php
index ff3fa30..cc5785a 100644
--- a/core/modules/user/src/Tests/UserRegistrationTest.php
+++ b/core/modules/user/src/Tests/UserRegistrationTest.php
@@ -254,7 +254,7 @@ function testRegistrationWithUserFields() {
     // Check user fields.
     $accounts = entity_load_multiple_by_properties('user', array('name' => $name, 'mail' => $mail));
     $new_user = reset($accounts);
-    $this->assertEqual($new_user->test_user_field->value, $value, 'The field value was correclty saved.');
+    $this->assertEqual($new_user->test_user_field->value, $value, 'The field value was correctly saved.');
 
     // Check that the 'add more' button works.
     $field_storage->setCardinality(FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED);
@@ -283,9 +283,9 @@ function testRegistrationWithUserFields() {
       // Check user fields.
       $accounts = entity_load_multiple_by_properties('user', array('name' => $name, 'mail' => $mail));
       $new_user = reset($accounts);
-      $this->assertEqual($new_user->test_user_field[0]->value, $value, format_string('@js : The field value was correclty saved.', array('@js' => $js)));
-      $this->assertEqual($new_user->test_user_field[1]->value, $value + 1, format_string('@js : The field value was correclty saved.', array('@js' => $js)));
-      $this->assertEqual($new_user->test_user_field[2]->value, $value + 2, format_string('@js : The field value was correclty saved.', array('@js' => $js)));
+      $this->assertEqual($new_user->test_user_field[0]->value, $value, format_string('@js : The field value was correctly saved.', array('@js' => $js)));
+      $this->assertEqual($new_user->test_user_field[1]->value, $value + 1, format_string('@js : The field value was correctly saved.', array('@js' => $js)));
+      $this->assertEqual($new_user->test_user_field[2]->value, $value + 2, format_string('@js : The field value was correctly saved.', array('@js' => $js)));
     }
   }
 
diff --git a/core/modules/views/src/Plugin/views/pager/SqlBase.php b/core/modules/views/src/Plugin/views/pager/SqlBase.php
index a3d0d22..7b65100 100644
--- a/core/modules/views/src/Plugin/views/pager/SqlBase.php
+++ b/core/modules/views/src/Plugin/views/pager/SqlBase.php
@@ -371,7 +371,7 @@ public function exposedFormAlter(&$form, FormStateInterface $form_state) {
   public function exposedFormValidate(&$form, FormStateInterface $form_state) {
     if (!$form_state->isValueEmpty('offset') && trim($form_state->getValue('offset'))) {
       if (!is_numeric($form_state->getValue('offset')) || $form_state->getValue('offset') < 0) {
-        $form_state->setErrorByName('offset', $this->t('Offset must be an number greather or equal than 0.'));
+        $form_state->setErrorByName('offset', $this->t('Offset must be an number greater or equal than 0.'));
       }
     }
   }
diff --git a/core/modules/views/src/Plugin/views/style/Table.php b/core/modules/views/src/Plugin/views/style/Table.php
index dea6f0f..2cf4b27 100644
--- a/core/modules/views/src/Plugin/views/style/Table.php
+++ b/core/modules/views/src/Plugin/views/style/Table.php
@@ -408,7 +408,7 @@ public function buildOptionsForm(&$form, FormStateInterface $form_state) {
       '#type' => 'checkbox',
       '#title' => $this->t('Show the empty text in the table'),
       '#default_value' => $this->options['empty_table'],
-      '#description' => $this->t('Per default the table is hidden for an empty view. With this option it is posible to show an empty table with the text in it.'),
+      '#description' => $this->t('Per default the table is hidden for an empty view. With this option it is possible to show an empty table with the text in it.'),
     );
 
     $form['description_markup'] = array(
diff --git a/core/modules/views/src/Tests/Handler/FieldWebTest.php b/core/modules/views/src/Tests/Handler/FieldWebTest.php
index 6468945..e672d83 100644
--- a/core/modules/views/src/Tests/Handler/FieldWebTest.php
+++ b/core/modules/views/src/Tests/Handler/FieldWebTest.php
@@ -504,7 +504,7 @@ public function testTextRendering() {
     $random_text_2 = $this->randomMachineName(2);
     $random_text_4 = $this->randomMachineName(4);
     $random_text_8 = $this->randomMachineName(8);
-    $touples = array(
+    $tuples = array(
       // Create one string which doesn't fit at all into the limit.
       array(
         'value' => $random_text_8,
@@ -533,15 +533,15 @@ public function testTextRendering() {
       )
     );
 
-    foreach ($touples as $touple) {
-      $row->views_test_data_name = $touple['value'];
+    foreach ($tuples as $tuple) {
+      $row->views_test_data_name = $tuple['value'];
       $output = $name_field->advancedRender($row);
 
-      if ($touple['trimmed']) {
-        $this->assertNotSubString($output, $touple['value'], format_string('The untrimmed value (!untrimmed) should not appear in the trimmed output (!output).', array('!untrimmed' => $touple['value'], '!output' => $output)));
+      if ($tuple['trimmed']) {
+        $this->assertNotSubString($output, $tuple['value'], format_string('The untrimmed value (!untrimmed) should not appear in the trimmed output (!output).', array('!untrimmed' => $tuple['value'], '!output' => $output)));
       }
-      if (!empty($touble['trimmed_value'])) {
-        $this->assertSubString($output, $touple['trimmed_value'], format_string('The trimmed value (!trimmed) should appear in the trimmed output (!output).', array('!trimmed' => $touple['trimmed_value'], '!output' => $output)));
+      if (!empty($tuple['trimmed_value'])) {
+        $this->assertSubString($output, $tuple['trimmed_value'], format_string('The trimmed value (!trimmed) should appear in the trimmed output (!output).', array('!trimmed' => $tuple['trimmed_value'], '!output' => $output)));
       }
     }
 
diff --git a/core/modules/views/src/Tests/Handler/FilterDateTest.php b/core/modules/views/src/Tests/Handler/FilterDateTest.php
index 33b9211..9a43a8b 100644
--- a/core/modules/views/src/Tests/Handler/FilterDateTest.php
+++ b/core/modules/views/src/Tests/Handler/FilterDateTest.php
@@ -155,7 +155,7 @@ protected function _testUiValidation() {
     // Generate a definitive wrong value, which should be checked by validation.
     $edit['options[value][value]'] = $this->randomString() . '-------';
     $this->drupalPostForm(NULL, $edit, t('Apply'));
-    $this->assertText(t('Invalid date format.'), 'Make sure that validation is runned and the invalidate date format is identified.');
+    $this->assertText(t('Invalid date format.'), 'Make sure that validation is run and the invalidate date format is identified.');
   }
 
 }
diff --git a/core/modules/views/src/Tests/Plugin/JoinTest.php b/core/modules/views/src/Tests/Plugin/JoinTest.php
index e8fd85d..2648cd0 100644
--- a/core/modules/views/src/Tests/Plugin/JoinTest.php
+++ b/core/modules/views/src/Tests/Plugin/JoinTest.php
@@ -94,7 +94,7 @@ public function testBasePlugin() {
     );
     $join = $this->manager->createInstance('standard', $configuration);
     $this->assertTrue($join instanceof JoinPluginBase, 'The correct join class got loaded.');
-    $this->assertNull($join->extra, 'The field extra was not overriden.');
+    $this->assertNull($join->extra, 'The field extra was not overridden.');
     $this->assertTrue($join->adjusted, 'The field adjusted was set correctly.');
 
     // Build the actual join values and read them back from the dbtng query
diff --git a/core/modules/views/src/Tests/ViewAjaxTest.php b/core/modules/views/src/Tests/ViewAjaxTest.php
index 1121f41..c17c15e 100644
--- a/core/modules/views/src/Tests/ViewAjaxTest.php
+++ b/core/modules/views/src/Tests/ViewAjaxTest.php
@@ -60,7 +60,7 @@ public function testAjaxView() {
 
     $this->setRawContent($data[1]['data']);
     $result = $this->xpath('//div[contains(@class, "views-row")]');
-    $this->assertEqual(count($result), 2, 'Ensure that two items are renderd in the HTML.');
+    $this->assertEqual(count($result), 2, 'Ensure that two items are rendered in the HTML.');
   }
 
 }
diff --git a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
index ea6a601..3197aae 100644
--- a/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
+++ b/core/modules/views/tests/src/Unit/Routing/ViewPageControllerTest.php
@@ -167,7 +167,7 @@ public function testHandleWithArgumentsWithoutOverridden() {
    *
    * Note: This test does not care about upcasting for now.
    */
-  public function testHandleWithArgumentsOnOveriddenRoute() {
+  public function testHandleWithArgumentsOnOverriddenRoute() {
     $view = $this->getMock('Drupal\views\ViewEntityInterface');
 
     $this->storage->expects($this->once())
@@ -226,7 +226,7 @@ public function testHandleWithArgumentsOnOveriddenRoute() {
    * This test care about upcasted values and ensures that the raw variables
    * are pulled in.
    */
-  public function testHandleWithArgumentsOnOveriddenRouteWithUpcasting() {
+  public function testHandleWithArgumentsOnOverriddenRouteWithUpcasting() {
     $view = $this->getMock('Drupal\views\ViewEntityInterface');
 
     $this->storage->expects($this->once())
diff --git a/core/modules/views_ui/src/Tests/GroupByTest.php b/core/modules/views_ui/src/Tests/GroupByTest.php
index a359be6..b8bd350 100644
--- a/core/modules/views_ui/src/Tests/GroupByTest.php
+++ b/core/modules/views_ui/src/Tests/GroupByTest.php
@@ -29,8 +29,8 @@ class GroupByTest extends UITestBase {
   function testGroupBySave() {
     $this->drupalGet('admin/structure/views/view/test_views_groupby_save/edit');
 
-    $edit_groubpy_url = 'admin/structure/views/nojs/handler-group/test_views_groupby_save/default/field/id';
-    $this->assertNoLinkByHref($edit_groubpy_url, 0, 'No aggregation link found.');
+    $edit_groupby_url = 'admin/structure/views/nojs/handler-group/test_views_groupby_save/default/field/id';
+    $this->assertNoLinkByHref($edit_groupby_url, 0, 'No aggregation link found.');
 
     // Enable aggregation on the view.
     $edit = array(
@@ -38,10 +38,10 @@ function testGroupBySave() {
     );
     $this->drupalPostForm('admin/structure/views/nojs/display/test_views_groupby_save/default/group_by', $edit, t('Apply'));
 
-    $this->assertLinkByHref($edit_groubpy_url, 0, 'Aggregation link found.');
+    $this->assertLinkByHref($edit_groupby_url, 0, 'Aggregation link found.');
 
     // Change the groupby type in the UI.
-    $this->drupalPostForm($edit_groubpy_url, array('options[group_type]' => 'count'), t('Apply'));
+    $this->drupalPostForm($edit_groupby_url, array('options[group_type]' => 'count'), t('Apply'));
     $this->assertLink('COUNT(Views test: ID)', 0, 'The count setting is displayed in the UI');
 
     $this->drupalPostForm(NULL, array(), t('Save'));