diff --git a/core/modules/breakpoint/config/schema/breakpoint.schema.yml b/core/modules/breakpoint/config/schema/breakpoint.schema.yml
index 6281da7..0e90f7c 100644
--- a/core/modules/breakpoint/config/schema/breakpoint.schema.yml
+++ b/core/modules/breakpoint/config/schema/breakpoint.schema.yml
@@ -25,7 +25,7 @@ breakpoint.breakpoint.*.*.*:
       type: string
       label: 'Source type'
     weight:
-      type: string
+      type: integer
       label: 'Weight'
     multipliers:
       type: sequence
diff --git a/core/modules/config/lib/Drupal/config/Tests/DefaultConfigTest.php b/core/modules/config/lib/Drupal/config/Tests/DefaultConfigTest.php
new file mode 100644
index 0000000..509325b
--- /dev/null
+++ b/core/modules/config/lib/Drupal/config/Tests/DefaultConfigTest.php
@@ -0,0 +1,132 @@
+<?php
+
+/**
+ * @file
+ * Definition of Drupal\config\Tests\DefaultConfigTest.
+ */
+
+namespace Drupal\config\Tests;
+
+use Drupal\Core\Config\InstallStorage;
+use Drupal\Core\Config\Schema\Property;
+use Drupal\Core\TypedData\Type\BooleanInterface;
+use Drupal\Core\TypedData\Type\StringInterface;
+use Drupal\simpletest\DrupalUnitTestBase;
+use Drupal\simpletest\WebTestBase;
+use Drupal\Component\Utility\String;
+use Drupal\Core\Config\Schema\SchemaIncompleteException;
+use Drupal\Core\TypedData\PrimitiveInterface;
+use Drupal\Core\TypedData\Type\FloatInterface;
+use Drupal\Core\TypedData\Type\IntegerInterface;
+
+/**
+ *
+ */
+class DefaultConfigTest extends DrupalUnitTestBase {
+
+  /**
+   * The config schema wrapper object for the configuration object under test.
+   *
+   * @var \Drupal\Core\Config\Schema\Element
+   */
+  protected $schema;
+
+  /**
+   * The configuration object name under test.
+   *
+   * @var string
+   */
+  protected $configName;
+
+  /**
+   * @var boolean
+   */
+  protected $configPass;
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Default configuration',
+      'description' => 'Tests that default configuration provided by all modules matches schema.',
+      'group' => 'Configuration',
+    );
+  }
+
+  public function testDefaultConfig() {
+    /** @var \Drupal\Core\Config\TypedConfigManager $typed_config */
+    $typed_config = $this->container->get('config.typed');
+
+    $default_config_storage = new InstallStorage();
+    foreach ($default_config_storage->listAll() as $config_name) {
+      $this->configName = $config_name;
+      $data = $default_config_storage->read($config_name);
+      if (!$typed_config->hasConfigSchema($config_name)) {
+        $this->fail(String::format('No schema for !config_name', array('!config_name' => $config_name)));
+        continue;
+      }
+      $definition = $typed_config->getDefinition($config_name);
+      $this->schema = $typed_config->create($definition, $data);
+      $this->configPass = TRUE;
+      foreach ($data as $key => $value) {
+        $this->checkValue($key, $value);
+      }
+      if ($this->configPass) {
+        $this->pass(String::format('Schema found for !config_name and values comply with schema.', array('!config_name' => $config_name)));
+      }
+    }
+  }
+
+  protected function checkValue($key, $value) {
+    if (is_scalar($value) || $value === NULL) {
+      try {
+        $success = FALSE;
+        $type = gettype($value);
+        $element = $this->schema->get($key);
+        if ($element instanceof PrimitiveInterface) {
+          if ($type == 'integer' && $element instanceof IntegerInterface) {
+            $success = TRUE;
+          }
+          if ($type == 'double' && $element instanceof FloatInterface) {
+            $success = TRUE;
+          }
+          if ($type == 'boolean' && $element instanceof BooleanInterface) {
+            $success = TRUE;
+          }
+          if ($type == 'string' && ($element instanceof StringInterface || $element instanceof Property)) {
+            $success = TRUE;
+          }
+        }
+        else {
+          // Hmmm?
+        }
+        $class = get_class($element);
+        if (!$success) {
+          $this->fail("{$this->configName}:$key has the wrong schema. Variable type is $type and schema class is $class.");
+        }
+        //else {
+        //  $this->pass("{$this->configName}:$key has the correct schema. Variable type is $type and schema class is $class.");
+        //}
+
+      }
+      catch (SchemaIncompleteException $e) {
+        $this->fail("{$this->configName}:$key has no schema.");
+      }
+    }
+    else {
+      // Any non-scalar value must be an array.
+      if (!is_array($value)) {
+        $value = (array) $value;
+      }
+      // Recurse into any nested keys.
+      foreach ($value as $nested_value_key => $nested_value) {
+        $value[$nested_value_key] = $this->checkValue($key . '.' . $nested_value_key, $nested_value);
+      }
+    }
+    return $value;
+  }
+
+  protected function fail($message = NULL, $group = 'Other') {
+    $this->configPass = FALSE;
+    return parent::fail($message, $group);
+  }
+
+}
diff --git a/core/modules/views/config/schema/views.data_types.schema.yml b/core/modules/views/config/schema/views.data_types.schema.yml
index 4c10048..26d20e6 100644
--- a/core/modules/views/config/schema/views.data_types.schema.yml
+++ b/core/modules/views/config/schema/views.data_types.schema.yml
@@ -211,6 +211,9 @@ views_sort:
     plugin_id:
       type: string
       label: 'Plugin ID'
+    provider:
+      type: string
+      label: 'Provider'
 
 views_area:
   type: views_handler
diff --git a/core/modules/views/config/schema/views.schema.yml b/core/modules/views/config/schema/views.schema.yml
index 66713b5..a9a7eaf 100644
--- a/core/modules/views/config/schema/views.schema.yml
+++ b/core/modules/views/config/schema/views.schema.yml
@@ -72,12 +72,15 @@ views.view.*:
   type: mapping
   label: 'View'
   mapping:
+    langcode:
+      type: string
+      label: 'Default language'
     status:
       type: boolean
       label: 'Status'
     module:
       label: 'Module'
-    name:
+    id:
       label: 'Machine name'
     description:
       type: text
diff --git a/core/profiles/minimal/config/block.block.stark_admin.yml b/core/profiles/minimal/config/block.block.stark_admin.yml
index 1c11ab5..aeded26 100644
--- a/core/profiles/minimal/config/block.block.stark_admin.yml
+++ b/core/profiles/minimal/config/block.block.stark_admin.yml
@@ -1,7 +1,7 @@
 id: stark_admin
 theme: stark
-weight: '1'
-status: '1'
+weight: 1
+status: true
 langcode: en
 region: sidebar_first
 plugin: 'system_menu_block:admin'
@@ -9,10 +9,10 @@ settings:
   label: Administration
   module: system
   label_display: visible
-  cache: '-1'
+  cache: -1
 visibility:
   path:
-    visibility: '0'
+    visibility: 0
     pages: ''
   role:
     roles: {  }
diff --git a/core/profiles/minimal/config/block.block.stark_login.yml b/core/profiles/minimal/config/block.block.stark_login.yml
index a727ff5..7ca1d45 100644
--- a/core/profiles/minimal/config/block.block.stark_login.yml
+++ b/core/profiles/minimal/config/block.block.stark_login.yml
@@ -1,7 +1,7 @@
 id: stark_login
 theme: stark
-weight: '0'
-status: '1'
+weight: 0
+status: true
 langcode: en
 region: sidebar_first
 plugin: user_login_block
@@ -9,10 +9,10 @@ settings:
   label: 'User login'
   module: user
   label_display: visible
-  cache: '-1'
+  cache: -1
 visibility:
   path:
-    visibility: '0'
+    visibility: 0
     pages: ''
   role:
     roles: {  }
diff --git a/core/profiles/minimal/config/block.block.stark_tools.yml b/core/profiles/minimal/config/block.block.stark_tools.yml
index 6073ede..0d1fb7b 100644
--- a/core/profiles/minimal/config/block.block.stark_tools.yml
+++ b/core/profiles/minimal/config/block.block.stark_tools.yml
@@ -1,7 +1,7 @@
 id: stark_tools
 theme: stark
-weight: '0'
-status: '1'
+weight: 0
+status: true
 langcode: en
 region: sidebar_first
 plugin: 'system_menu_block:tools'
@@ -9,10 +9,10 @@ settings:
   label: Tools
   module: system
   label_display: visible
-  cache: '-1'
+  cache: -1
 visibility:
   path:
-    visibility: '0'
+    visibility: 0
     pages: ''
   role:
     roles: {  }