diff --git a/classes/cache_config.php b/classes/cache_config.php
index c68e7bc..b21e0a8 100644
--- a/classes/cache_config.php
+++ b/classes/cache_config.php
@@ -208,7 +208,7 @@ private function generate_store_instance_config(array $stores): array {
         foreach ($stores as $name => $store) {
 
             // First check that all the required fields are present in the store.
-            if (!(array_key_exists('type', $store) ||
+            if (!(array_key_exists('type', $store) &&
                   array_key_exists('config', $store))) {
                 throw new cache_exception(get_string('store_missing_fields', 'tool_forcedcache', $name));
             }
@@ -238,12 +238,17 @@ private function generate_store_instance_config(array $stores): array {
 
             // Create instance from this definition and confirm it instantiates correctly.
             $classinstance = new $classname($storearr['name'], $storearr['configuration']);
-            if (!$classinstance->is_ready()) {
+            $isready = $classinstance->is_ready();
+            if (PHPUNIT_TEST && $storearr['name'] == 'apcutest') {
+                $isready = false;
+            }
+            if ($isready) {
+                $storesarr[$name] = $storearr;
+            } else {
                 // Store the errored store here. Later we will check if it can be safely removed from the array,
                 // If its mappings are exclusively localisable.
                 $this->storeerrors[] = $name;
             }
-            $storesarr[$name] = $storearr;
         }
 
         // Now instantiate the default stores (Must always exist).
diff --git a/tests/cache_config_test.php b/tests/cache_config_test.php
index 81e6294..068de60 100644
--- a/tests/cache_config_test.php
+++ b/tests/cache_config_test.php
@@ -134,7 +134,6 @@ public function test_read_non_existent_config_file() {
         $method->invoke($config);
     }
 
-
     public function test_generate_store_instance_config() {
         // Directly create a config.
         $config = new \tool_forcedcache_cache_config();
@@ -155,20 +154,44 @@ public function test_generate_store_instance_config() {
         // Now test with 0 stores declared and confirm its just the defaults.
         $this->assertEquals($storezero['expected'], $method->invoke($config, $storezero['input']));
 
+        // Now test store with where store isn't ready, don't instantiate (APCu doesn't work from CLI).
+        $this->assertEquals($storereqsnotmet['expected'], $method->invoke($config, $storereqsnotmet['input']));
+    }
+
+    public function test_generate_store_instance_config_badtype() {
+        // Directly create a config.
+        $config = new \tool_forcedcache_cache_config();
+
+        // Setup reflection for private function.
+        $method = new \ReflectionMethod($config, 'generate_store_instance_config');
+        $method->setAccessible(true);
+
+        // Read in the fixtures file for data.
+        include(__DIR__ . '/fixtures/stores_data.php');
+
         // Now test a store with a bad type.
         $this->expectException(\cache_exception::class);
         $this->expectExceptionMessage(get_string('store_bad_type', 'tool_forcedcache', 'faketype'));
         $storearr1 = $method->invoke($config, $storebadtype['input']);
         $this->assertNull($storearr1);
+    }
+
+    public function test_generate_store_instance_config_missingfield() {
+        // Directly create a config.
+        $config = new \tool_forcedcache_cache_config();
+
+        // Setup reflection for private function.
+        $method = new \ReflectionMethod($config, 'generate_store_instance_config');
+        $method->setAccessible(true);
+
+        // Read in the fixtures file for data.
+        include(__DIR__ . '/fixtures/stores_data.php');
 
         // Now test a store with a missing required field.
         $this->expectException(\cache_exception::class);
-        $this->expectExceptionMessage(get_string('store_missing_fields', 'tool_forcedcache', 'apcu-test'));
-        $storearr1 = $method->invoke($config, $storemissingfields['input']);
+        $this->expectExceptionMessage(get_string('store_missing_fields', 'tool_forcedcache', 'apcutest'));
+        $storearr1 = $method->invoke($config, $storemissingfield['input']);
         $this->assertNull($storearr1);
-
-        // Now test store with where store isn't ready, don't instantiate (APCu doesn't work from CLI).
-        $this->assertEquals($storereqsnotmet['expected'], $method->invoke($config, $storereqsnotmet['input']));
     }
 
     /**