Use ICANBOOGIE_CLDR_MODE to run test in static mode (no web calls)

lib/Provider/FailingProvider.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace ICanBoogie\CLDR\Provider;
+
+use ICanBoogie\CLDR\Provider;
+use RuntimeException;
+
+/**
+ * A {@see Provider} that fails to provide any path.
+ *
+ * This provider is useful when you want to restrict the usage of the repository to warmed up data.
+ */
+final class FailingProvider implements Provider
+{
+	public function provide(string $path): array
+	{
+		throw new RuntimeException("Only warmed up data is available, tried to read from: $path");
+	}
+}

tests/bootstrap.php

@@ -16,6 +16,7 @@
 use ICanBoogie\CLDR\Cache\RedisCache;
 use ICanBoogie\CLDR\Cache\RuntimeCache;
 use ICanBoogie\CLDR\Provider\CachedProvider;
+use ICanBoogie\CLDR\Provider\FailingProvider;
 use ICanBoogie\CLDR\Provider\WebProvider;
 use Redis;
 
@@ -37,6 +38,15 @@ function create_provider(): Provider
 		return $provider;
 	}
 
+	if (getenv('ICANBOOGIE_CLDR_MODE') === 'static') {
+		echo "*** RUNNING TESTS IN STATIC MODE\n";
+
+		return $provider = new CachedProvider(
+			new FailingProvider(),
+			new FileCache(CACHE_DIR),
+		);
+	}
+
 	$redis = new Redis();
 	$host = getenv('ICANBOOGIE_CLDR_REDIS_HOST');
 	$port = getenv('ICANBOOGIE_CLDR_REDIS_PORT');