Add File test.

Author: ioquatix

test/file.rb

@@ -0,0 +1,22 @@
+require "async"
+require "securerandom"
+require "tmpdir"
+require "sus/fixtures/temporary_directory_context"
+require "sus/fixtures/async/scheduler_context"
+
+describe File do
+	include Sus::Fixtures::TemporaryDirectoryContext
+	include Sus::Fixtures::Async::SchedulerContext
+	
+	let(:path) {File.join(root, "test.txt")}
+	
+	describe "#flush" do
+		it "flushes the file's contents to disk" do
+			File.open(path, 'w+') do |file|
+				file << "Hello World!"
+			end
+			
+			expect(File.read(path)).to be == "Hello World!"
+		end
+	end
+end