diff --git a/ql/test/library-tests/frameworks/Files.expected b/ql/test/library-tests/frameworks/Files.expected
new file mode 100644
index 00000000000..93714d13c43
--- /dev/null
+++ b/ql/test/library-tests/frameworks/Files.expected
@@ -0,0 +1,58 @@
+fileInstances
+| Files.rb:2:1:2:30 | ... = ... |
+| Files.rb:2:1:2:30 | ... = ... |
+| Files.rb:2:12:2:30 | call to new |
+| Files.rb:3:1:3:21 | ... = ... |
+| Files.rb:3:1:3:21 | ... = ... |
+| Files.rb:3:14:3:21 | foo_file |
+| Files.rb:4:1:4:8 | foo_file |
+| Files.rb:7:13:7:22 | foo_file_2 |
+| Files.rb:10:6:10:13 | foo_file |
+| Files.rb:11:6:11:13 | foo_file |
+| Files.rb:23:1:23:33 | ... = ... |
+| Files.rb:23:19:23:33 | call to open |
+| Files.rb:24:1:24:40 | ... = ... |
+| Files.rb:24:19:24:40 | call to open |
+ioInstances
+| Files.rb:2:1:2:30 | ... = ... |
+| Files.rb:2:1:2:30 | ... = ... |
+| Files.rb:2:12:2:30 | call to new |
+| Files.rb:3:1:3:21 | ... = ... |
+| Files.rb:3:1:3:21 | ... = ... |
+| Files.rb:3:14:3:21 | foo_file |
+| Files.rb:4:1:4:8 | foo_file |
+| Files.rb:7:13:7:22 | foo_file_2 |
+| Files.rb:10:6:10:13 | foo_file |
+| Files.rb:11:6:11:13 | foo_file |
+| Files.rb:17:1:17:50 | ... = ... |
+| Files.rb:17:1:17:50 | ... = ... |
+| Files.rb:17:8:17:50 | call to new |
+| Files.rb:18:1:18:13 | ... = ... |
+| Files.rb:18:10:18:13 | rand |
+| Files.rb:20:13:20:16 | rand |
+| Files.rb:23:1:23:33 | ... = ... |
+| Files.rb:23:19:23:33 | call to open |
+| Files.rb:24:1:24:40 | ... = ... |
+| Files.rb:24:19:24:40 | call to open |
+fileReaders
+| Files.rb:7:13:7:32 | call to readlines |
+ioReaders
+| Files.rb:7:13:7:32 | call to readlines | File |
+| Files.rb:20:13:20:25 | call to read | IO |
+| Files.rb:29:12:29:29 | call to read | IO |
+| Files.rb:32:8:32:23 | call to read | IO |
+ioFileReaders
+| Files.rb:7:13:7:32 | call to readlines | File |
+| Files.rb:29:12:29:29 | call to read | IO |
+fileModuleFilenameSources
+| Files.rb:10:6:10:18 | call to path |
+| Files.rb:11:6:11:21 | call to to_path |
+fileUtilsFilenameSources
+| Files.rb:14:8:14:43 | call to makedirs |
+fileSystemReadAccesses
+| Files.rb:7:13:7:32 | call to readlines |
+| Files.rb:29:12:29:29 | call to read |
+fileNameSources
+| Files.rb:10:6:10:18 | call to path |
+| Files.rb:11:6:11:21 | call to to_path |
+| Files.rb:14:8:14:43 | call to makedirs |
diff --git a/ql/test/library-tests/frameworks/Files.ql b/ql/test/library-tests/frameworks/Files.ql
new file mode 100644
index 00000000000..fc2fffe9216
--- /dev/null
+++ b/ql/test/library-tests/frameworks/Files.ql
@@ -0,0 +1,21 @@
+private import ruby
+private import codeql.ruby.frameworks.Files
+private import codeql.ruby.Concepts
+
+query predicate fileInstances(File::FileInstance i) { any() }
+
+query predicate ioInstances(IO::IOInstance i) { any() }
+
+query predicate fileReaders(File::FileModuleReader r) { any() }
+
+query predicate ioReaders(IO::IOReader r, string api) { api = r.getAPI() }
+
+query predicate ioFileReaders(IO::IOFileReader r, string api) { api = r.getAPI() }
+
+query predicate fileModuleFilenameSources(File::FileModuleFilenameSource s) { any() }
+
+query predicate fileUtilsFilenameSources(FileUtils::FileUtilsFilenameSource s) { any() }
+
+query predicate fileSystemReadAccesses(FileSystemReadAccess a) { any() }
+
+query predicate fileNameSources(FileNameSource s) { any() }
diff --git a/ql/test/library-tests/frameworks/Files.rb b/ql/test/library-tests/frameworks/Files.rb
new file mode 100644
index 00000000000..21ff3b6440a
--- /dev/null
+++ b/ql/test/library-tests/frameworks/Files.rb
@@ -0,0 +1,32 @@
+# `foo_file` is a `File` instance
+foo_file = File.new("foo.txt")
+foo_file_2 = foo_file
+foo_file
+
+# File read access
+foo_lines = foo_file_2.readlines
+
+# `fp` is a file path
+fp = foo_file.path
+fp = foo_file.to_path
+
+# `FileUtils.makedirs` returns an array of file names
+dirs = FileUtils.makedirs(["dir1", "dir2"])
+
+# `rand` is an `IO` instance
+rand = IO.new(IO.sysopen("/dev/random", "r"), "r")
+rand_2 = rand
+
+rand_data = rand.read(32)
+
+# `foo_file_kernel` is a `File` instance
+foo_file_kernel = open("foo.txt")
+foo_file_kernel = Kernel.open("foo.txt")
+
+foo_command_kernel = open("|ls")
+
+# `IO.read("foo.txt")` reads from a file
+foo_text = IO.read("foo.txt")
+
+# `IO.read("|date")` does not read from a file
+date = IO.read("|date")