5 files changed, 52 insertions, 0 deletions
diff --git a/test/meson.build b/test/meson.build
index fd8586a8..489a6ee5 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -18,6 +18,7 @@ simple_script_paths = [
   'run_suite.py',
   'test_base.py',
   'test_empty.py',
+  'test_multifile.py',
   'test_quiet.py',
   'test_stdin.py',
   'test_write_error.py',
@@ -275,6 +276,13 @@ if is_variable('serd_pipe')
     env: test_env,
     suite: input_suite,
   )
+  test(
+    'multifile',
+    files('test_multifile.py'),
+    args: pipe_script_args + [meson.current_source_dir() / 'multifile'],
+    env: test_env,
+    suite: input_suite,
+  )
 
   # Output
 
diff --git a/test/multifile/input1.ttl b/test/multifile/input1.ttl
new file mode 100644
index 00000000..88c3f8e9
--- /dev/null
+++ b/test/multifile/input1.ttl
@@ -0,0 +1,2 @@
+[]
+	a <http://example.org/Type> .
diff --git a/test/multifile/input2.trig b/test/multifile/input2.trig
new file mode 100644
index 00000000..260080a8
--- /dev/null
+++ b/test/multifile/input2.trig
@@ -0,0 +1,7 @@
+[]
+	a <http://example.org/Type> .
+
+<http://example.org/graph> {
+	[]
+		a <http://example.org/OtherType> .
+}
diff --git a/test/multifile/output.nq b/test/multifile/output.nq
new file mode 100644
index 00000000..dd35dc4d
--- /dev/null
+++ b/test/multifile/output.nq
@@ -0,0 +1,3 @@
+_:f0b1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/Type> .
+_:f1b1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/Type> .
+_:f1b2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/OtherType> <http://example.org/graph> .
diff --git a/test/test_multifile.py b/test/test_multifile.py
new file mode 100755
index 00000000..e8fa0775
--- /dev/null
+++ b/test/test_multifile.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+# Copyright 2019-2023 David Robillard <d@drobilla.net>
+# SPDX-License-Identifier: ISC
+
+"""Test reading from several input files."""
+
+# pylint: disable=duplicate-code
+
+import os
+import shlex
+import subprocess
+import tempfile
+
+import serd_test_util as util
+
+args = util.wrapper_args(__doc__, True)
+testdir = args.input
+in1_path = os.path.join(testdir, "input1.ttl")
+in2_path = os.path.join(testdir, "input2.trig")
+check_path = os.path.join(testdir, "output.nq")
+command = shlex.split(args.wrapper) + [args.tool, in1_path, in2_path]
+
+
+with tempfile.TemporaryFile(mode="w+", encoding="utf-8") as out:
+    proc = subprocess.run(command, check=False, stdout=out)
+
+    assert proc.returncode == 0
+
+    out.seek(0)
+    with open(check_path, "r", encoding="utf-8") as check:
+        assert util.lines_equal(list(check), list(out), check_path, "output")