diff --git a/CMakeLists.txt b/CMakeLists.txt
index 85134277..8adf47d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -569,6 +569,8 @@ if(WITH_TESTS)
   add_executable(dwarfs_utils_test test/utils_test.cpp)
   add_executable(dwarfs_pcm_sample_transformer_test
           test/pcm_sample_transformer_test.cpp)
+  add_executable(dwarfs_pcmaudio_categorizer_test
+          test/pcmaudio_categorizer_test.cpp)
 
   target_link_libraries(dwarfs_test test_helpers gtest gtest_main)
   target_link_libraries(dwarfs_compat_test gtest gtest_main)
@@ -576,9 +578,12 @@ if(WITH_TESTS)
   target_link_libraries(dwarfs_tools_test test_helpers gtest gtest_main)
   target_link_libraries(dwarfs_utils_test gtest gtest_main)
   target_link_libraries(dwarfs_pcm_sample_transformer_test gtest gtest_main)
+  target_link_libraries(dwarfs_pcmaudio_categorizer_test gtest gtest_main gmock_main
+                        "$<LINK_LIBRARY:WHOLE_ARCHIVE,dwarfs_categorizer>")
 
   list(APPEND BINARY_TARGETS dwarfs_test dwarfs_compat_test dwarfs_badfs_test
-       dwarfs_tools_test dwarfs_utils_test dwarfs_pcm_sample_transformer_test)
+       dwarfs_tools_test dwarfs_utils_test dwarfs_pcm_sample_transformer_test
+       dwarfs_pcmaudio_categorizer_test)
 
   gtest_discover_tests(dwarfs_test DISCOVERY_TIMEOUT 120)
   gtest_discover_tests(dwarfs_compat_test DISCOVERY_TIMEOUT 120)
@@ -586,6 +591,7 @@ if(WITH_TESTS)
   gtest_discover_tests(dwarfs_tools_test DISCOVERY_TIMEOUT 120)
   gtest_discover_tests(dwarfs_utils_test DISCOVERY_TIMEOUT 120)
   gtest_discover_tests(dwarfs_pcm_sample_transformer_test DISCOVERY_TIMEOUT 120)
+  gtest_discover_tests(dwarfs_pcmaudio_categorizer_test DISCOVERY_TIMEOUT 120)
 
   if(FLAC_FOUND)
     add_executable(dwarfs_flac_compressor_test test/flac_compressor_test.cpp)
@@ -600,6 +606,9 @@ if(WITH_TESTS)
   target_compile_definitions(dwarfs_badfs_test
                              PRIVATE TEST_DATA_DIR=\"${CMAKE_SOURCE_DIR}/test\")
 
+  target_compile_definitions(dwarfs_pcmaudio_categorizer_test
+                             PRIVATE TEST_DATA_DIR=\"${CMAKE_SOURCE_DIR}/test\")
+
   target_compile_definitions(
     dwarfs_tools_test
     PRIVATE TEST_DATA_DIR=\"${CMAKE_SOURCE_DIR}/test\"
diff --git a/test/pcmaudio_categorizer_test.cpp b/test/pcmaudio_categorizer_test.cpp
new file mode 100644
index 00000000..c2f1d882
--- /dev/null
+++ b/test/pcmaudio_categorizer_test.cpp
@@ -0,0 +1,122 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/**
+ * \author     Marcus Holland-Moritz (github@mhxnet.de)
+ * \copyright  Copyright (c) Marcus Holland-Moritz
+ *
+ * This file is part of dwarfs.
+ *
+ * dwarfs is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * dwarfs is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with dwarfs.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <exception>
+#include <filesystem>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <boost/program_options.hpp>
+
+#include <folly/String.h>
+
+#include "dwarfs/categorizer.h"
+#include "dwarfs/mmap.h"
+
+#include "test_logger.h"
+
+using namespace dwarfs;
+using testing::MatchesRegex;
+
+namespace fs = std::filesystem;
+
+auto test_dir = fs::path(TEST_DATA_DIR);
+
+TEST(pcmaudio_categorizer, requirements) {
+  test::test_logger logger(logger::INFO);
+  boost::program_options::variables_map vm;
+  auto& catreg = categorizer_registry::instance();
+  auto catmgr = categorizer_manager(logger);
+
+  catmgr.add(catreg.create(logger, "pcmaudio", vm));
+
+  try {
+    catmgr.set_metadata_requirements(
+        catmgr.category_value("pcmaudio/metadata").value(),
+        R"({"endianness": ["set", ["big"]], "bytes_per_sample": ["range", 2, 3]})");
+    FAIL() << "expected std::runtime_error";
+  } catch (std::runtime_error const& e) {
+    EXPECT_STREQ(
+        "unsupported metadata requirements: bytes_per_sample, endianness",
+        e.what());
+  } catch (...) {
+    FAIL() << "unexpected exception: "
+           << folly::exceptionStr(std::current_exception());
+  }
+
+  catmgr.set_metadata_requirements(
+      catmgr.category_value("pcmaudio/waveform").value(),
+      R"({"endianness": ["set", ["mixed"]], "bytes_per_sample": ["range", 2, 3]})");
+
+  auto wav = test_dir / "pcmaudio" / "test16.wav";
+  auto mm = mmap(wav);
+
+  {
+    auto job = catmgr.job(wav);
+    job.set_total_size(mm.size());
+
+    EXPECT_TRUE(logger.empty());
+
+    job.categorize_random_access(mm.span());
+    auto frag = job.result();
+
+    ASSERT_EQ(1, logger.get_log().size());
+    auto const& ent = logger.get_log().front();
+    EXPECT_EQ(logger::WARN, ent.level);
+    EXPECT_THAT(
+        ent.output,
+        MatchesRegex(
+            R"(^\[WAV\] ".*": endianness 'little' does not meet requirements$)"));
+
+    EXPECT_TRUE(frag.empty());
+
+    logger.clear();
+  }
+
+  catmgr.set_metadata_requirements(
+      catmgr.category_value("pcmaudio/waveform").value(),
+      R"({"endianness": ["set", ["big", "little"]], "bytes_per_sample": ["range", 1, 4]})");
+
+  {
+    auto job = catmgr.job(wav);
+    job.set_total_size(mm.size());
+
+    EXPECT_TRUE(logger.empty());
+
+    job.categorize_random_access(mm.span());
+    auto frag = job.result();
+
+    EXPECT_TRUE(logger.empty());
+
+    EXPECT_EQ(2, frag.size());
+
+    auto const& first = frag.span()[0];
+    auto const& second = frag.span()[1];
+    EXPECT_EQ("pcmaudio/metadata",
+              catmgr.category_name(first.category().value()));
+    EXPECT_EQ(44, first.size());
+    EXPECT_EQ("pcmaudio/waveform",
+              catmgr.category_name(second.category().value()));
+    EXPECT_EQ(14, second.size());
+    EXPECT_EQ(mm.size(), first.size() + second.size());
+  }
+}