test(spectool): Add end-to-end test for analysis tool

Adds a new CTest unit test that performs a full, end-to-end verification of the 'spectool analyze' command.

The test programmatically generates a sine wave, saves it as a .wav file, executes the spectool executable as a subprocess to analyze the wave, and then verifies the integrity of the resulting .spec file.

This ensures the analysis pipeline (WAV decoding, windowing, FDCT, and file I/O) works correctly.

1 files changed, 15 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7828ada..5f1167f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -58,6 +58,21 @@ if(DEMO_BUILD_TESTS)
         src
     )
     add_test(NAME SynthEngineTest COMMAND test_synth)
+
+    add_executable(test_spectool
+        src/tests/test_spectool.cpp
+        src/audio/audio.cpp # For miniaudio implementation
+        src/audio/window.cpp
+        src/audio/fdct.cpp
+        src/audio/synth.cpp
+        src/audio/idct.cpp
+    )
+    target_include_directories(test_spectool PRIVATE
+        src
+        third_party
+    )
+    add_dependencies(test_spectool spectool)
+    add_test(NAME SpectoolEndToEndTest COMMAND test_spectool)
 endif()
 
 option(DEMO_BUILD_TOOLS "Build tools" OFF)