From 9479c71a07d2f6dd63ba7ac474eeb448dfc39944 Mon Sep 17 00:00:00 2001
From: Charles Giessen <charles@lunarg.com>
Date: Wed, 20 Nov 2024 16:35:28 -0600
Subject: [PATCH] Add settings file test to compare VK_LOADER_DEBUG with
 stderr_log

These two should be identical with each other.
---
 tests/loader_settings_tests.cpp | 55 +++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/tests/loader_settings_tests.cpp b/tests/loader_settings_tests.cpp
index 2dded90ca..d69da2ecc 100644
--- a/tests/loader_settings_tests.cpp
+++ b/tests/loader_settings_tests.cpp
@@ -2987,3 +2987,58 @@ TEST(SettingsFile, EnvVarsWorkTogether) {
         EXPECT_TRUE(string_eq(layers.at(2).layerName, add_env_var_implicit_layer));
     }
 }
+
+TEST(SettingsFile, VkLoaderDebugAndSettingsFileLogAreIdentical) {
+    FrameworkEnvironment env{};
+    env.add_icd(TestICDDetails(TEST_ICD_PATH_VERSION_2)).add_physical_device({});
+
+    const char* regular_explicit_layer = "VK_LAYER_regular_explicit_layer";
+    env.add_explicit_layer(TestLayerDetails{
+        ManifestLayer{}.add_layer(
+            ManifestLayer::LayerDescription{}.set_name(regular_explicit_layer).set_lib_path(TEST_LAYER_PATH_EXPORT_VERSION_2)),
+        "regular_explicit_layer.json"});
+    const char* regular_implicit_layer = "VK_LAYER_regular_implicit_layer";
+    env.add_implicit_layer(TestLayerDetails{ManifestLayer{}.add_layer(ManifestLayer::LayerDescription{}
+                                                                          .set_disable_environment("A")
+                                                                          .set_name(regular_implicit_layer)
+                                                                          .set_lib_path(TEST_LAYER_PATH_EXPORT_VERSION_2)),
+                                            "regular_implicit_layer.json"});
+
+    env.loader_settings.set_file_format_version({1, 0, 0}).add_app_specific_setting(
+        AppSpecificSettings{}
+            .add_stderr_log_filter("all")
+            .add_layer_configuration(LoaderSettingsLayerConfiguration{}
+                                         .set_name(regular_implicit_layer)
+                                         .set_path(env.get_shimmed_layer_manifest_path(1))
+                                         .set_control("auto")
+                                         .set_treat_as_implicit_manifest(true))
+            .add_layer_configuration(LoaderSettingsLayerConfiguration{}
+                                         .set_name(regular_explicit_layer)
+                                         .set_path(env.get_shimmed_layer_manifest_path(0))
+                                         .set_control("auto"))
+            .add_layer_configuration(LoaderSettingsLayerConfiguration{}.set_control("unordered_layer_location")));
+    env.update_loader_settings(env.loader_settings);
+    std::string settings_file_log;
+    std::string env_var_log;
+    env.platform_shim->clear_logs();
+    {
+        InstWrapper inst{env.vulkan_functions};
+        inst.CheckCreate();
+        settings_file_log = env.platform_shim->fputs_stderr_log;
+    }
+    env.platform_shim->clear_logs();
+    env.loader_settings.app_specific_settings.at(0).stderr_log.clear();
+    env.update_loader_settings(env.loader_settings);
+    {  // Now use the VK_LOADER_DEBUG=all which was set at startup
+        InstWrapper inst{env.vulkan_functions};
+        inst.CheckCreate();
+
+        env_var_log = env.platform_shim->fputs_stderr_log;
+    }
+    // Because of the way the test is written, we need to remove the *one* difference between the two outputs
+    std::string expected_diff =
+        "DEBUG:             Loader Settings Filters for Logging to Standard Error: ERROR | WARNING | INFO | DEBUG | PERF | DRIVER "
+        "| LAYER\n";
+    settings_file_log.erase(settings_file_log.find(expected_diff), expected_diff.size());
+    ASSERT_EQ(settings_file_log, env_var_log);
+}