refactor

tests/ShaderPackageRegistryTests.cpp

@@ -0,0 +1,129 @@
+#include "ShaderPackageRegistry.h"
+
+#include <chrono>
+#include <filesystem>
+#include <fstream>
+#include <iostream>
+#include <map>
+#include <string>
+#include <vector>
+
+namespace
+{
+int gFailures = 0;
+
+void Expect(bool condition, const char* message)
+{
+	if (condition)
+		return;
+
+	std::cerr << "FAIL: " << message << "\n";
+	++gFailures;
+}
+
+std::filesystem::path MakeTestRoot()
+{
+	const auto stamp = std::chrono::steady_clock::now().time_since_epoch().count();
+	std::filesystem::path root = std::filesystem::temp_directory_path() / ("video-shader-registry-tests-" + std::to_string(stamp));
+	std::filesystem::create_directories(root);
+	return root;
+}
+
+void WriteFile(const std::filesystem::path& path, const std::string& contents)
+{
+	std::filesystem::create_directories(path.parent_path());
+	std::ofstream output(path, std::ios::binary);
+	output << contents;
+}
+
+void WriteShaderPackage(const std::filesystem::path& root, const std::string& directoryName, const std::string& manifest)
+{
+	const std::filesystem::path packageRoot = root / directoryName;
+	WriteFile(packageRoot / "shader.json", manifest);
+	WriteFile(packageRoot / "shader.slang", "float4 shadeVideo(float2 uv) { return float4(uv, 0.0, 1.0); }\n");
+}
+
+void TestValidManifest()
+{
+	const std::filesystem::path root = MakeTestRoot();
+	WriteFile(root / "look" / "mask.png", "not a real png, but enough for existence checks");
+	WriteShaderPackage(root, "look", R"({
+		"id": "look-01",
+		"name": "Look 01",
+		"description": "Test package",
+		"category": "Tests",
+		"entryPoint": "shadeVideo",
+		"textures": [{ "id": "maskTex", "path": "mask.png" }],
+		"temporal": { "enabled": true, "historySource": "source", "historyLength": 8 },
+		"parameters": [
+			{ "id": "gain", "label": "Gain", "type": "float", "default": 0.5, "min": 0, "max": 1 },
+			{ "id": "mode", "label": "Mode", "type": "enum", "default": "soft", "options": [
+				{ "value": "soft", "label": "Soft" },
+				{ "value": "hard", "label": "Hard" }
+			] }
+		]
+	})");
+
+	ShaderPackageRegistry registry(4);
+	ShaderPackage package;
+	std::string error;
+	Expect(registry.ParseManifest(root / "look" / "shader.json", package, error), "valid manifest parses");
+	Expect(package.id == "look-01", "manifest id is preserved");
+	Expect(package.textureAssets.size() == 1 && package.textureAssets[0].id == "maskTex", "texture assets parse");
+	Expect(package.temporal.enabled && package.temporal.effectiveHistoryLength == 4, "temporal history is capped");
+	Expect(package.parameters.size() == 2, "parameters parse");
+
+	std::filesystem::remove_all(root);
+}
+
+void TestInvalidManifest()
+{
+	const std::filesystem::path root = MakeTestRoot();
+	WriteShaderPackage(root, "bad", R"({
+		"id": "bad",
+		"name": "Bad",
+		"entryPoint": "not-valid!",
+		"parameters": []
+	})");
+
+	ShaderPackageRegistry registry(4);
+	ShaderPackage package;
+	std::string error;
+	Expect(!registry.ParseManifest(root / "bad" / "shader.json", package, error), "invalid shader identifier is rejected");
+	Expect(error.find("entryPoint") != std::string::npos, "invalid manifest error names the bad field");
+
+	std::filesystem::remove_all(root);
+}
+
+void TestDuplicateScan()
+{
+	const std::filesystem::path root = MakeTestRoot();
+	WriteShaderPackage(root, "a", R"({ "id": "dupe", "name": "A", "parameters": [] })");
+	WriteShaderPackage(root, "b", R"({ "id": "dupe", "name": "B", "parameters": [] })");
+
+	ShaderPackageRegistry registry(4);
+	std::map<std::string, ShaderPackage> packages;
+	std::vector<std::string> order;
+	std::string error;
+	Expect(!registry.Scan(root, packages, order, error), "duplicate package ids are rejected");
+	Expect(error.find("Duplicate shader id") != std::string::npos, "duplicate scan error is clear");
+
+	std::filesystem::remove_all(root);
+}
+}
+
+int main()
+{
+	TestValidManifest();
+	TestInvalidManifest();
+	TestDuplicateScan();
+
+	if (gFailures != 0)
+	{
+		std::cerr << gFailures << " ShaderPackageRegistry test failure(s).\n";
+		return 1;
+	}
+
+	std::cout << "ShaderPackageRegistry tests passed.\n";
+	return 0;
+}