tests: Test IPA serializer generation

Add a test to confirm that serializer and header generation works
properly for mojom definition files, and that the serializer works
properly.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

test/serialization/generated_serializer/generated_serializer_test.cpp

@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * generated_serializer_test.cpp - Test generated serializer
+ */
+
+#include <algorithm>
+#include <tuple>
+#include <vector>
+
+#include "test.h"
+
+#include "test_ipa_interface.h"
+#include "test_ipa_serializer.h"
+
+using namespace std;
+using namespace libcamera;
+
+class IPAGeneratedSerializerTest : public Test
+{
+protected:
+	int init() override
+	{
+		return TestPass;
+	}
+
+	int run() override
+	{
+
+#define TEST_FIELD_EQUALITY(struct1, struct2, field)		\
+if (struct1.field != struct2.field) {				\
+	cerr << #field << " field incorrect: expected \""	\
+	     << t.field << "\", got \"" << u.field << "\"" << endl;\
+	return TestFail;					\
+}
+
+		ipa::test::TestStruct t, u;
+
+		t.m = {
+			{ "a", "z" },
+			{ "b", "z" },
+			{ "c", "z" },
+			{ "d", "z" },
+			{ "e", "z" },
+		};
+
+		t.a = { "a", "b", "c", "d", "e" };
+
+		t.s1 = "hello world";
+		t.s2 = "goodbye";
+		t.s3 = "lorem ipsum";
+		t.i  = 58527;
+
+		std::vector<uint8_t> serialized;
+
+		std::tie(serialized, ignore) =
+			IPADataSerializer<ipa::test::TestStruct>::serialize(t);
+
+		u = IPADataSerializer<ipa::test::TestStruct>::deserialize(serialized);
+
+		if (!equals(t.m, u.m))
+			return TestFail;
+
+		if (!equals(t.a, u.a))
+			return TestFail;
+
+		TEST_FIELD_EQUALITY(t, u, s1);
+		TEST_FIELD_EQUALITY(t, u, s2);
+		TEST_FIELD_EQUALITY(t, u, s3);
+		TEST_FIELD_EQUALITY(t, u, i);
+
+
+		/* Test vector of generated structs */
+		std::vector<ipa::test::TestStruct> v = { t, u };
+		std::vector<ipa::test::TestStruct> w;
+
+		std::tie(serialized, ignore) =
+			IPADataSerializer<vector<ipa::test::TestStruct>>::serialize(v);
+
+		w = IPADataSerializer<vector<ipa::test::TestStruct>>::deserialize(serialized);
+
+		if (!equals(v[0].m, w[0].m) ||
+		    !equals(v[1].m, w[1].m))
+			return TestFail;
+
+		if (!equals(v[0].a, w[0].a) ||
+		    !equals(v[1].a, w[1].a))
+			return TestFail;
+
+		TEST_FIELD_EQUALITY(v[0], w[0], s1);
+		TEST_FIELD_EQUALITY(v[0], w[0], s2);
+		TEST_FIELD_EQUALITY(v[0], w[0], s3);
+		TEST_FIELD_EQUALITY(v[0], w[0], i);
+
+		TEST_FIELD_EQUALITY(v[1], w[1], s1);
+		TEST_FIELD_EQUALITY(v[1], w[1], s2);
+		TEST_FIELD_EQUALITY(v[1], w[1], s3);
+		TEST_FIELD_EQUALITY(v[1], w[1], i);
+
+		return TestPass;
+	}
+
+private:
+	bool equals(const map<string, string> &lhs, const map<string, string> &rhs)
+	{
+		bool eq = lhs.size() == rhs.size() &&
+			  equal(lhs.begin(), lhs.end(), rhs.begin(),
+				[](auto &a, auto &b) { return a.first == b.first &&
+							      a.second == b.second; });
+
+		if (eq)
+			return true;
+
+		cerr << "lhs:" << endl;
+		for (const auto &pair : lhs)
+			cerr << "- " << pair.first << ": "
+			     << pair.second << endl;
+
+		cerr << "rhs:" << endl;
+		for (const auto &pair : rhs)
+			cerr << "- " << pair.first << ": "
+			     << pair.second << endl;
+
+		return false;
+	}
+
+	bool equals(const vector<string> &lhs, const vector<string> &rhs)
+	{
+		bool eq = lhs.size() == rhs.size();
+
+		if (!eq) {
+			cerr << "sizes not equal" << endl;
+			return false;
+		}
+
+		for (unsigned int i = 0; i < lhs.size(); i++)
+			if (lhs[i] != rhs[i])
+				eq = false;
+
+		if (eq)
+			return true;
+
+		cerr << "lhs:" << endl;
+		for (const auto &str : lhs)
+			cerr << "- " << str << endl;
+
+		cerr << "rhs:" << endl;
+		for (const auto &str : rhs)
+			cerr << "- " << str << endl;
+
+		return false;
+	}
+};
+
+TEST_REGISTER(IPAGeneratedSerializerTest)

test/serialization/generated_serializer/include/libcamera/ipa/meson.build

@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: CC0-1.0
+
+# test.mojom-module
+mojom = custom_target('test_mojom_module',
+                      input : 'test.mojom',
+                      output : 'test.mojom-module',
+                      command : [
+                          mojom_parser,
+                          '--output-root', meson.build_root(),
+                          '--input-root', meson.source_root(),
+                          '--mojoms', '@INPUT@'
+                      ])
+
+# test_ipa_interface.h
+generated_test_header = custom_target('test_ipa_interface_h',
+                       input : mojom,
+                       output : 'test_ipa_interface.h',
+                       depends : mojom_templates,
+                       command : [
+                           mojom_generator, 'generate',
+                           '-g', 'libcamera',
+                           '--bytecode_path', mojom_templates_dir,
+                           '--libcamera_generate_header',
+                           '--libcamera_output_path=@OUTPUT@',
+                           './' +'@INPUT@'
+                       ])
+
+# test_ipa_serializer.h
+generated_test_serializer = custom_target('test_ipa_serializer_h',
+                           input : mojom,
+                           output : 'test_ipa_serializer.h',
+                           depends : mojom_templates,
+                           command : [
+                               mojom_generator, 'generate',
+                               '-g', 'libcamera',
+                               '--bytecode_path', mojom_templates_dir,
+                               '--libcamera_generate_serializer',
+                               '--libcamera_output_path=@OUTPUT@',
+                               './' +'@INPUT@'
+                           ])

test/serialization/generated_serializer/include/libcamera/ipa/test.mojom

@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+module ipa.test;
+
+enum IPAOperationCode {
+	IPAOperationNone,
+	IPAOperationInit,
+	IPAOperationStart,
+	IPAOperationStop,
+};
+
+struct IPASettings {};
+
+struct TestStruct {
+	map<string, string> m;
+	array<string> a;
+	string s1;
+	string s2;
+	int32 i;
+	string s3;
+};
+
+interface IPATestInterface {
+	init(IPASettings settings) => (int32 ret);
+	start() => (int32 ret);
+	stop();
+
+	test(TestStruct s);
+};
+
+interface IPATestEventInterface {
+	dummyEvent(uint32 val);
+};

test/serialization/generated_serializer/meson.build

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: CC0-1.0
+
+subdir('include/libcamera/ipa')
+
+exe = executable('generated_serializer_test',
+                 [
+                     'generated_serializer_test.cpp',
+                     generated_test_header,
+                     generated_test_serializer,
+                 ],
+                 dependencies : libcamera_dep,
+                 link_with : test_libraries,
+                 include_directories : [
+                     test_includes_internal,
+                     './include',
+                 ])
+
+test('generated_serializer_test', exe,
+     suite : 'generated_serializer', is_parallel : false)

test/serialization/meson.build

@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: CC0-1.0
 
+subdir('generated_serializer')
+
 serialization_tests = [
     ['control_serialization',     'control_serialization.cpp'],
     ['ipa_data_serializer_test',  'ipa_data_serializer_test.cpp'],