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>

1 files changed, 156 insertions, 0 deletions

diff --git a/test/serialization/generated_serializer/generated_serializer_test.cpp b/test/serialization/generated_serializer/generated_serializer_test.cpp
new file mode 100644
index 00000000..698c81d6
--- /dev/null
+++ b/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)