parameters import/export test

src/include/unit_test.h

@@ -161,7 +161,7 @@ protected:
 /// since it will give you better error reporting of the actual values being compared.
 #define ut_compare_float(message, v1, v2, precision)						\
 	do {											\
-		int _p = pow(10.0f, precision);							\
+		int _p = powf(10.0f, precision);							\
 		int _v1 = (int)(v1 * _p + 0.5f);						\
 		int _v2 = (int)(v2 * _p + 0.5f);						\
 		if (_v1 != _v2) {								\

src/systemcmds/tests/params.c

@@ -41,6 +41,11 @@ PARAM_DEFINE_INT32(TEST_1, 2);
  */
 PARAM_DEFINE_INT32(TEST_2, 4);
 
+/**
+ * @group Testing
+ */
+PARAM_DEFINE_FLOAT(TEST_3, 5.0f);
+
 /**
  * @group Testing
  */

src/systemcmds/tests/test_parameters.cpp

 #include <unit_test.h>
 
+#include <px4_defines.h>
+#include <fcntl.h>
+
 class ParameterTest : public UnitTest
 {
 public:
@@ -11,6 +14,7 @@ public:
 		p1 = param_find("TEST_RC2_X");
 		p2 = param_find("TEST_1");
 		p3 = param_find("TEST_2");
+		p4 = param_find("TEST_3");
 	}
 
 private:
@@ -19,16 +23,25 @@ private:
 	param_t p1{PARAM_INVALID};
 	param_t p2{PARAM_INVALID};
 	param_t p3{PARAM_INVALID};
+	param_t p4{PARAM_INVALID};
 
 	bool _assert_parameter_int_value(param_t param, int32_t expected);
+	bool _assert_parameter_float_value(param_t param, float expected);
+
 	bool _set_all_int_parameters_to(int32_t value);
 
+	// tests on the test parameters (TEST_RC_X, TEST_RC2_X, TEST_1, TEST_2, TEST_3)
 	bool SimpleFind();
 	bool ResetAll();
 	bool ResetAllExcludesOne();
 	bool ResetAllExcludesTwo();
 	bool ResetAllExcludesBoundaryCheck();
 	bool ResetAllExcludesWildcard();
+	bool exportImport();
+
+	// tests on system parameters
+	// WARNING, can potentially trash your system
+	bool exportImportAll();
 };
 
 bool ParameterTest::_assert_parameter_int_value(param_t param, int32_t expected)
@@ -41,6 +54,16 @@ bool ParameterTest::_assert_parameter_int_value(param_t param, int32_t expected)
 	return true;
 }
 
+bool ParameterTest::_assert_parameter_float_value(param_t param, float expected)
+{
+	float value;
+	int result = param_get(param, &value);
+	ut_compare("param_get did not return parameter", 0, result);
+	ut_compare_float("value for param doesn't match default value", expected, value, 0.001);
+
+	return true;
+}
+
 bool ParameterTest::_set_all_int_parameters_to(int32_t value)
 {
 	param_set(p0, &value);
@@ -157,14 +180,329 @@ bool ParameterTest::ResetAllExcludesWildcard()
 	return ret;
 }
 
+bool ParameterTest::exportImport()
+{
+	static constexpr float MAGIC_FLOAT_VAL = 0.314159f;
+
+	bool ret = true;
+
+	param_t test_params[] = {p0, p1, p2, p3, p4};
+
+	// set all params to corresponding param_t value
+	for (auto p : test_params) {
+		if (param_type(p) == PARAM_TYPE_INT32) {
+			const int32_t set_val = p;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			int32_t get_val = 0;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			const float set_val = (float)p + MAGIC_FLOAT_VAL;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			float get_val = 0.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, (float)p + MAGIC_FLOAT_VAL);
+		}
+	}
+
+	// save
+	if (param_save_default() != PX4_OK) {
+		PX4_ERR("param_save_default failed");
+		return false;
+	}
+
+	// zero all params and verify, but don't save
+	for (auto p : test_params) {
+		if (param_type(p) == PARAM_TYPE_INT32) {
+			const int32_t set_val = 0;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			int32_t get_val = -1;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", set_val, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			const float set_val = 0.0f;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			float get_val = -1.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare_float("value for param doesn't match default value", set_val, get_val, 0.001f);
+		}
+	}
+
+	// load saved params
+	if (param_load_default() != PX4_OK) {
+		PX4_ERR("param_save_default failed");
+		ret = true;
+	}
+
+	// check every param
+	for (auto p : test_params) {
+		if (param_type(p) == PARAM_TYPE_INT32) {
+
+			int32_t get_val = 0.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			float get_val = 0.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare_float("value for param doesn't match default value", p, (float)p + MAGIC_FLOAT_VAL, 0.001f);
+		}
+	}
+
+	return ret;
+}
+
+bool ParameterTest::exportImportAll()
+{
+	static constexpr float MAGIC_FLOAT_VAL = 0.217828f;
+
+	// backup current parameters
+	const char *param_file_name = PX4_ROOTFSDIR "/fs/microsd/param_backup";
+	int fd = open(param_file_name, O_WRONLY | O_CREAT, PX4_O_MODE_666);
+
+	if (fd < 0) {
+		PX4_ERR("open '%s' failed (%i)", param_file_name, errno);
+		return false;
+	}
+
+	int result = param_export(fd, false);
+
+	if (result != PX4_OK) {
+		PX4_ERR("param_export failed");
+		close(fd);
+		return false;
+	}
+
+	close(fd);
+
+	bool ret = true;
+
+	int N = param_count();
+
+	// set all params to corresponding param_t value
+	for (unsigned i = 0; i < N; i++) {
+
+		param_t p = param_for_index(i);
+
+		if (p == PARAM_INVALID) {
+			PX4_ERR("param invalid: %d(%d)", p, i);
+			break;
+		}
+
+		if (param_type(p) == PARAM_TYPE_INT32) {
+			const int32_t set_val = p;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			int32_t get_val = 0;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			const float set_val = (float)p + MAGIC_FLOAT_VAL;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param_set_no_notification failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			float get_val = 0.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, (float)p + MAGIC_FLOAT_VAL);
+		}
+	}
+
+	// save
+	if (param_save_default() != PX4_OK) {
+		PX4_ERR("param_save_default failed");
+		return false;
+	}
+
+	// zero all params and verify, but don't save
+	for (unsigned i = 0; i < N; i++) {
+		param_t p = param_for_index(i);
+
+		if (param_type(p) == PARAM_TYPE_INT32) {
+
+			const int32_t set_val = 0;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param set failed: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			int32_t get_val = -1;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", set_val, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			float set_val = 0.0f;
+
+			if (param_set_no_notification(p, &set_val) != PX4_OK) {
+				PX4_ERR("param set failed: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			float get_val = -1.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", set_val, get_val);
+		}
+	}
+
+	// load saved params
+	if (param_load_default() != PX4_OK) {
+		PX4_ERR("param_save_default failed");
+		ret = true;
+	}
+
+	// check every param
+	for (unsigned i = 0; i < N; i++) {
+		param_t p = param_for_index(i);
+
+		if (param_type(p) == PARAM_TYPE_INT32) {
+
+			int32_t get_val = 0;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, get_val);
+		}
+
+		if (param_type(p) == PARAM_TYPE_FLOAT) {
+			float get_val = 0.0f;
+
+			if (param_get(p, &get_val) != PX4_OK) {
+				PX4_ERR("param_get failed for: %d", p);
+				ut_assert("param_set_no_notification failed", false);
+			}
+
+			ut_compare("value for param doesn't match default value", p, (float)p + MAGIC_FLOAT_VAL);
+		}
+	}
+
+	param_reset_all();
+
+	// restore original params
+	fd = open(param_file_name, O_RDONLY);
+
+	if (fd < 0) {
+		PX4_ERR("open '%s' failed (%i)", param_file_name, errno);
+		return false;
+	}
+
+	result = param_import(fd);
+	close(fd);
+
+	if (result < 0) {
+		PX4_ERR("importing from '%s' failed (%i)", param_file_name, result);
+		return false;
+	}
+
+	return ret;
+}
+
 bool ParameterTest::run_tests()
 {
+	param_control_autosave(false);
+
+	ut_run_test(ResetAll);
 	ut_run_test(SimpleFind);
 	ut_run_test(ResetAll);
 	ut_run_test(ResetAllExcludesOne);
 	ut_run_test(ResetAllExcludesTwo);
 	ut_run_test(ResetAllExcludesBoundaryCheck);
 	ut_run_test(ResetAllExcludesWildcard);
+	ut_run_test(exportImport);
+
+	// WARNING, can potentially trash your system
+#ifdef __PX4_POSIX
+	ut_run_test(exportImportAll);
+#endif /* __PX4_POSIX */
+
+	param_control_autosave(true);
 
 	return (_tests_failed == 0);
 }