From 5860fdb9a9b26e37852520d4598749f65f893bb5 Mon Sep 17 00:00:00 2001
From: "Alfred E. Heggestad" <aeh@db.org>
Date: Mon, 21 Mar 2016 22:13:04 +0100
Subject: mos: add pseudo Mean Opinion Score routine

thanks to Lorenzo Mangani for the original patch
---
 test/main.c  |  1 +
 test/mos.c   | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 test/srcs.mk |  1 +
 test/test.c  |  7 +++++++
 test/test.h  | 12 ++++++++++++
 5 files changed, 74 insertions(+)
 create mode 100644 test/mos.c

(limited to 'test')

diff --git a/test/main.c b/test/main.c
index 3a2cf37..9ee4825 100644
--- a/test/main.c
+++ b/test/main.c
@@ -26,6 +26,7 @@ static const struct test tests[] = {
 	TEST(test_call_reject),
 	TEST(test_cmd),
 	TEST(test_cplusplus),
+	TEST(test_mos),
 	TEST(test_ua_alloc),
 	TEST(test_ua_register),
 	TEST(test_uag_find_param),
diff --git a/test/mos.c b/test/mos.c
new file mode 100644
index 0000000..20b13c2
--- /dev/null
+++ b/test/mos.c
@@ -0,0 +1,53 @@
+/**
+ * @file test/mos.c  Test the MOS (Mean Opinion Score) calculator
+ *
+ * Copyright (C) 2010 - 2016 Creytiv.com
+ */
+#include <re.h>
+#include <baresip.h>
+#include "test.h"
+
+
+#define DEBUG_MODULE "mos"
+#define DEBUG_LEVEL 5
+#include <re_dbg.h>
+
+
+int test_mos(void)
+{
+#define PRECISION 0.001
+	static struct {
+		/* input: */
+		double rtt;
+		double jitter;
+		uint32_t packet_loss;
+
+		/* output: */
+		double r_factor;
+		double mos;
+	} testv[] = {
+		{    0.0,    0.0,   0,  92.95,  4.404 },
+		{  500.0,    0.0,   0,  54.20,  2.796 },
+		{ 1000.0,    0.0,   0,   4.20,  0.990 },
+		{    0.0,  100.0,   0,  84.20,  4.172 },
+		{    0.0,  200.0,   0,  64.20,  3.315 },
+		{    0.0,    0.0,   1,  90.45,  4.350 },
+		{    0.0,    0.0,  10,  67.95,  3.499 },
+		{   10.0,   10.0,  10,  67.20,  3.463 },
+	};
+	size_t i;
+	int err = 0;
+
+	for (i=0; i<ARRAY_SIZE(testv); i++) {
+		double r_factor, mos;
+
+		mos = mos_calculate(&r_factor, testv[i].rtt, testv[i].jitter,
+				    testv[i].packet_loss);
+
+		ASSERT_DOUBLE_EQ(testv[i].r_factor, r_factor, PRECISION);
+		ASSERT_DOUBLE_EQ(testv[i].mos, mos, PRECISION);
+	}
+
+ out:
+	return err;
+}
diff --git a/test/srcs.mk b/test/srcs.mk
index 6195d10..332ba3f 100644
--- a/test/srcs.mk
+++ b/test/srcs.mk
@@ -12,6 +12,7 @@ TEST_SRCS	+= cmd.c
 TEST_SRCS	+= ua.c
 TEST_SRCS	+= cplusplus.c
 TEST_SRCS	+= call.c
+TEST_SRCS	+= mos.c
 
 
 #
diff --git a/test/test.c b/test/test.c
index 59e1cd1..8623180 100644
--- a/test/test.c
+++ b/test/test.c
@@ -1,3 +1,4 @@
+#include <math.h>
 #include <re.h>
 #include <baresip.h>
 #include "test.h"
@@ -35,3 +36,9 @@ int re_main_timeout(uint32_t timeout_ms)
 	tmr_cancel(&tmr);
 	return err;
 }
+
+
+bool test_cmp_double(double a, double b, double precision)
+{
+	return fabs(a - b) < precision;
+}
diff --git a/test/test.h b/test/test.h
index 4a91d28..20ccdcd 100644
--- a/test/test.h
+++ b/test/test.h
@@ -23,6 +23,16 @@
 		goto out;					\
 	}
 
+#define ASSERT_DOUBLE_EQ(expected, actual, prec)			\
+	if (!test_cmp_double((expected), (actual), (prec))) {		\
+		warning("selftest: ASSERT_DOUBLE_EQ: %s:%u:"		\
+			" expected=%f, actual=%f\n",			\
+			__FILE__, __LINE__,				\
+			(double)(expected), (double)(actual));		\
+		err = EINVAL;						\
+		goto out;						\
+	}
+
 #define ASSERT_STREQ(expected, actual)					\
 	if (0 != str_cmp((expected), (actual))) {			\
 		warning("selftest: ASSERT_STREQ: %s:%u:"		\
@@ -47,6 +57,7 @@
 /* helpers */
 
 int re_main_timeout(uint32_t timeout_ms);
+bool test_cmp_double(double a, double b, double precision);
 
 
 #ifdef USE_TLS
@@ -78,6 +89,7 @@ int test_cmd(void);
 int test_ua_alloc(void);
 int test_uag_find_param(void);
 int test_ua_register(void);
+int test_mos(void);
 
 int test_call_answer(void);
 int test_call_reject(void);
-- 
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