New unittests (#28)

Refactor unittests

1 files changed, 37 insertions, 0 deletions

diff --git a/tests/tests_sqrt.c b/tests/tests_sqrt.c
new file mode 100644
index 0000000..8faf016
--- /dev/null
+++ b/tests/tests_sqrt.c
@@ -0,0 +1,37 @@
+#include "tests_sqrt.h"
+#include "tests.h"
+
+int test_sqrt_specific()
+{
+    ASSERT_EQ_INT(fix16_sqrt(fix16_from_int(16)), fix16_from_int(4));
+    ASSERT_EQ_INT(fix16_sqrt(fix16_from_int(100)), fix16_from_int(10));
+    ASSERT_EQ_INT(fix16_sqrt(fix16_from_int(1)), fix16_from_int(1));
+#ifndef FIXMATH_NO_ROUNDING
+    ASSERT_EQ_INT(fix16_sqrt(214748302), 3751499);
+    ASSERT_EQ_INT(fix16_sqrt(214748303), 3751499);
+    ASSERT_EQ_INT(fix16_sqrt(214748359), 3751499);
+    ASSERT_EQ_INT(fix16_sqrt(214748360), 3751500);
+#endif
+    return 0;
+}
+
+int test_sqrt_short()
+{
+    for (unsigned i = 0; i < TESTCASES_COUNT; ++i)
+    {
+        fix16_t a       = testcases[i];
+        double  fa      = fix16_to_dbl(a);
+        fix16_t result  = fix16_sqrt(a);
+        double  fresult = sqrt(fa);
+        ASSERT_NEAR_DOUBLE(fresult, fix16_to_dbl(result), fix16_to_dbl(1),
+                           "in: %f", fa);
+    }
+    return 0;
+}
+
+int test_sqrt()
+{
+    TEST(test_sqrt_specific());
+    TEST(test_sqrt_short());
+    return 0;
+}