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authorTavian Barnes <tavianator@tavianator.com>2012-12-18 16:54:23 -0500
committerTavian Barnes <tavianator@tavianator.com>2012-12-18 17:02:56 -0500
commit7da79cf1e24fbc58e0ff2e498a7f3d189a51cbd6 (patch)
tree702a05f5cfb2490462c1ce93a44591cfaec5d332 /libdimension/tests/polynomial.c
parent330ead5f47a7c4904cc6cecfa36b10d75718f1ff (diff)
downloaddimension-7da79cf1e24fbc58e0ff2e498a7f3d189a51cbd6.tar.xz
Improve the unit test macro API a bit.
Diffstat (limited to 'libdimension/tests/polynomial.c')
-rw-r--r--libdimension/tests/polynomial.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/libdimension/tests/polynomial.c b/libdimension/tests/polynomial.c
index 8fd34df..208edf9 100644
--- a/libdimension/tests/polynomial.c
+++ b/libdimension/tests/polynomial.c
@@ -25,7 +25,7 @@
#include "tests.h"
/* poly[] = 2*(x + 1)*(x - 1.2345)*(x - 2.3456)*(x - 5)*(x - 100) */
-const double poly[6] = {
+static const double poly[6] = {
[5] = 2.0,
[4] = -215.1602,
[3] = 1540.4520864,
@@ -34,24 +34,35 @@ const double poly[6] = {
[0] = 2895.6432,
};
-DMNSN_TEST("polynomial", finds_positive_roots)
+static double roots[5];
+static size_t nroots;
+
+#define DMNSN_CLOSE_ENOUGH 1.0e-6
+
+DMNSN_TEST_SETUP(polynomial)
{
- double x[5];
- size_t n = dmnsn_polynomial_solve(poly, 5, x);
- ck_assert_int_eq(n, 4);
+ nroots = dmnsn_polynomial_solve(poly, 5, roots);
}
-DMNSN_END_TEST
-DMNSN_TEST("polynomial", accurate_roots)
+DMNSN_TEST(polynomial, finds_positive_roots)
{
- double x[5];
- size_t n = dmnsn_polynomial_solve(poly, 5, x);
+ ck_assert_int_eq(nroots, 4);
+}
- for (size_t i = 0; i < n; ++i) {
- double evmin = dmnsn_polynomial_evaluate(poly, 5, x[i] - dmnsn_epsilon);
- double ev = dmnsn_polynomial_evaluate(poly, 5, x[i]);
- double evmax = dmnsn_polynomial_evaluate(poly, 5, x[i] + dmnsn_epsilon);
+DMNSN_TEST(polynomial, local_min_roots)
+{
+ for (size_t i = 0; i < nroots; ++i) {
+ double evmin = dmnsn_polynomial_evaluate(poly, 5, roots[i] - dmnsn_epsilon);
+ double ev = dmnsn_polynomial_evaluate(poly, 5, roots[i]);
+ double evmax = dmnsn_polynomial_evaluate(poly, 5, roots[i] + dmnsn_epsilon);
ck_assert(fabs(ev) < fabs(evmin) && fabs(ev) < fabs(evmax));
}
}
-DMNSN_END_TEST
+
+DMNSN_TEST(polynomial, accurate_roots)
+{
+ for (size_t i = 0; i < nroots; ++i) {
+ double ev = dmnsn_polynomial_evaluate(poly, 5, roots[i]);
+ ck_assert(fabs(ev) < DMNSN_CLOSE_ENOUGH);
+ }
+}