1 files changed, 91 insertions, 0 deletions
diff --git a/src/round-test.cpp b/src/round-test.cpp
new file mode 100644
index 000000000..efb4b3e83
--- /dev/null
+++ b/src/round-test.cpp
@@ -0,0 +1,91 @@
+#include <cassert>
+#include <functional>
+#include <glib/gmacros.h>
+
+#include <utest/test-1ary-cases.h>
+#include <utest/utest.h>
+#include <round.h>
+
+static Case1<double, double> const nonneg_round_cases[] = {
+    { 5.0, 5.0 },
+    { 0.0, 0.0 },
+    { 5.4, 5.0 },
+    { 5.6, 6.0 },
+    { 1e-7, 0.0 },
+    { 1e7 + .49, 1e7 },
+    { 1e7 + .51, 1e7 + 1 },
+    { 1e12 + .49, 1e12 },
+    { 1e12 + .51, 1e12 + 1 },
+    { 1e40, 1e40 }
+};
+
+static Case1<double, double> nonpos_round_cases[G_N_ELEMENTS(nonneg_round_cases)];
+
+static void fill_nonpos_round_cases()
+{
+    assert(G_N_ELEMENTS(nonneg_round_cases) == G_N_ELEMENTS(nonpos_round_cases));
+    for(unsigned i = 0; i < G_N_ELEMENTS(nonpos_round_cases); ++i) {
+        nonpos_round_cases[i].f_arg0 = -nonneg_round_cases[i].f_arg0;
+        nonpos_round_cases[i].valid_arg0 = -nonneg_round_cases[i].valid_arg0;
+    }
+}
+
+static bool
+test_round()
+{
+    utest_start("round");
+    test_1ary_cases<double, double, double, std::equal_to<double> >
+        ("non-neg round",
+         Inkscape::round,
+         G_N_ELEMENTS(nonneg_round_cases), nonneg_round_cases);
+
+    fill_nonpos_round_cases();
+
+    test_1ary_cases<double, double, double, std::equal_to<double> >
+        ("non-pos round",
+         Inkscape::round,
+         G_N_ELEMENTS(nonpos_round_cases), nonpos_round_cases);
+
+#if 0
+    for(unsigned i = 0; i < G_N_ELEMENTS(round_cases); ++i) {
+        RoundCase const &c = round_cases[i];
+        double const got = Inkscape::round(c.unrounded);
+        UTEST_ASSERT( got == c.exp_rounded );
+
+        double const neg_got = Inkscape::round(-c.unrounded);
+        UTEST_ASSERT( neg_got = -c.exp_rounded );
+    }
+#endif
+    return utest_end();
+}
+
+#if 0
+/* Deliberately down here just to ensure that correct behaviour of Inkscape::round doesn't depend
+   on #including decimal-round.h.  (decimal-round.h already #includes round.h, so there's no point
+   checking the other way around.) */
+#include <decimal-round.h>
+
+static void
+test_decimal_round()
+{
+}
+#endif
+
+int main()
+{
+    int const ret = ( test_round()
+                      ? EXIT_SUCCESS
+                      : EXIT_FAILURE );
+    return ret;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :