1 files changed, 44 insertions, 0 deletions
diff --git a/src/utest/test-2ary-cases.h b/src/utest/test-2ary-cases.h
new file mode 100644
index 000000000..330230276
--- /dev/null
+++ b/src/utest/test-2ary-cases.h
@@ -0,0 +1,44 @@
+#ifndef SEEN_UTEST_TEST_CASES_H
+#define SEEN_UTEST_TEST_CASES_H
+
+#include <utest/utest.h>
+
+
+template<class FArg0, class FArg1, class ValidArg0>
+struct Case2 {
+    FArg0 f_arg0;   ///< First arg to pass to \a f.
+    FArg1 f_arg1;   ///< Second arg to pass to \a f.
+    ValidArg0 valid_arg0;  ///< First arg to pass to \a ValidP.
+};
+
+/** Often, ValidP can be std::equal_to\<FRet\> (#include \<functional\>), in which case ValidArg0
+    should equal FRet. */
+template<class FRet, class FArg0, class FArg1, class ValidArg0, class ValidP>
+static void
+test_2ary_cases(char const test_name[],
+                FRet (*f)(FArg0, FArg1),
+                unsigned const ncases, Case2<FArg0, FArg1, ValidArg0> const cases[])
+{
+    ValidP valid;
+    UTEST_TEST(test_name) {
+        for(unsigned i = 0; i < ncases; ++i) {
+            Case2<FArg0, FArg1, ValidArg0> const &c = cases[i];
+            FRet const f_ret(f(c.f_arg0, c.f_arg1));
+            UTEST_ASSERT(valid(c.valid_arg0, f_ret));
+        }
+    }
+}
+
+
+#endif /* !SEEN_UTEST_TEST_CASES_H */
+
+/*
+  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 :