Fix for incorrect nni_usleep(), found with newly created platform tests.

1 files changed, 101 insertions, 0 deletions

diff --git a/tests/platform.c b/tests/platform.c
new file mode 100644
index 00000000..392c5c9d
--- /dev/null
+++ b/tests/platform.c
@@ -0,0 +1,101 @@
+//
+// Copyright 2016 Garrett D'Amore <garrett@damore.org>
+//
+// This software is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+#include "convey.h"
+#include "nng.h"
+#include "core/nng_impl.h"
+
+#ifndef	_WIN32
+#include <sys/time.h>
+#endif
+
+uint64_t getms(void) {
+#ifdef	_WIN32
+	return (GetTickCount())	;
+#else
+	static time_t epoch;
+	struct timeval tv;
+
+	if (epoch == 0) {
+		epoch = time(NULL);
+	}
+	gettimeofday(&tv, NULL);
+
+	if (tv.tv_sec < epoch) {
+		// Broken clock.
+		// This will force all other timing tests to fail
+		return (0);
+	}
+	tv.tv_sec -= epoch;
+	return (((uint64_t)(tv.tv_sec ) * 1000) + (tv.tv_usec / 1000));
+#endif
+}
+
+TestMain("Platform Operations", {
+
+	int rv = nni_init();	// This is required for anything else to work
+	Convey("Platform init worked", {
+		So(rv == 0);
+	})
+	Convey("The clock works", {
+		uint64_t now = getms();
+
+		Convey("usleep works", {
+			nni_usleep(100000);
+
+			So((getms() - now) > 100);	// cannot be *shorter*!!
+			So((getms() - now) < 150);	// crummy clock resolution?
+		})
+		Convey("times work", {
+			uint64_t msend;
+			int usdelta;
+			int msdelta;
+			nni_time usend;
+			nni_time usnow = nni_clock();
+			nni_usleep(200000);
+			usend = nni_clock();
+			msend = getms();
+
+			So(usend > usnow);
+			So(msend > now);
+			usdelta = (int)((usend - usnow) / 1000);
+			msdelta = (int)((msend - now));
+			So(usdelta > 200);
+			So(usdelta < 220);
+			So(abs(msdelta - usdelta) < 20);
+		})
+	})
+	Convey("Mutexes work", {
+		nni_mutex mx;
+		int rv;
+
+		rv = nni_mutex_init(&mx);
+		So(rv == 0);
+
+		Convey("We can lock a mutex", {
+			nni_mutex_enter(&mx);
+			So(1);
+			Convey("And cannot recursively lock", {
+				rv = nni_mutex_tryenter(&mx);
+				So(rv != 0);
+			})
+			Convey("And we can unlock it", {
+				nni_mutex_exit(&mx);
+				So(1);
+				Convey("And then lock it again", {
+					rv = nni_mutex_tryenter(&mx);
+					So(rv == 0);
+				})
+			})
+		})
+		Convey("We can finalize it", {
+			nni_mutex_fini(&mx);
+		})
+	})
+})
\ No newline at end of file