diff --git a/Tests/CFRunLoop/observer.m b/Tests/CFRunLoop/observer.m
new file mode 100644
index 00000000..bb3436a2
--- /dev/null
+++ b/Tests/CFRunLoop/observer.m
@@ -0,0 +1,34 @@
+#include "CoreFoundation/CFRunLoop.h"
+#include "../CFTesting.h"
+#include <string.h>
+
+static void
+observe (CFRunLoopObserverRef o, CFRunLoopActivity a, void *info)
+{
+}
+
+int main (void)
+{
+  int marker = 42;
+  CFRunLoopObserverContext ctx = { 0, &marker, NULL, NULL, NULL };
+  CFRunLoopObserverContext got;
+  CFOptionFlags acts = kCFRunLoopBeforeWaiting | kCFRunLoopExit;
+  CFRunLoopObserverRef obs = CFRunLoopObserverCreate (NULL, acts, true, 5,
+    observe, &ctx);
+
+  PASS_CF (obs != NULL, "An observer is created.");
+  PASS_CF (CFGetTypeID (obs) == CFRunLoopObserverGetTypeID (),
+    "An observer has the observer type ID.");
+  PASS_CF (CFRunLoopObserverGetActivities (obs) == acts,
+    "The observed activities round-trip.");
+  PASS_CF (CFRunLoopObserverDoesRepeat (obs) == true,
+    "The repeat flag round-trips.");
+  PASS_CF (CFRunLoopObserverGetOrder (obs) == 5, "The order round-trips.");
+
+  memset (&got, 0, sizeof (got));
+  CFRunLoopObserverGetContext (obs, &got);
+  PASS_CF (got.info == &marker, "The context info pointer round-trips.");
+
+  CFRelease (obs);
+  return 0;
+}
diff --git a/Tests/CFRunLoop/source_accessors.m b/Tests/CFRunLoop/source_accessors.m
new file mode 100644
index 00000000..57224614
--- /dev/null
+++ b/Tests/CFRunLoop/source_accessors.m
@@ -0,0 +1,40 @@
+#include "CoreFoundation/CFRunLoop.h"
+#include "../CFTesting.h"
+#include <string.h>
+
+static void
+perform (void *info)
+{
+}
+
+int main (void)
+{
+  int marker = 99;
+  CFRunLoopSourceContext ctx;
+  CFRunLoopSourceContext got;
+  CFRunLoopSourceRef src;
+
+  memset (&ctx, 0, sizeof (ctx));
+  ctx.version = 0;
+  ctx.info = &marker;
+  ctx.perform = perform;
+  src = CFRunLoopSourceCreate (NULL, 4, &ctx);
+
+  PASS_CF (src != NULL, "A source is created.");
+  PASS_CF (CFGetTypeID (src) == CFRunLoopSourceGetTypeID (),
+    "A source has the source type ID.");
+  PASS_CF (CFRunLoopSourceGetOrder (src) == 4, "The order round-trips.");
+  PASS_CF (CFRunLoopSourceIsValid (src) == true, "A new source is valid.");
+
+  memset (&got, 0, sizeof (got));
+  CFRunLoopSourceGetContext (src, &got);
+  PASS_CF (got.info == &marker, "The context info pointer round-trips.");
+  PASS_CF (got.version == 0, "The context version round-trips.");
+
+  CFRunLoopSourceInvalidate (src);
+  PASS_CF (CFRunLoopSourceIsValid (src) == false,
+    "An invalidated source is no longer valid.");
+
+  CFRelease (src);
+  return 0;
+}
diff --git a/Tests/CFRunLoop/timer_accessors.m b/Tests/CFRunLoop/timer_accessors.m
new file mode 100644
index 00000000..33e7f41c
--- /dev/null
+++ b/Tests/CFRunLoop/timer_accessors.m
@@ -0,0 +1,44 @@
+#include "CoreFoundation/CFRunLoop.h"
+#include "../CFTesting.h"
+#include <string.h>
+
+static void
+fire (CFRunLoopTimerRef t, void *info)
+{
+}
+
+int main (void)
+{
+  int marker = 7;
+  CFRunLoopTimerContext ctx = { 0, &marker, NULL, NULL, NULL };
+  CFRunLoopTimerContext got;
+  CFRunLoopTimerRef t = CFRunLoopTimerCreate (NULL, 100.0, 5.0, 0, 3,
+    fire, &ctx);
+  CFRunLoopTimerRef once = CFRunLoopTimerCreate (NULL, 100.0, 0.0, 0, 0,
+    fire, NULL);
+
+  PASS_CF (t != NULL, "A timer is created.");
+  PASS_CF (CFGetTypeID (t) == CFRunLoopTimerGetTypeID (),
+    "A timer has the timer type ID.");
+  PASS_CF (CFRunLoopTimerGetNextFireDate (t) == 100.0,
+    "The fire date round-trips.");
+  PASS_CF (CFRunLoopTimerGetInterval (t) == 5.0, "The interval round-trips.");
+  PASS_CF (CFRunLoopTimerGetOrder (t) == 3, "The order round-trips.");
+  PASS_CF (CFRunLoopTimerDoesRepeat (t) == true,
+    "A timer with a positive interval repeats.");
+  PASS_CF (CFRunLoopTimerDoesRepeat (once) == false,
+    "A timer with a zero interval does not repeat.");
+  PASS_CF (CFRunLoopTimerIsValid (t) == true, "A new timer is valid.");
+
+  memset (&got, 0, sizeof (got));
+  CFRunLoopTimerGetContext (t, &got);
+  PASS_CF (got.info == &marker, "The context info pointer round-trips.");
+
+  CFRunLoopTimerInvalidate (t);
+  PASS_CF (CFRunLoopTimerIsValid (t) == false,
+    "An invalidated timer is no longer valid.");
+
+  CFRelease (t);
+  CFRelease (once);
+  return 0;
+}