errlog std::ostream

testApp/teststream.cpp

@@ -0,0 +1,89 @@
+
+#include <string.h>
+
+#include <testMain.h>
+#include <epicsUnitTest.h>
+#include <epicsEvent.h>
+#include <epicsThread.h>
+
+#include "errlogstream.h"
+
+namespace {
+
+struct tester {
+    std::string buf;
+    epicsEvent evnt;
+    bool wait;
+    unsigned called;
+
+    tester() :wait(false), called(0) {
+        errlogAddListener(&handler, (void*)this);
+    }
+    ~tester() {
+        errlogRemoveListeners(&handler, (void*)this);
+    }
+
+    static void handler(void *raw, const char *msg)
+    {
+        tester *self = (tester*)raw;
+        if(self->wait)
+            self->evnt.wait();
+        self->called++;
+        self->buf += msg;
+    }
+};
+
+void testNoBlock(const char *msg)
+{
+    testDiag("Test non blocking with message length %u", (unsigned)strlen(msg));
+    tester T;
+    T.wait = true;
+
+    {
+        errlog_ostream strm(false, 16);
+
+        strm<<msg;
+    }
+    testDiag("sleep");
+    epicsThreadSleep(0.1);
+    // see that stream dtor doesn't call errlogFlush()
+    testOk(T.called==0, "called %u times", T.called);
+    T.wait = false;
+    T.evnt.signal();
+    testDiag("flush");
+    errlogFlush();
+    testOk(T.called!=0, "called %u times", T.called);
+    testOk(T.buf==msg, "\"%s\"==\"%s\"", T.buf.c_str(), msg);
+}
+
+void testBlock(const char *msg)
+{
+    testDiag("Test blocking with message length %u", (unsigned)strlen(msg));
+    tester T;
+
+    {
+        errlog_ostream strm(true, 16);
+
+        strm<<msg;
+    }
+
+    testOk(T.called!=0, "called %u times", T.called);
+    testOk(T.buf==msg, "\"%s\"==\"%s\"", T.buf.c_str(), msg);
+}
+
+} // namespace
+
+static const char longmsg[] = "This message should be longer than the mimimum buffer length"
+                              " so that it results in a call to overflow()";
+
+MAIN(teststream)
+{
+    testPlan(0);
+    eltc(0);
+    testNoBlock("hello");
+    testNoBlock(longmsg);
+    testBlock("hello");
+    testBlock(longmsg);
+    eltc(1);
+    return testDone();
+}