suppress warnings in tests for deprecated functions

[folly.git] / folly / futures / test / PromiseTest.cpp

diff --git a/folly/futures/test/PromiseTest.cpp b/folly/futures/test/PromiseTest.cpp
index 6338d685f53e013d512724b8e559d95f092b5a1a..858f9533bf63cf5058279051d7575ba0953c08fd 100644 (file)
--- a/folly/futures/test/PromiseTest.cpp
+++ b/folly/futures/test/PromiseTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Facebook, Inc.
+ * Copyright 2015-present Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,17 +14,23 @@
  * limitations under the License.
  */
 
-#include <gtest/gtest.h>
-
 #include <folly/futures/Future.h>
+#include <folly/portability/GTest.h>
+
+#include <memory>
 
 using namespace folly;
-using std::unique_ptr;
 using std::string;
 
+using std::unique_ptr;
 typedef FutureException eggs_t;
 static eggs_t eggs("eggs");
 
+TEST(Promise, makeEmpty) {
+  auto p = Promise<int>::makeEmpty();
+  EXPECT_TRUE(p.isFulfilled());
+}
+
 TEST(Promise, special) {
   EXPECT_FALSE(std::is_copy_constructible<Promise<int>>::value);
   EXPECT_FALSE(std::is_copy_assignable<Promise<int>>::value);
@@ -32,12 +38,61 @@ TEST(Promise, special) {
   EXPECT_TRUE(std::is_move_assignable<Promise<int>>::value);
 }
 
+TEST(Promise, getSemiFuture) {
+  Promise<int> p;
+  SemiFuture<int> f = p.getSemiFuture();
+  EXPECT_FALSE(f.isReady());
+}
+
 TEST(Promise, getFuture) {
   Promise<int> p;
   Future<int> f = p.getFuture();
   EXPECT_FALSE(f.isReady());
 }
 
+TEST(Promise, setValueUnit) {
+  Promise<Unit> p;
+  p.setValue();
+}
+
+TEST(Promise, setValueSemiFuture) {
+  Promise<int> fund;
+  auto ffund = fund.getSemiFuture();
+  fund.setValue(42);
+  EXPECT_EQ(42, ffund.value());
+
+  struct Foo {
+    string name;
+    int value;
+  };
+
+  Promise<Foo> pod;
+  auto fpod = pod.getSemiFuture();
+  Foo f = {"the answer", 42};
+  pod.setValue(f);
+  Foo f2 = fpod.value();
+  EXPECT_EQ(f.name, f2.name);
+  EXPECT_EQ(f.value, f2.value);
+
+  pod = Promise<Foo>();
+  fpod = pod.getSemiFuture();
+  pod.setValue(std::move(f2));
+  Foo f3 = fpod.value();
+  EXPECT_EQ(f.name, f3.name);
+  EXPECT_EQ(f.value, f3.value);
+
+  Promise<unique_ptr<int>> mov;
+  auto fmov = mov.getSemiFuture();
+  mov.setValue(std::make_unique<int>(42));
+  unique_ptr<int> ptr = std::move(fmov.value());
+  EXPECT_EQ(42, *ptr);
+
+  Promise<Unit> v;
+  auto fv = v.getSemiFuture();
+  v.setValue();
+  EXPECT_TRUE(fv.isReady());
+}
+
 TEST(Promise, setValue) {
   Promise<int> fund;
   auto ffund = fund.getFuture();
@@ -66,7 +121,7 @@ TEST(Promise, setValue) {
 
   Promise<unique_ptr<int>> mov;
   auto fmov = mov.getFuture();
-  mov.setValue(unique_ptr<int>(new int(42)));
+  mov.setValue(std::make_unique<int>(42));
   unique_ptr<int> ptr = std::move(fmov.value());
   EXPECT_EQ(42, *ptr);
 
@@ -86,11 +141,18 @@ TEST(Promise, setException) {
   {
     Promise<Unit> p;
     auto f = p.getFuture();
-    try {
-      throw eggs;
-    } catch (...) {
-      p.setException(exception_wrapper(std::current_exception()));
-    }
+    // Calling setException() with an exception_ptr is deprecated,
+    // but don't complain about this in the test for this function.
+    FOLLY_PUSH_WARNING
+    FOLLY_GCC_DISABLE_WARNING("-Wdeprecated-declarations")
+    p.setException(std::make_exception_ptr(eggs));
+    FOLLY_POP_WARNING
+    EXPECT_THROW(f.value(), eggs_t);
+  }
+  {
+    Promise<Unit> p;
+    auto f = p.getFuture();
+    p.setException(exception_wrapper(eggs));
     EXPECT_THROW(f.value(), eggs_t);
   }
 }
@@ -126,3 +188,34 @@ TEST(Promise, isFulfilledWithFuture) {
   p.setValue(42); // after here
   EXPECT_TRUE(p.isFulfilled());
 }
+
+TEST(Promise, brokenOnDelete) {
+  auto p = std::make_unique<Promise<int>>();
+  auto f = p->getFuture();
+
+  EXPECT_FALSE(f.isReady());
+
+  p.reset();
+
+  EXPECT_TRUE(f.isReady());
+
+  auto t = f.getTry();
+
+  EXPECT_TRUE(t.hasException<BrokenPromise>());
+}
+
+TEST(Promise, brokenPromiseHasTypeInfo) {
+  auto pInt = std::make_unique<Promise<int>>();
+  auto fInt = pInt->getFuture();
+
+  auto pFloat = std::make_unique<Promise<float>>();
+  auto fFloat = pFloat->getFuture();
+
+  pInt.reset();
+  pFloat.reset();
+
+  auto whatInt = fInt.getTry().exception().what();
+  auto whatFloat = fFloat.getTry().exception().what();
+
+  EXPECT_NE(whatInt, whatFloat);
+}