THRIFT-4476: Typecasting problem on double list items,
emitting doubles with high precision
Client: cpp
Client: erl
Client: java
Client: js
Client: py

This closes #1511
diff --git a/lib/cpp/test/RenderedDoubleConstantsTest.cpp b/lib/cpp/test/RenderedDoubleConstantsTest.cpp
new file mode 100644
index 0000000..0ca042b
--- /dev/null
+++ b/lib/cpp/test/RenderedDoubleConstantsTest.cpp
@@ -0,0 +1,122 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+#define EPSILON 0.0000001
+#include <typeindex>
+#include <typeinfo>
+#include <vector>
+
+#include "gen-cpp/DoubleConstantsTest_constants.h"
+using namespace thrift::test;
+
+#define BOOST_TEST_MODULE RenderedDoubleConstantsTest
+#include <boost/test/unit_test.hpp>
+
+BOOST_AUTO_TEST_SUITE(RenderedDoubleConstantsTest)
+
+BOOST_AUTO_TEST_CASE(test_rendered_double_constants) {
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_INT_CONSTANT = 1.0;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT = -100.0;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT = 9223372036854775807.0;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT = -9223372036854775807.0;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS = 3.14159265359;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE = 1000000.1;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE = -1000000.1;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_DOUBLE = 1.7e+308;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE = 9223372036854775816.43;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_SMALL_DOUBLE = -1.7e+308;
+    const double EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE = -9223372036854775816.43;
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_INT_CONSTANT_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_INT_CONSTANT, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGE_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_DOUBLE, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_SMALL_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_SMALL_DOUBLE, EPSILON);
+    BOOST_CHECK_CLOSE(
+        g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE_TEST,
+        EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE, EPSILON);
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_INT_CONSTANT_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_INT_CONSTANT).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_INT_CONSTANT).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_LARGEST_INT_CONSTANT).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_SMALLEST_INT_CONSTANT).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_DOUBLE_WITH_MANY_DECIMALS).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_FRACTIONAL_DOUBLE).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_FRACTIONAL_DOUBLE).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGE_DOUBLE_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_DOUBLE).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_LARGE_FRACTIONAL_DOUBLE).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_SMALL_DOUBLE_TEST).hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_SMALL_DOUBLE).hash_code());
+    BOOST_CHECK(
+        typeid(g_DoubleConstantsTest_constants.DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE_TEST)
+            .hash_code() ==
+        typeid(EXPECTED_DOUBLE_ASSIGNED_TO_NEGATIVE_BUT_LARGE_FRACTIONAL_DOUBLE).hash_code());
+}
+
+BOOST_AUTO_TEST_CASE(test_rendered_double_list) {
+    const std::vector<double> EXPECTED_DOUBLE_LIST{1.0,-100.0,100.0,9223372036854775807.0,-9223372036854775807.0,
+        3.14159265359,1000000.1,-1000000.1,1.7e+308,-1.7e+308,9223372036854775816.43,-9223372036854775816.43};
+    BOOST_CHECK_EQUAL(g_DoubleConstantsTest_constants.DOUBLE_LIST_TEST.size(), EXPECTED_DOUBLE_LIST.size());
+    for (unsigned int i = 0; i < EXPECTED_DOUBLE_LIST.size(); ++i) {
+        BOOST_CHECK_CLOSE(g_DoubleConstantsTest_constants.DOUBLE_LIST_TEST[i], EXPECTED_DOUBLE_LIST[i], EPSILON);
+    }
+}
+
+BOOST_AUTO_TEST_SUITE_END()