Changed unit testing framework from Google Test to Catch

test/DynamicJsonBuffer/alloc.cpp

@@ -0,0 +1,45 @@
+// Copyright Benoit Blanchon 2014-2017
+// MIT License
+//
+// Arduino JSON library
+// https://bblanchon.github.io/ArduinoJson/
+// If you like this project, please add a star!
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+static bool isAligned(void* ptr) {
+  const size_t mask = sizeof(void*) - 1;
+  size_t addr = reinterpret_cast<size_t>(ptr);
+  return (addr & mask) == 0;
+}
+
+TEST_CASE("DynamicJsonBuffer::alloc()") {
+  DynamicJsonBuffer buffer;
+
+  SECTION("InitialSizeIsZero") {
+    REQUIRE(0 == buffer.size());
+  }
+
+  SECTION("SizeIncreasesAfterAlloc") {
+    buffer.alloc(1);
+    REQUIRE(1U <= buffer.size());
+    buffer.alloc(1);
+    REQUIRE(2U <= buffer.size());
+  }
+
+  SECTION("ReturnDifferentPointer") {
+    void* p1 = buffer.alloc(1);
+    void* p2 = buffer.alloc(2);
+    REQUIRE(p1 != p2);
+  }
+
+  SECTION("Alignment") {
+    // make room for two but not three
+    buffer = DynamicJsonBuffer(2 * sizeof(void*) + 1);
+
+    REQUIRE(isAligned(buffer.alloc(1)));  // this on is aligned by design
+    REQUIRE(isAligned(buffer.alloc(1)));  // this one fits in the first block
+    REQUIRE(isAligned(buffer.alloc(1)));  // this one requires a new block
+  }
+}