Update to ArduinoJson 7.0.4

lib/ArduinoJson/extras/tests/ResourceManager/StringBuilder.cpp

@@ -0,0 +1,143 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2024, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson/Memory/StringBuilder.hpp>
+#include <catch.hpp>
+
+#include "Allocators.hpp"
+
+using namespace ArduinoJson::detail;
+
+TEST_CASE("StringBuilder") {
+  KillswitchAllocator killswitch;
+  SpyingAllocator spyingAllocator(&killswitch);
+  ResourceManager resources(&spyingAllocator);
+
+  SECTION("Empty string") {
+    StringBuilder str(&resources);
+
+    str.startString();
+    str.save();
+
+    REQUIRE(resources.size() == sizeofString(""));
+    REQUIRE(resources.overflowed() == false);
+    REQUIRE(spyingAllocator.log() ==
+            AllocatorLog{
+                Allocate(sizeofStringBuffer()),
+                Reallocate(sizeofStringBuffer(), sizeofString("")),
+            });
+  }
+
+  SECTION("Short string fits in first allocation") {
+    StringBuilder str(&resources);
+
+    str.startString();
+    str.append("hello");
+
+    REQUIRE(str.isValid() == true);
+    REQUIRE(str.str() == "hello");
+    REQUIRE(resources.overflowed() == false);
+    REQUIRE(spyingAllocator.log() == AllocatorLog{
+                                         Allocate(sizeofStringBuffer()),
+                                     });
+  }
+
+  SECTION("Long string needs reallocation") {
+    StringBuilder str(&resources);
+    const char* lorem =
+        "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
+        "eiusmod tempor incididunt ut labore et dolore magna aliqua.";
+
+    str.startString();
+    str.append(lorem);
+
+    REQUIRE(str.isValid() == true);
+    REQUIRE(str.str() == lorem);
+    REQUIRE(resources.overflowed() == false);
+    REQUIRE(spyingAllocator.log() ==
+            AllocatorLog{
+                Allocate(sizeofStringBuffer(1)),
+                Reallocate(sizeofStringBuffer(1), sizeofStringBuffer(2)),
+                Reallocate(sizeofStringBuffer(2), sizeofStringBuffer(3)),
+            });
+  }
+
+  SECTION("Realloc fails") {
+    StringBuilder str(&resources);
+
+    str.startString();
+    killswitch.on();
+    str.append(
+        "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
+        "eiusmod tempor incididunt ut labore et dolore magna aliqua.");
+
+    REQUIRE(spyingAllocator.log() ==
+            AllocatorLog{
+                Allocate(sizeofStringBuffer()),
+                ReallocateFail(sizeofStringBuffer(), sizeofStringBuffer(2)),
+                Deallocate(sizeofStringBuffer()),
+            });
+    REQUIRE(str.isValid() == false);
+    REQUIRE(resources.overflowed() == true);
+  }
+
+  SECTION("Initial allocation fails") {
+    StringBuilder str(&resources);
+
+    killswitch.on();
+    str.startString();
+
+    REQUIRE(str.isValid() == false);
+    REQUIRE(resources.overflowed() == true);
+    REQUIRE(spyingAllocator.log() == AllocatorLog{
+                                         AllocateFail(sizeofStringBuffer()),
+                                     });
+  }
+}
+
+static StringNode* addStringToPool(ResourceManager& resources, const char* s) {
+  StringBuilder str(&resources);
+  str.startString();
+  str.append(s);
+  return str.save();
+}
+
+TEST_CASE("StringBuilder::save() deduplicates strings") {
+  ResourceManager resources;
+
+  SECTION("Basic") {
+    auto s1 = addStringToPool(resources, "hello");
+    auto s2 = addStringToPool(resources, "world");
+    auto s3 = addStringToPool(resources, "hello");
+
+    REQUIRE(s1 == s3);
+    REQUIRE(s2 != s3);
+    REQUIRE(s1->references == 2);
+    REQUIRE(s2->references == 1);
+    REQUIRE(s3->references == 2);
+    REQUIRE(resources.size() == sizeofString("hello") + sizeofString("world"));
+  }
+
+  SECTION("Requires terminator") {
+    auto s1 = addStringToPool(resources, "hello world");
+    auto s2 = addStringToPool(resources, "hello");
+
+    REQUIRE(s2 != s1);
+    REQUIRE(s1->references == 1);
+    REQUIRE(s2->references == 1);
+    REQUIRE(resources.size() ==
+            sizeofString("hello world") + sizeofString("hello"));
+  }
+
+  SECTION("Don't overrun") {
+    auto s1 = addStringToPool(resources, "hello world");
+    auto s2 = addStringToPool(resources, "wor");
+
+    REQUIRE(s2 != s1);
+    REQUIRE(s1->references == 1);
+    REQUIRE(s2->references == 1);
+    REQUIRE(resources.size() ==
+            sizeofString("hello world") + sizeofString("wor"));
+  }
+}