初始化提交

arduino-cli/libraries/ArduinoJson/extras/tests/MemoryPool/StringCopier.cpp

@@ -0,0 +1,84 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright Benoit Blanchon 2014-2021
+// MIT License
+
+#include <ArduinoJson/StringStorage/StringCopier.hpp>
+#include <catch.hpp>
+
+using namespace ARDUINOJSON_NAMESPACE;
+
+TEST_CASE("StringCopier") {
+  char buffer[4096];
+
+  SECTION("Works when buffer is big enough") {
+    MemoryPool pool(buffer, addPadding(JSON_STRING_SIZE(6)));
+    StringCopier str(pool);
+
+    str.startString();
+    str.append("hello");
+    str.append('\0');
+
+    REQUIRE(str.isValid() == true);
+    REQUIRE(str.c_str() == std::string("hello"));
+  }
+
+  SECTION("Returns null when too small") {
+    MemoryPool pool(buffer, sizeof(void*));
+    StringCopier str(pool);
+
+    str.startString();
+    str.append("hello world!");
+
+    REQUIRE(str.isValid() == false);
+  }
+
+  SECTION("Increases size of memory pool") {
+    MemoryPool pool(buffer, addPadding(JSON_STRING_SIZE(6)));
+    StringCopier str(pool);
+
+    str.startString();
+    str.append('h');
+    str.save();
+
+    REQUIRE(1 == pool.size());
+  }
+}
+
+static const char* addStringToPool(MemoryPool& pool, const char* s) {
+  StringCopier str(pool);
+  str.startString();
+  str.append(s);
+  str.append('\0');
+  return str.save();
+}
+
+TEST_CASE("StringCopier::save() deduplicates strings") {
+  char buffer[4096];
+  MemoryPool pool(buffer, 4096);
+
+  SECTION("Basic") {
+    const char* s1 = addStringToPool(pool, "hello");
+    const char* s2 = addStringToPool(pool, "world");
+    const char* s3 = addStringToPool(pool, "hello");
+
+    REQUIRE(s1 == s3);
+    REQUIRE(s2 != s3);
+    REQUIRE(pool.size() == 12);
+  }
+
+  SECTION("Requires terminator") {
+    const char* s1 = addStringToPool(pool, "hello world");
+    const char* s2 = addStringToPool(pool, "hello");
+
+    REQUIRE(s2 != s1);
+    REQUIRE(pool.size() == 12 + 6);
+  }
+
+  SECTION("Don't overrun") {
+    const char* s1 = addStringToPool(pool, "hello world");
+    const char* s2 = addStringToPool(pool, "wor");
+
+    REQUIRE(s2 != s1);
+    REQUIRE(pool.size() == 12 + 4);
+  }
+}