git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_data_structures/values/juce_CachedValue.cpp

@@ -0,0 +1,155 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
+   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
+
+   End User License Agreement: www.juce.com/juce-6-licence
+   Privacy Policy: www.juce.com/juce-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+
+#if JUCE_UNIT_TESTS
+
+class CachedValueTests  : public UnitTest
+{
+public:
+    CachedValueTests()
+        : UnitTest ("CachedValues", UnitTestCategories::values)
+    {}
+
+    void runTest() override
+    {
+        beginTest ("default constructor");
+        {
+            CachedValue<String> cv;
+            expect (cv.isUsingDefault());
+            expect (cv.get() == String());
+        }
+
+        beginTest ("without default value");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", "testvalue", nullptr);
+
+            CachedValue<String> cv (t, "testkey", nullptr);
+
+            expect (! cv.isUsingDefault());
+            expect (cv.get() == "testvalue");
+
+            cv.resetToDefault();
+
+            expect (cv.isUsingDefault());
+            expect (cv.get() == String());
+        }
+
+        beginTest ("with default value");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", "testvalue", nullptr);
+
+            CachedValue<String> cv (t, "testkey", nullptr, "defaultvalue");
+
+            expect (! cv.isUsingDefault());
+            expect (cv.get() == "testvalue");
+
+            cv.resetToDefault();
+
+            expect (cv.isUsingDefault());
+            expect (cv.get() == "defaultvalue");
+        }
+
+        beginTest ("with default value (int)");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", 23, nullptr);
+
+            CachedValue<int> cv (t, "testkey", nullptr, 34);
+
+            expect (! cv.isUsingDefault());
+            expect (cv == 23);
+            expectEquals (cv.get(), 23);
+
+            cv.resetToDefault();
+
+            expect (cv.isUsingDefault());
+            expect (cv == 34);
+        }
+
+        beginTest ("with void value");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", var(), nullptr);
+
+            CachedValue<String> cv (t, "testkey", nullptr, "defaultvalue");
+
+            expect (! cv.isUsingDefault());
+            expect (cv == "");
+            expectEquals (cv.get(), String());
+        }
+
+        beginTest ("with non-existent value");
+        {
+            ValueTree t ("root");
+
+            CachedValue<String> cv (t, "testkey", nullptr, "defaultvalue");
+
+            expect (cv.isUsingDefault());
+            expect (cv == "defaultvalue");
+            expect (cv.get() == "defaultvalue");
+        }
+
+        beginTest ("with value changing");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", "oldvalue", nullptr);
+
+            CachedValue<String> cv (t, "testkey", nullptr, "defaultvalue");
+            expect (cv == "oldvalue");
+
+            t.setProperty ("testkey", "newvalue", nullptr);
+            expect (cv != "oldvalue");
+            expect (cv == "newvalue");
+        }
+
+        beginTest ("set value");
+        {
+            ValueTree t ("root");
+            t.setProperty ("testkey", 23, nullptr);
+
+            CachedValue<int> cv (t, "testkey", nullptr, 45);
+            cv = 34;
+
+            expectEquals ((int) t["testkey"], 34);
+
+            cv.resetToDefault();
+            expect (cv == 45);
+            expectEquals (cv.get(), 45);
+
+            expect (t["testkey"] == var());
+        }
+    }
+};
+
+static CachedValueTests cachedValueTests;
+
+#endif
+
+} // namespace juce