(feat) MemoizingSupplier.isMemoized

[alexey-pelykh]

Addresses #7292

[alexey-pelykh]

I'm having some issues with verification locally:

[ERROR] Errors: 
[ERROR]   GcFinalizationTest.testAwaitClear_interrupted:185->assertWrapsInterruptedException:150 » NoClassDefFound Could not initialize class com.google.common.truth.Platform
[ERROR]   GcFinalizationTest.testAwaitDone_finalizationPredicate_interrupted:206->assertWrapsInterruptedException:150 » NoClassDefFound Could not initialize class com.google.common.truth.Platform
[ERROR]   GcFinalizationTest.testAwaitDone_future_interrupted_interrupted:172->assertWrapsInterruptedException:150 » NoSuchMethod 'com.google.common.base.Supplier com.google.common.base.Suppliers.memoize(com.google.common.base.Supplier)'
[ERROR]   GcFinalizationTest.testAwait_countDownLatch_interrupted:159->assertWrapsInterruptedException:150 » NoClassDefFound Could not initialize class com.google.common.truth.Platform

And apparently I'm unable to find the root of that thus far

[alexey-pelykh]

The following line

assertThat(ex).hasCauseThat().isInstanceOf(NotSerializableException.class);

in SuppliersTest.java@152 seems to cause

java.lang.NoSuchMethodError: 'com.google.common.base.Supplier com.google.common.base.Suppliers.memoize(com.google.common.base.Supplier)'

yet debugging shows that it should be just fine:

I am puzzled 🤔