ParametersTest.testCustomParameters fails for test-guice-version=5.0.1

[mcculls]

[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.eclipse.sisu.wire.ParametersTest
[ERROR] Tests run: 2, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.659 s <<< FAILURE! - in org.eclipse.sisu.wire.ParametersTest
[ERROR] org.eclipse.sisu.wire.ParametersTest.testCustomParameters  Time elapsed: 0.143 s  <<< ERROR!
com.google.inject.CreationException: 
Unable to create injector, see the following errors:

1) An exception was caught and reported. Message: This Provider cannot be used until the Injector has been created.
  at [unknown source]

2) [Guice/MissingImplementation]: No implementation for String[] annotated with @Parameters() was bound.

Requested by:
1  : ParametersTest.arguments(ParametersTest.java:26)
      \_ for field arguments
     at ParametersTest$2.configure(ParametersTest.java:60)
      \_ installed by: WireModule -> ParametersTest$2

Learn more:
  https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION

3) [Guice/MissingImplementation]: No implementation for Map<String, String> annotated with @Parameters() was bound.

Requested by:
1  : ParametersTest.properties(ParametersTest.java:26)
      \_ for field properties
     at ParametersTest$2.configure(ParametersTest.java:60)
      \_ installed by: WireModule -> ParametersTest$2

Learn more:
  https://github.com/google/guice/wiki/MISSING_IMPLEMENTATION

3 errors

======================
Full classname legend:
======================
Parameters:       "org.eclipse.sisu.Parameters"
ParametersTest:   "org.eclipse.sisu.wire.ParametersTest"
ParametersTest$2: "org.eclipse.sisu.wire.ParametersTest$2"
WireModule:       "org.eclipse.sisu.wire.WireModule"
========================
End of classname legend:
========================

	at org.eclipse.sisu.wire.ParametersTest.testCustomParameters(ParametersTest.java:55)
Caused by: java.lang.IllegalStateException: This Provider cannot be used until the Injector has been created.
	at org.eclipse.sisu.wire.ParametersTest.testCustomParameters(ParametersTest.java:55)

[mcculls]

This also happens for test-guice-version=4.2.0

[mcculls]

The underlying issue is in ElementAnalyzer.mergeParameters where it attempts to merge different sources of parameters into a single map or sequence. It assumes that @Provides bindings can be called immediately, which is true for the test when using Guice 4.1.0 or earlier but isn't true for Guice 4.2.0 or later.

The solution will be to do the merge lazily, caching the result to avoid having to merge it on every request.

[mcculls]

Fixed by #41