Issue with Layer.mergeAll and Environment Variables in Unit Test

it.effect('should be able to get a foobar by id', () =>
            E.gen(function* () {
                dynamodbMock
                    .reset()
                    .on(GetCommand)
                    .resolvesOnce({
                        Item: {
                            PK: mockFoobar.id,
                            ...mockFoobar,
                        },
                    })

                const foobarStore = yield* FoobarStore
                const result = yield* foobarStore.get(mockFoobar.id)

                expect(result.id).toEqual(mockFoobar.id)
                expect(result.name).toEqual(mockFoobar.name)
            }).pipe(E.provide(FoobarStore.Default), E.provide(MockConfigLayer)), // PASSES
            // }).pipe(E.provide(Layer.mergeAll(FoobarStore.Default, MockConfigLayer))) // FAILS with FOOBAR_TABLE not found
        )

export const MockConfigLayer = Layer.setConfigProvider(
    ConfigProvider.fromJson({
        FOOBAR_TABLE: 'foobar-table-test',
    }),
)