diff --git a/tests/core/pyspec/eth2spec/test/electra/sanity/test_slots.py b/tests/core/pyspec/eth2spec/test/electra/sanity/test_slots.py
new file mode 100644
index 0000000000..9ea506392b
--- /dev/null
+++ b/tests/core/pyspec/eth2spec/test/electra/sanity/test_slots.py
@@ -0,0 +1,134 @@
+from eth2spec.test.context import (
+    spec_state_test,
+    with_electra_and_later,
+)
+from eth2spec.test.helpers.deposits import prepare_pending_deposit
+from eth2spec.test.helpers.state import transition_to
+
+
+def run_epoch_processing(spec, state, pending_deposits=None, pending_consolidations=None):
+    if pending_deposits is None:
+        pending_deposits = []
+    if pending_consolidations is None:
+        pending_consolidations = []
+    # Transition to the last slot of the epoch
+    slot = state.slot + spec.SLOTS_PER_EPOCH - (state.slot % spec.SLOTS_PER_EPOCH) - 1
+    transition_to(spec, state, slot)
+    state.pending_deposits = pending_deposits
+    state.pending_consolidations = pending_consolidations
+    yield 'pre', state
+    yield 'slots', 1
+    spec.process_slots(state, state.slot + 1)
+    yield 'post', state
+
+    assert state.pending_deposits == []
+    assert state.pending_consolidations == []
+
+
+@with_electra_and_later
+@spec_state_test
+def test_multiple_pending_deposits_same_pubkey(spec, state):
+    # Create multiple deposits with the same pubkey
+    index = len(state.validators)
+    deposit = prepare_pending_deposit(spec, validator_index=index, amount=spec.MIN_ACTIVATION_BALANCE, signed=True)
+    pending_deposits = [deposit, deposit]
+
+    yield from run_epoch_processing(spec, state, pending_deposits=pending_deposits)
+
+    # Check deposit balance is applied correctly
+    assert state.balances[index] == sum(d.amount for d in pending_deposits)
+    assert state.validators[index].effective_balance == spec.MIN_ACTIVATION_BALANCE
+
+
+@with_electra_and_later
+@spec_state_test
+def test_multiple_pending_deposits_same_pubkey_compounding(spec, state):
+    # Create multiple deposits with the same pubkey and compounding creds
+    index = len(state.validators)
+    deposit = prepare_pending_deposit(
+        spec, validator_index=index, amount=spec.MIN_ACTIVATION_BALANCE, signed=True,
+        withdrawal_credentials=(spec.COMPOUNDING_WITHDRAWAL_PREFIX + b'\x00' * 11 + b'\x11' * 20)
+    )
+    pending_deposits = [deposit, deposit]
+
+    yield from run_epoch_processing(spec, state, pending_deposits=pending_deposits)
+
+    # Check deposit balance is applied correctly
+    assert state.balances[index] == sum(d.amount for d in pending_deposits)
+    assert state.validators[index].effective_balance == state.balances[index]
+
+
+@with_electra_and_later
+@spec_state_test
+def test_multiple_pending_deposits_same_pubkey_below_upward_threshold(spec, state):
+    # Create multiple deposits with top up lower than the upward threshold
+    index = len(state.validators)
+    deposit_0 = prepare_pending_deposit(
+        spec, validator_index=index,
+        amount=(spec.MIN_ACTIVATION_BALANCE - spec.EFFECTIVE_BALANCE_INCREMENT), signed=True
+    )
+    deposit_1 = prepare_pending_deposit(
+        spec, validator_index=index,
+        amount=spec.EFFECTIVE_BALANCE_INCREMENT, signed=True
+    )
+    pending_deposits = [deposit_0, deposit_1]
+
+    yield from run_epoch_processing(spec, state, pending_deposits=pending_deposits)
+
+    # Check deposit balance is applied correctly
+    assert state.balances[index] == sum(d.amount for d in pending_deposits)
+    assert state.validators[index].effective_balance == deposit_0.amount
+
+
+@with_electra_and_later
+@spec_state_test
+def test_multiple_pending_deposits_same_pubkey_above_upward_threshold(spec, state):
+    # Create multiple deposits with top up greater than the upward threshold
+    index = len(state.validators)
+    deposit_0 = prepare_pending_deposit(
+        spec, validator_index=index,
+        amount=(spec.MIN_ACTIVATION_BALANCE - spec.EFFECTIVE_BALANCE_INCREMENT), signed=True
+    )
+    amount = spec.EFFECTIVE_BALANCE_INCREMENT // spec.HYSTERESIS_QUOTIENT * spec.HYSTERESIS_UPWARD_MULTIPLIER + 1
+    deposit_1 = prepare_pending_deposit(spec, validator_index=index, amount=amount, signed=True)
+    pending_deposits = [deposit_0, deposit_1]
+
+    yield from run_epoch_processing(spec, state, pending_deposits)
+
+    # Check deposit balance is applied correctly
+    balance = state.balances[index]
+    assert balance == sum(d.amount for d in pending_deposits)
+    assert state.validators[index].effective_balance == balance - balance % spec.EFFECTIVE_BALANCE_INCREMENT
+
+
+@with_electra_and_later
+@spec_state_test
+def test_pending_consolidation(spec, state):
+    # Create pending consolidation
+    current_epoch = spec.get_current_epoch(state)
+    source_index = spec.get_active_validator_indices(state, current_epoch)[0]
+    target_index = spec.get_active_validator_indices(state, current_epoch)[1]
+    # Set withdrawable epoch to current epoch to allow processing
+    state.validators[source_index].withdrawable_epoch = current_epoch
+    # Set the source withdrawal credential to eth1
+    state.validators[target_index].withdrawal_credentials = (
+        spec.ETH1_ADDRESS_WITHDRAWAL_PREFIX + b"\x00" * 11 + b"\x11" * 20
+    )
+    # Set the target withdrawal credential to compounding
+    state.validators[target_index].withdrawal_credentials = (
+        spec.COMPOUNDING_WITHDRAWAL_PREFIX + b"\x00" * 11 + b"\x11" * 20
+    )
+    pending_consolidations = [spec.PendingConsolidation(source_index=source_index, target_index=target_index)]
+
+    assert state.balances[source_index] == spec.MIN_ACTIVATION_BALANCE
+    assert state.validators[source_index].effective_balance == spec.MIN_ACTIVATION_BALANCE
+    assert state.balances[target_index] == spec.MIN_ACTIVATION_BALANCE
+    assert state.validators[target_index].effective_balance == spec.MIN_ACTIVATION_BALANCE
+
+    yield from run_epoch_processing(spec, state, pending_consolidations=pending_consolidations)
+
+    # Check the consolidation is processed correctly
+    assert state.balances[source_index] == 0
+    assert state.validators[source_index].effective_balance == 0
+    assert state.balances[target_index] == spec.MIN_ACTIVATION_BALANCE * 2
+    assert state.validators[target_index].effective_balance == spec.MIN_ACTIVATION_BALANCE * 2
diff --git a/tests/generators/sanity/main.py b/tests/generators/sanity/main.py
index 8039b82a44..2145146856 100644
--- a/tests/generators/sanity/main.py
+++ b/tests/generators/sanity/main.py
@@ -33,6 +33,7 @@
     # do not forget to update sanity/block/__init__.py accordingly.
     _new_electra_mods = {key: 'eth2spec.test.electra.sanity.' + key for key in [
         'blocks',
+        'slots',
     ]}
     electra_mods = combine_mods(_new_electra_mods, deneb_mods)