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| # Copyright 2026 DeepMind Technologies Limited. | |
| # | |
| # Licensed under the Apache License, Version 2.0 (the "License"); | |
| # you may not use this file except in compliance with the License. | |
| # You may obtain a copy of the License at | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, software | |
| # distributed under the License is distributed on an "AS IS" BASIS, | |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| # See the License for the specific language governing permissions and | |
| # limitations under the License. | |
| from gemma import peft | |
| def test_split_params(): | |
| params = { | |
| 'dense': { | |
| 'kernel': 0, | |
| 'bias': 1, | |
| 'lora': { | |
| 'a': 0, | |
| 'b': 1, | |
| }, | |
| }, | |
| 'branch_with_only_lora': { | |
| 'lora': { | |
| 'a': 0, | |
| 'b': 1, | |
| }, | |
| }, | |
| 'other': 0, | |
| # Nested branches are fully removed from the lora tree. | |
| 'b': {'f': {'a': {}}}, | |
| } | |
| original, lora = peft.split_params(params) | |
| assert original == { | |
| 'dense': { | |
| 'kernel': 0, | |
| 'bias': 1, | |
| }, | |
| 'branch_with_only_lora': {}, | |
| 'other': 0, | |
| 'b': {'f': {'a': {}}}, | |
| } | |
| assert lora == { | |
| 'dense': { | |
| 'lora': { | |
| 'a': 0, | |
| 'b': 1, | |
| }, | |
| }, | |
| 'branch_with_only_lora': { | |
| 'lora': { | |
| 'a': 0, | |
| 'b': 1, | |
| }, | |
| }, | |
| } | |
| assert peft.merge_params(original, lora) == params | |