import keras
import pytest
from src.model_modules.inception_model import InceptionModelBase
from src.model_modules.advanced_paddings import ReflectionPadding2D, SymmetricPadding2D
class TestInceptionModelBase:
@pytest.fixture
def base(self):
# import keras
return InceptionModelBase()
@pytest.fixture
def input_x(self):
# import keras
return keras.Input(shape=(32, 32, 3))
@staticmethod
def step_in(element, depth=1):
# import keras
for _ in range(depth):
element = element.input._keras_history[0]
return element
def test_init(self, base):
# import keras
assert base.number_of_blocks == 0
assert base.part_of_block == 0
assert base.ord_base == 96
assert base.act_number == 0
def test_block_part_name(self, base):
# import keras
assert base.block_part_name() == chr(96)
base.part_of_block += 1
assert base.block_part_name() == 'a'
def test_create_conv_tower_3x3(self, base, input_x):
# import keras
opts = {'input_x': input_x, 'reduction_filter': 64, 'tower_filter': 32, 'tower_kernel': (3, 3),
'padding': 'SymPad2D'}
tower = base.create_conv_tower(**opts)
# check last element of tower (activation)
assert base.part_of_block == 1
assert tower.name == 'Block_0a_act_2/Relu:0'
act_layer = tower._keras_history[0]
assert isinstance(act_layer, keras.layers.advanced_activations.ReLU)
assert act_layer.name == "Block_0a_act_2"
# check previous element of tower (conv2D)
conv_layer = self.step_in(act_layer)
assert isinstance(conv_layer, keras.layers.Conv2D)
assert conv_layer.filters == 32
assert conv_layer.padding == 'valid'
assert conv_layer.kernel_size == (3, 3)
assert conv_layer.strides == (1, 1)
assert conv_layer.name == "Block_0a_3x3"
# check previous element of tower (padding)
pad_layer = self.step_in(conv_layer)
assert isinstance(pad_layer, SymmetricPadding2D)
assert pad_layer.padding == ((1, 1), (1, 1))
assert pad_layer.name == 'Block_0a_Pad'
# check previous element of tower (activation)
act_layer2 = self.step_in(pad_layer)
assert isinstance(act_layer2, keras.layers.advanced_activations.ReLU)
assert act_layer2.name == "Block_0a_act_1"
# check previous element of tower (conv2D)
conv_layer2 = self.step_in(act_layer2)
assert isinstance(conv_layer2, keras.layers.Conv2D)
assert conv_layer2.filters == 64
assert conv_layer2.kernel_size == (1, 1)
assert conv_layer2.padding == 'valid'
assert conv_layer2.name == 'Block_0a_1x1'
assert conv_layer2.input._keras_shape == (None, 32, 32, 3)
def test_create_conv_tower_3x3_activation(self, base, input_x):
# import keras
opts = {'input_x': input_x, 'reduction_filter': 64, 'tower_filter': 32, 'tower_kernel': (3, 3)}
# create tower with standard activation function
tower = base.create_conv_tower(activation='tanh', **opts)
assert tower.name == 'Block_0a_act_2_tanh/Tanh:0'
act_layer = tower._keras_history[0]
assert isinstance(act_layer, keras.layers.core.Activation)
assert act_layer.name == "Block_0a_act_2_tanh"
# create tower with activation function class
tower = base.create_conv_tower(activation=keras.layers.LeakyReLU, **opts)
assert tower.name == 'Block_0b_act_2/LeakyRelu:0'
act_layer = tower._keras_history[0]
assert isinstance(act_layer, keras.layers.advanced_activations.LeakyReLU)
assert act_layer.name == "Block_0b_act_2"
def test_create_conv_tower_1x1(self, base, input_x):
# import keras
opts = {'input_x': input_x, 'reduction_filter': 64, 'tower_filter': 32, 'tower_kernel': (1, 1)}
tower = base.create_conv_tower(**opts)
# check last element of tower (activation)
assert base.part_of_block == 1
assert tower.name == 'Block_0a_act_1_1/Relu:0'
act_layer = tower._keras_history[0]
assert isinstance(act_layer, keras.layers.advanced_activations.ReLU)
assert act_layer.name == "Block_0a_act_1"
# check previous element of tower (conv2D)
conv_layer = self.step_in(act_layer)
assert isinstance(conv_layer, keras.layers.Conv2D)
assert conv_layer.filters == 32
assert conv_layer.padding == 'valid'
assert conv_layer.kernel_size == (1, 1)
assert conv_layer.strides == (1, 1)
assert conv_layer.name == "Block_0a_1x1"
assert conv_layer.input._keras_shape == (None, 32, 32, 3)
def test_create_conv_towers(self, base, input_x):
# import keras
opts = {'input_x': input_x, 'reduction_filter': 64, 'tower_filter': 32, 'tower_kernel': (3, 3)}
_ = base.create_conv_tower(**opts)
tower = base.create_conv_tower(**opts)
assert base.part_of_block == 2
assert tower.name == 'Block_0b_act_2_1/Relu:0'
def test_create_pool_tower(self, base, input_x):
# import keras
opts = {'input_x': input_x, 'pool_kernel': (3, 3), 'tower_filter': 32}
tower = base.create_pool_tower(**opts)
# check last element of tower (activation)
assert base.part_of_block == 1
# assert tower.name == 'Block_0a_act_1/Relu:0'
assert tower.name == 'Block_0a_act_1_3/Relu:0'
act_layer = tower._keras_history[0]
assert isinstance(act_layer, keras.layers.advanced_activations.ReLU)
assert act_layer.name == "Block_0a_act_1"
# check previous element of tower (conv2D)
conv_layer = self.step_in(act_layer)
assert isinstance(conv_layer, keras.layers.Conv2D)
assert conv_layer.filters == 32
assert conv_layer.padding == 'valid'
assert conv_layer.kernel_size == (1, 1)
assert conv_layer.strides == (1, 1)
assert conv_layer.name == "Block_0a_1x1"
# check previous element of tower (maxpool)
pool_layer = self.step_in(conv_layer)
assert isinstance(pool_layer, keras.layers.pooling.MaxPooling2D)
assert pool_layer.name == "Block_0a_MaxPool"
assert pool_layer.pool_size == (3, 3)
assert pool_layer.padding == 'valid'
# check previous element of tower(padding)
pad_layer = self.step_in(pool_layer)
assert isinstance(pad_layer, keras.layers.convolutional.ZeroPadding2D)
assert pad_layer.name == "Block_0a_Pad"
assert pad_layer.padding == ((1, 1), (1, 1))
# check avg pool tower
opts = {'input_x': input_x, 'pool_kernel': (3, 3), 'tower_filter': 32}
tower = base.create_pool_tower(max_pooling=False, **opts)
pool_layer = self.step_in(tower._keras_history[0], depth=2)
assert isinstance(pool_layer, keras.layers.pooling.AveragePooling2D)
assert pool_layer.name == "Block_0b_AvgPool"
assert pool_layer.pool_size == (3, 3)
assert pool_layer.padding == 'valid'
def test_inception_block(self, base, input_x):
# import keras
conv = {'tower_1': {'reduction_filter': 64,
'tower_kernel': (3, 3),
'tower_filter': 64, },
'tower_2': {'reduction_filter': 64,
'tower_kernel': (5, 5),
'tower_filter': 64,
'activation': 'tanh',
'padding': 'SymPad2D', },
}
pool = {'pool_kernel': (3, 3), 'tower_filter': 64, 'padding': ReflectionPadding2D}
opts = {'input_x': input_x, 'tower_conv_parts': conv, 'tower_pool_parts': pool}
block = base.inception_block(**opts)
assert base.number_of_blocks == 1
concatenated = block._keras_history[0].input
assert len(concatenated) == 4
block_1a, block_1b, block_pool1, block_pool2 = concatenated
assert block_1a.name == 'Block_1a_act_2/Relu:0' # <- sometimes keras changes given name (I don't know why yet)
assert block_1b.name == 'Block_1b_act_2_tanh/Tanh:0'
assert block_pool1.name == 'Block_1c_act_1/Relu:0'
assert block_pool2.name == 'Block_1d_act_1/Relu:0'
assert self.step_in(block_1a._keras_history[0]).name == "Block_1a_3x3"
assert self.step_in(block_1b._keras_history[0]).name == "Block_1b_5x5"
assert self.step_in(block_1a._keras_history[0], depth=2).name == 'Block_1a_Pad'
assert isinstance(self.step_in(block_1a._keras_history[0], depth=2), keras.layers.ZeroPadding2D)
assert self.step_in(block_1b._keras_history[0], depth=2).name == 'Block_1b_Pad'
assert isinstance(self.step_in(block_1b._keras_history[0], depth=2), SymmetricPadding2D)
# pooling
assert isinstance(self.step_in(block_pool1._keras_history[0], depth=2), keras.layers.pooling.MaxPooling2D)
assert self.step_in(block_pool1._keras_history[0], depth=3).name == 'Block_1c_Pad'
assert isinstance(self.step_in(block_pool1._keras_history[0], depth=3), ReflectionPadding2D)
assert isinstance(self.step_in(block_pool2._keras_history[0], depth=2), keras.layers.pooling.AveragePooling2D)
assert self.step_in(block_pool2._keras_history[0], depth=3).name == 'Block_1d_Pad'
assert isinstance(self.step_in(block_pool2._keras_history[0], depth=3), ReflectionPadding2D)
# next block
opts['input_x'] = block
opts['tower_pool_parts']['max_pooling'] = True
block = base.inception_block(**opts)
assert base.number_of_blocks == 2
concatenated = block._keras_history[0].input
assert len(concatenated) == 3
block_2a, block_2b, block_pool = concatenated
assert block_2a.name == 'Block_2a_act_2/Relu:0'
assert block_2b.name == 'Block_2b_act_2_tanh/Tanh:0'
assert block_pool.name == 'Block_2c_act_1/Relu:0'
# block 2a
assert self.step_in(block_2a._keras_history[0]).name == "Block_2a_3x3"
assert self.step_in(block_2a._keras_history[0], depth=2).name == "Block_2a_Pad"
assert isinstance(self.step_in(block_2a._keras_history[0], depth=2), keras.layers.ZeroPadding2D)
# block 2b
assert self.step_in(block_2b._keras_history[0]).name == "Block_2b_5x5"
assert self.step_in(block_2b._keras_history[0], depth=2).name == "Block_2b_Pad"
assert isinstance(self.step_in(block_2b._keras_history[0], depth=2), SymmetricPadding2D)
# block pool
assert isinstance(self.step_in(block_pool._keras_history[0], depth=2), keras.layers.pooling.MaxPooling2D)
assert self.step_in(block_pool._keras_history[0], depth=3).name == 'Block_2c_Pad'
assert isinstance(self.step_in(block_pool._keras_history[0], depth=3), ReflectionPadding2D)
def test_batch_normalisation(self, base, input_x):
# import keras
base.part_of_block += 1
bn = base.batch_normalisation(input_x)._keras_history[0]
assert isinstance(bn, keras.layers.normalization.BatchNormalization)
assert bn.name == "Block_0a_BN"
def test_padding_layer_zero_padding(self, base, input_x):
# import keras
padding_size = ((1, 1), (0, 0))
zp = base.padding_layer('ZeroPad2D')
assert zp == keras.layers.convolutional.ZeroPadding2D
assert base.padding_layer('ZeroPadding2D') == keras.layers.convolutional.ZeroPadding2D
assert base.padding_layer(keras.layers.ZeroPadding2D) == keras.layers.convolutional.ZeroPadding2D
assert zp.__name__ == 'ZeroPadding2D'
zp_ap = zp(padding=padding_size)(input_x)
assert zp_ap._keras_history[0].padding == ((1, 1), (0, 0))
def test_padding_layer_sym_padding(self, base, input_x):
# import keras
padding_size = ((1, 1), (0, 0))
zp = base.padding_layer('SymPad2D')
assert zp == SymmetricPadding2D
assert base.padding_layer('SymmetricPadding2D') == SymmetricPadding2D
assert base.padding_layer(SymmetricPadding2D) == SymmetricPadding2D
assert zp.__name__ == 'SymmetricPadding2D'
zp_ap = zp(padding=padding_size)(input_x)
assert zp_ap._keras_history[0].padding == ((1, 1), (0, 0))
def test_padding_layer_ref_padding(self, base, input_x):
# import keras
padding_size = ((1, 1), (0, 0))
zp = base.padding_layer('RefPad2D')
assert zp == ReflectionPadding2D
assert base.padding_layer('ReflectionPadding2D') == ReflectionPadding2D
assert base.padding_layer(ReflectionPadding2D) == ReflectionPadding2D
assert zp.__name__ == 'ReflectionPadding2D'
zp_ap = zp(padding=padding_size)(input_x)
assert zp_ap._keras_history[0].padding == ((1, 1), (0, 0))
def test_padding_layer_raises(self, base, input_x):
# import keras
with pytest.raises(NotImplementedError) as einfo:
base.padding_layer('FalsePadding2D')
assert "`'FalsePadding2D'' is not implemented as padding. " \
"Use one of those: i) `RefPad2D', ii) `SymPad2D', iii) `ZeroPad2D'" in str(einfo.value)
with pytest.raises(TypeError) as einfo:
base.padding_layer(keras.layers.Conv2D)
assert "`Conv2D' is not a valid padding layer type. Use one of those: "\
"i) ReflectionPadding2D, ii) SymmetricPadding2D, iii) ZeroPadding2D" in str(einfo.value)