njayaram2 commented on a change in pull request #363: Add tests for
madlib_keras_predict
URL: https://github.com/apache/madlib/pull/363#discussion_r271967465
##########
File path: src/ports/postgres/modules/deep_learning/test/madlib_keras.sql_in
##########
@@ -173,3 +172,36 @@ SELECT madlib_keras_predict(
'x',
$$ optimizer=SGD(lr=0.01, decay=1e-6, nesterov=True),
loss='categorical_crossentropy', metrics=['accuracy']$$::text,
'cifar10_predict');
+
+-- Validate that prediction output table exists and has correct schema
+SELECT assert(UPPER(atttypid::regtype::TEXT) = 'INTEGER', 'id column should be
INTEGER type')
+ FROM pg_attribute WHERE attrelid = 'cifar10_predict'::regclass
+ AND attname = 'id';
+
+SELECT assert(UPPER(atttypid::regtype::TEXT) =
+ 'DOUBLE PRECISION', 'prediction column should be DOUBLE PRECISION type')
+ FROM pg_attribute WHERE attrelid = 'cifar10_predict'::regclass
+ AND attname = 'prediction';
+
+-- Validate correct number of rows returned.
+SELECT assert(COUNT(*) = 2, "Output table of madlib_keras_predict should have
two rows") FROM cifar10_predict;
+
+-- First test that all values are in set of class values; if this breaks, it's
definitely a problem.
+SELECT assert(prediction in (0,1),'Predicted value not in set of defined class
values for model') FROM cifar10_predict;
+
+-- Then test that each of the two images is correctly predicted. If this
breaks, it's likely a different problem, or
+ -- possibly due to the test model we chose not being trained well enough.
Based on current testing, it looks
+ -- reliable.
+SELECT assert(prediction=0,'Predicted value not in set of defined class values
for model') FROM cifar10_predict WHERE id=1;
+SELECT assert(prediction=1,'Predicted value not in set of defined class values
for model') FROM cifar10_predict WHERE id=2;
+
+select assert(trap_error($$madlib_keras_predict(
+ 'keras_out',
+ 'cifar_10_sample_batched',
+ 'id',
+ 'model_arch',
+ 1,
+ 'x',
+ $$ optimizer=SGD(lr=0.01, decay=1e-6, nesterov=True),
loss='categorical_crossentropy', metrics=['accuracy']$$::text,
+ 'cifar10_predict');$$) = 1,
+ 'Passing batched image table to predict should error out.');
Review comment:
end with a new line please.
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