Test: Default blocksize yields 3 blocks (NYC_Taxi)

Author: siboehm

README.md

@@ -5,7 +5,7 @@
 
 A LLVM-based compiler for LightGBM decision trees.
 
-`lleaves` converts trained LightGBM models to optimized machine code, speeding-up inference by ≥10x.
+`lleaves` converts trained LightGBM models to optimized machine code, speeding-up prediction by ≥10x.
 
 ## Example
 
@@ -51,9 +51,9 @@ mix of categorical and numerical features.
 |``lleaves``  | 5.90ms  | 56.96ms | 388.88ms |
 
 ## Advanced usage
-To avoid any Python overhead during inference you can link against the generated binary.
-For an example of how to do this see `benchmarks/c_bench/`.
-The function signature might change between major versions.
+To avoid any Python overhead during prediction you can link directly against the generated binary.
+See `benchmarks/c_bench/` for an example of how to do this.
+The function signature can change between major versions.
 
 ## Development
 ```bash

tests/test_compile_flags.py

@@ -20,8 +20,7 @@ def NYC_data():
     return feature_enginering().fit_transform(df).astype(np.float64)
 
 
-# we don't test the default, which is 34
-@pytest.mark.parametrize("blocksize", [1, 100])
+@pytest.mark.parametrize("blocksize", [1, 34, 100])
 def test_cache_blocksize(blocksize, NYC_data):
     llvm_model = Model(model_file="tests/models/NYC_taxi/model.txt")
     lgbm_model = Booster(model_file="tests/models/NYC_taxi/model.txt")
@@ -39,6 +38,12 @@ def test_cache_blocksize(blocksize, NYC_data):
         assert "instr-block-setup.1:" in stdout
         assert "instr-block-setup.99:" in stdout
         assert "instr-block-setup.100:" not in stdout
+    if blocksize == 34:
+        # NYC_taxi has 100 trees, hence blocksize 34 should create 3 blocks
+        assert "instr-block-setup.1:" in stdout
+        assert "instr-block-setup.2:" in stdout
+        assert "instr-block-setup.3:" not in stdout
+        assert "instr-block-setup.4:" not in stdout
     if blocksize == 100:
         assert "instr-block-setup.1:" not in stdout
         assert "instr-block-setup.2:" not in stdout