diff --git a/markarth/convert/cythonize/_import.py b/markarth/convert/cythonize/_import.py
index ba98498..84d1220 100644
--- a/markarth/convert/cythonize/_import.py
+++ b/markarth/convert/cythonize/_import.py
@@ -37,7 +37,7 @@ def cython_imported_already(mod_ast : ast.Module) -> tuple[bool, str, int]:
     return (False, '', 0)
 
 
-def gen_import_line(cy_alias : str | None) -> str:
+def gen_import_line(cy_alias : str | None = None) -> str:
     '''
     gen_import_line generates an import cython line
     '''
diff --git a/markarth/convert/cythonize/base.py b/markarth/convert/cythonize/base.py
index fdf59fc..73ca031 100644
--- a/markarth/convert/cythonize/base.py
+++ b/markarth/convert/cythonize/base.py
@@ -55,6 +55,7 @@ def cythonify(
 
     # at first i shall check if cython is imported, and in such case i consider
     # its alias
+    alias = '' # TODO: remove this line once you're back pyx tests
     if clogic.cython_import_needed:
 
         is_cython_imported, alias, codeline_no = cython_imported_already(mod_ast)
@@ -63,8 +64,9 @@ def cythonify(
             alias = DEFAULT_CY_ALIAS
     # in case the conversion logic does not require me to have a cython import,
     # the alias variable is however set to be passed as a parameter to other functions
-    else:
-        alias = ''
+    # TODO: decomment below once you have tests for pyx
+#    else:
+#        alias = ''
 
     # function names sorted in order of appearance, as it's more practical to modify
     # them from the last to the first, so that last functions to be modified won't have
diff --git a/tests/test_cythonize_pure.py b/tests/test_cythonify_utils.py
similarity index 86%
rename from tests/test_cythonize_pure.py
rename to tests/test_cythonify_utils.py
index 892817c..5331be4 100644
--- a/tests/test_cythonize_pure.py
+++ b/tests/test_cythonify_utils.py
@@ -1,4 +1,4 @@
-'''import pytest
+import pytest
 
 import ast
 
@@ -8,11 +8,16 @@
     collect_func_defs
 )
 from markarth.convert.cythonize.cy_typs import CyFloat, CyInt
-from markarth.convert.cythonize.pure import (
+from markarth.convert.cythonize._import import (
     cython_imported_already,
+    gen_import_line
+)
+from markarth.convert.cythonize.pure_funcs.declare_gen import (
     typ_store_to_varnames,
     typ_store_to_cdeclares,
-    gen_declare_line,
+    gen_declare_line
+)
+from markarth.convert.cythonize.base import (
     could_be_docstring,
     cdeclares_ins_point,
     sort_funcs_by_line
@@ -32,6 +37,11 @@ def test_is_cython_imported(code1, mod2):
     assert line_no == 2
 
 
+def test_gen_import_line():
+    assert gen_import_line() == 'import cython'
+    assert gen_import_line(cy_alias='cy') == 'import cython as cy'
+
+
 def test_typ_store_to_varnames():
     typ_store = DictTypStore({
         'a' : TypPrimitive(PrimitiveCod.INT),
@@ -43,7 +53,8 @@ def test_typ_store_to_varnames():
     tuples = set(typ_store_to_varnames(
         typ_store = typ_store,
         default_cy_int=CyInt.INT,
-        default_cy_float=CyFloat.FLOAT
+        default_cy_float=CyFloat.FLOAT,
+        imposed_vars=dict()
     ))
 
     expected_tuples = {
@@ -91,7 +102,9 @@ def test_typ_store_to_cdeclares():
         typ_store_to_cdeclares(
             typ_store = typ_store,
             default_cy_int=CyInt.INT,
-            default_cy_float=CyFloat.FLOAT
+            default_cy_float=CyFloat.FLOAT,
+            cy_alias='cython',
+            imposed_vars=dict()
         )
     )
 
@@ -117,6 +130,7 @@ def test_typ_store_to_cdeclares_imposed_vars():
             typ_store = typ_store,
             default_cy_int=CyInt.INT,
             default_cy_float=CyFloat.FLOAT,
+            cy_alias='cython',
             imposed_vars={'a':CyInt.LONG}
         )
     )
@@ -139,7 +153,8 @@ def test_gen_declare_line():
 
     assert gen_declare_line(
         varname='vv',
-        cy_typename='float'
+        cy_typename='float',
+        cy_alias='cython'
     ) == 'vv = cython.declare(cython.float)'
 
 
@@ -179,11 +194,11 @@ def test_cdeclares_ins_point(mod3, mod10):
 
     assert cdeclares_ins_point(func_asts['f1']) == 8
     assert cdeclares_ins_point(func_asts['f2']) == 15
-    assert cdeclares_ins_point(func_asts['f3']) == 19'''
+    assert cdeclares_ins_point(func_asts['f3']) == 19
 
     # testing the case of a docstring as the only element of a code section
-    ####cod = """def func():\n\t'''a docstring'''"""
-''' mod_ast = ast.parse(cod)
+    cod = """def func():\n\t'''a docstring'''"""
+    mod_ast = ast.parse(cod)
     func_asts = collect_func_defs(mod_ast)
 
     assert cdeclares_ins_point(func_asts['func']) == 2
@@ -203,4 +218,4 @@ def test_sort_funcs_by_line(mod3):
 
 
 def test_pure(mod3):
-    pass'''
\ No newline at end of file
+    pass
\ No newline at end of file
diff --git a/tests/test_pure_typs_conv.py b/tests/test_pure_typs_conv.py
new file mode 100644
index 0000000..7e20650
--- /dev/null
+++ b/tests/test_pure_typs_conv.py
@@ -0,0 +1,20 @@
+'''
+aimed at testing how cy_typs are converted into cython
+'''
+
+
+from markarth.convert.cythonize.cy_typs import CyFloat, CyInt
+from markarth.convert.cythonize.pure_funcs.typs_conv import (
+    cy_int_str_pure,
+    cy_float_str_pure
+)
+
+def test_cy_int_str_pure():
+    assert cy_int_str_pure(CyInt.SHORT) == 'short'
+    assert cy_int_str_pure(CyInt.INT) == 'int'
+    assert cy_int_str_pure(CyInt.LONG) == 'long'
+    assert cy_int_str_pure(CyInt.LONGLONG) == 'longlong'
+
+def test_cy_float_str_pure():
+    assert cy_float_str_pure(CyFloat.FLOAT) == 'float'
+    assert cy_float_str_pure(CyFloat.DOUBLE) == 'double'
\ No newline at end of file