Merge pull request RustPython#802 from andrew-ld/master

use a code generator for not implemented tests

Author: windelbouwman

tests/.gitignore

@@ -0,0 +1 @@
+snippets/whats_left_to_implement.py

tests/README.md

@@ -1,11 +1,14 @@
-
 # Test snippets
 
 This directory contains two sets of test snippets which can be run in
 Python.  The `snippets/` directory contains functional tests, and the
 `benchmarks/` directory contains snippets for use in benchmarking
 RustPython's performance.
 
+## Generates the test for not implemented methods
+
+run using cpython not_impl_gen.py it automatically generate a
+test snippet to check not yet implemented methods
 
 ## Running with CPython + RustPython
 
@@ -15,4 +18,3 @@ compilation to bytecode. When this is done, run the bytecode with rustpython.
 ## Running with RustPython
 
 The other option is to run all snippets with RustPython.
-

tests/generator/not_impl_footer.txt

@@ -0,0 +1,12 @@
+not_implemented = [(name, method)
+                   for name, (val, methods) in expected_methods.items()
+                   for method in methods
+                   if not hasattr(val, method)]
+
+for r in not_implemented:
+    print(r[0], ".", r[1], sep="")
+if not not_implemented:
+    print("Not much \\o/")
+
+if platform.python_implementation() == "CPython":
+    assert len(not_implemented) == 0, "CPython should have all the methods"

tests/generator/not_impl_header.txt

@@ -0,0 +1,7 @@
+# WARNING: THIS IS AN AUTOMATICALLY GENERATED FILE
+# EDIT tests/not_impl_gen.py, NOT THIS FILE.
+# RESULTS OF THIS TEST DEPEND ON THE CPYTHON
+# VERSION USED TO RUN not_impl_gen.py
+
+import platform
+

tests/not_impl_gen.py

@@ -0,0 +1,33 @@
+objects = [
+    bool,
+    bytearray,
+    bytes,
+    complex,
+    dict,
+    float,
+    frozenset,
+    int,
+    iter,
+    list,
+    memoryview,
+    range,
+    set,
+    str,
+    tuple,
+    object
+]
+
+header = open("generator/not_impl_header.txt")
+footer = open("generator/not_impl_footer.txt")
+output = open("snippets/whats_left_to_implement.py", "w")
+
+output.write(header.read())
+output.write("expected_methods = {\n")
+
+for obj in objects:
+    output.write(f" '{obj.__name__}': ({obj.__name__}, [\n")
+    output.write("\n".join(f"  '{attr}'," for attr in dir(obj)))
+    output.write("\n ])," + ("\n" if objects[-1] == obj else "\n\n"))
+
+output.write("}\n\n")
+output.write(footer.read())