Add more tests

Author: pablogsal

Lib/test/test_import/data/lazy_imports/broken_attr_module.py

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+# Module that exists but doesn't have expected attributes
+x = 42
+# No 'nonexistent_attr' here

Lib/test/test_import/data/lazy_imports/broken_module.py

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+# Module that raises an error during import
+raise ValueError("This module always fails to import")

Lib/test/test_import/data/lazy_imports/globals_access.py

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+# Test that globals() returns lazy proxy objects without reifying
+lazy import test.test_import.data.lazy_imports.basic2 as basic2
+
+def get_from_globals():
+    g = globals()
+    return g['basic2']
+
+def get_direct():
+    return basic2

Lib/test/test_import/data/lazy_imports/lazy_class_body.py

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+# SyntaxError: lazy import inside class body is not allowed
+class Foo:
+    lazy import json

Lib/test/test_import/data/lazy_imports/lazy_compat_from.py

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+# Test __lazy_modules__ with from imports
+__lazy_modules__ = ['test.test_import.data.lazy_imports.basic2']
+from test.test_import.data.lazy_imports.basic2 import x, f
+
+def get_x():
+    return x

Lib/test/test_import/data/lazy_imports/multi_from_import.py

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+# Test that lazy from import with multiple names only reifies accessed names
+lazy from test.test_import.data.lazy_imports.basic2 import f, x
+
+def get_globals():
+    return globals()

Lib/test/test_import/data/lazy_imports/relative_lazy.py

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+# Test relative imports with lazy keyword
+lazy from . import basic2
+
+def get_basic2():
+    return basic2

Lib/test/test_import/data/lazy_imports/relative_lazy_from.py

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+# Test relative from imports with lazy keyword
+lazy from .basic2 import x, f
+
+def get_x():
+    return x
+
+def get_f():
+    return f