mirror of
https://github.com/RustPython/RustPython.git
synced 2026-10-29 03:04:38 +08:00
Kwak Byoung Min
62f4c9895a
* Report observed StringIO newline types Constraint: Match CPython StringIO newline reporting without changing configured newline translation. Rejected: Separate newline-tracking representation | reuse the existing SeenNewline bitflags. Confidence: high Scope-risk: narrow Directive: Keep observed newline state separate from the configured newline mode. Tested: prek run --all-files; test_memoryio; cargo clippy -p rustpython-vm --lib -- -D warnings; workspace tests excluding the macOS C-API baseline SIGSEGV. Not-tested: Full macOS workspace suite is blocked by the existing rustpython-capi SIGSEGV; the Linux suite is running. Assisted-by: Codex:gpt-5.6-sol * Preserve StringIO state boundaries Reset observed newline state when StringIO is reinitialized and keep the property subject to closed-stream checks. Constraint: Match CPython StringIO reinitialization and closed-stream behavior. Rejected: Returning stale or cached newline state | violates StringIO lifecycle semantics. Confidence: high Scope-risk: narrow Directive: Keep observed newline state tied to the current open StringIO contents. Tested: cargo test --workspace --exclude rustpython_wasm --exclude rustpython-venvlauncher; cargo run --release -- extra_tests/snippets/stdlib_io_stringio.py; cargo run --release -- -m test test_memoryio; prek run --all-files; cargo clippy -p rustpython-vm --lib -- -D warnings. Assisted-by: Codex:gpt-5.6-sol
94 lines
1.7 KiB
Python
94 lines
1.7 KiB
Python
from io import StringIO
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def test_01():
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"""
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Test that the constructor and getvalue
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method return expected values
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"""
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string = "Test String 1"
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f = StringIO()
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f.write(string)
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assert f.tell() == len(string)
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assert f.getvalue() == string
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def test_02():
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"""
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Test that the read method (no arg)
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results the expected value
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"""
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string = "Test String 2"
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f = StringIO(string)
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assert f.read() == string
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assert f.read() == ""
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def test_03():
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"""
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Tests that the read method (integer arg)
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returns the expected value
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"""
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string = "Test String 3"
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f = StringIO(string)
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assert f.read(1) == "T"
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assert f.read(1) == "e"
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assert f.read(1) == "s"
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assert f.read(1) == "t"
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def test_04():
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"""
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Tests that the read method increments the
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cursor position and the seek method moves
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the cursor to the appropriate position
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"""
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string = "Test String 4"
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f = StringIO(string)
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assert f.read(4) == "Test"
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assert f.tell() == 4
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assert f.seek(0) == 0
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assert f.read(4) == "Test"
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def test_05():
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"""
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Tests readline
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"""
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string = "Test String 6\nnew line is here\nfinished"
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f = StringIO(string)
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assert f.readline() == "Test String 6\n"
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assert f.readline() == "new line is here\n"
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assert f.readline() == "finished"
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assert f.readline() == ""
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def test_06():
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f = StringIO(newline=None)
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f.write("\r")
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f.__init__("x\n", newline=None)
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assert f.newlines == "\n"
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f.close()
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try:
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f.newlines
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except ValueError:
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pass
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else:
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assert False
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if __name__ == "__main__":
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test_01()
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test_02()
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test_03()
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test_04()
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test_05()
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test_06()
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