ws50529
100 lines
3.4 KiB
Python
100 lines
3.4 KiB
Python
import asyncio
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import io
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import unittest
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from fastapi import HTTPException, UploadFile
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from fastapi.responses import JSONResponse
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from dea_api import BodeParams, DesignParams, add_security_headers, calculate_bode, design_filter, filter_csv
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class DeaApiTest(unittest.TestCase):
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def test_design_returns_normalized_coefficients_for_default_lowpass(self):
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body = design_filter(
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DesignParams(
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filter_type="Lowpass (低通)",
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fs=100000,
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lp_fc=1000,
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lp_order=1,
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)
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)
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self.assertGreater(len(body["b"]), 0)
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self.assertGreater(len(body["a"]), 0)
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self.assertAlmostEqual(body["a"][0], 1.0)
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def test_design_rejects_cutoff_at_or_above_nyquist(self):
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try:
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design_filter(
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DesignParams(
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filter_type="Lowpass (低通)",
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fs=1000,
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lp_fc=500,
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lp_order=1,
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)
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)
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except HTTPException as exc:
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self.assertEqual(exc.status_code, 400)
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self.assertIn("Nyquist", exc.detail)
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else:
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raise AssertionError("Expected Nyquist validation to fail")
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def test_design_supports_2p1z_filter(self):
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body = design_filter(
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DesignParams(
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filter_type="2P1Z (二極一零)",
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fs=100000,
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tp1z_fz=200,
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tp1z_fp1=10,
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tp1z_fp2=5000,
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)
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)
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self.assertEqual(len(body["b"]), 3)
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self.assertEqual(len(body["a"]), 3)
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self.assertAlmostEqual(body["a"][0], 1.0)
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def test_bode_rejects_zero_a0(self):
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try:
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calculate_bode(BodeParams(fs=1000, b=[1.0], a=[0.0, 1.0]))
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except HTTPException as exc:
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self.assertEqual(exc.status_code, 400)
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self.assertIn("a[0]", exc.detail)
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else:
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raise AssertionError("Expected a[0] validation to fail")
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def test_filter_downsamples_plot_response_for_large_csv(self):
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rows = ["value"] + [str(i) for i in range(6001)]
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upload = UploadFile(
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io.BytesIO(("\n".join(rows) + "\n").encode("utf-8")),
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filename="input.csv",
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)
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body = asyncio.run(filter_csv(file=upload, b="1", a="1", col_idx=0))
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self.assertEqual(body["total_points"], 6001)
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self.assertLessEqual(body["plot_points"], 5000)
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self.assertGreater(body["downsample_step"], 1)
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def test_filter_rejects_non_numeric_signal_column(self):
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upload = UploadFile(io.BytesIO(b"value\n1\nbad\n3\n"), filename="input.csv")
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try:
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asyncio.run(filter_csv(file=upload, b="1", a="1", col_idx=0))
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except HTTPException as exc:
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self.assertEqual(exc.status_code, 400)
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self.assertIn("非數值", exc.detail)
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else:
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raise AssertionError("Expected non-numeric column validation to fail")
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def test_security_headers_are_applied(self):
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response = add_security_headers(JSONResponse({"ok": True}))
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self.assertEqual(response.headers["X-Content-Type-Options"], "nosniff")
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self.assertEqual(response.headers["X-Frame-Options"], "DENY")
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self.assertIn("frame-ancestors 'none'", response.headers["Content-Security-Policy"])
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self.assertNotIn("unsafe-eval", response.headers["Content-Security-Policy"])
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