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120 lines
4.3 KiB
120 lines
4.3 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2016 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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import os
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import unittest
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from vts.utils.python.coverage import arc_summary
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from vts.utils.python.coverage import block_summary
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class ArcSummaryTest(unittest.TestCase):
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"""Tests for ArcSummary of vts.utils.python.coverage.
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"""
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def testResolveRemove(self):
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"""Verifies that fake, non-fallthrough arc are resolved correctly.
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The arc should be removed as an exit arc from the source.
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"""
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src = block_summary.BlockSummary(0, 0)
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dst = block_summary.BlockSummary(1, 0)
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flag = arc_summary.ArcSummary.GCOV_ARC_FAKE
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arc = arc_summary.ArcSummary(src, dst, flag)
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src.exit_arcs.append(arc)
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dst.entry_arcs.append(arc)
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self.assertTrue(arc.Resolve())
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self.assertEqual(len(src.exit_arcs), 0)
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def testResolveFromSource(self):
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"""Verifies that arcs can be resolved from the source.
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In the case when the source has fully-resolved entry arcs, the arc
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count should be resolved from the source. I.e. there is only one
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missing arc and it can be solved for from the source.
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"""
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middle = block_summary.BlockSummary(-1, 0)
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n = 10
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# Create resolved arcs entering the middle block
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for ident in range(n):
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block = block_summary.BlockSummary(ident, 0)
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arc = arc_summary.ArcSummary(block, middle, 0)
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arc.resolved = True
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arc.count = 1
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block.exit_arcs.append(arc)
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middle.entry_arcs.append(arc)
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# Create resolved arcs exiting the middle block
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for ident in range(n, 2 * n - 1):
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block = block_summary.BlockSummary(ident, 0)
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arc = arc_summary.ArcSummary(middle, block, 0)
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arc.resolved = True
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arc.count = 1
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block.entry_arcs.append(arc)
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middle.exit_arcs.append(arc)
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# Create one unresolved arc exiting the middle
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last = block_summary.BlockSummary(2 * n - 1, 0)
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arc = arc_summary.ArcSummary(middle, last, 0)
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middle.exit_arcs.append(arc)
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last.entry_arcs.append(arc)
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self.assertTrue(arc.Resolve())
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self.assertTrue(arc.resolved)
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self.assertEqual(arc.count, 1)
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def testResolveFromDest(self):
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"""Verifies that arcs can be resolved from the destination block.
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In the case when the source has fully-resolved exit arcs, the arc
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count should be resolved from the source. I.e. there is only one
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missing arc and it can be solved for from the destination.
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"""
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middle = block_summary.BlockSummary(-1, 0)
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n = 10
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# Create resolved arcs exiting the middle block
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for ident in range(n):
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block = block_summary.BlockSummary(ident, 0)
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arc = arc_summary.ArcSummary(middle, block, 0)
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arc.resolved = True
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arc.count = 1
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block.entry_arcs.append(arc)
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middle.exit_arcs.append(arc)
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# Create resolved arcs entering the middle block
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for ident in range(n, 2 * n - 1):
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block = block_summary.BlockSummary(ident, 0)
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arc = arc_summary.ArcSummary(block, middle, 0)
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arc.resolved = True
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arc.count = 1
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block.exit_arcs.append(arc)
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middle.entry_arcs.append(arc)
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# Create one unresolved arc entering the middle
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block = block_summary.BlockSummary(2 * n - 1, 0)
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arc = arc_summary.ArcSummary(block, middle, 0)
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middle.entry_arcs.append(arc)
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block.exit_arcs.append(arc)
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self.assertTrue(arc.Resolve())
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self.assertTrue(arc.resolved)
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self.assertEqual(arc.count, 1)
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if __name__ == "__main__":
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unittest.main()
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