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[emontx] Test lines of exactly MAX_LINE_LENGTH bytes (#20517)

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Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Frédéric Metrich
2026-10-11 12:50:42 +00:00
committed by GitHub
co-authored by Claude Opus 5.5
parent 7f7ae4c8fc
commit c5cbc4a4e0
1 changed files with 19 additions and 0 deletions
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tests/components/emontx/emontx_test.cpp
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@@ -41,6 +41,25 @@ TEST_F(EmonTxTest, JsonLineParsed) {
EXPECT_EQ(this->json_count_, 1);
}
// The CR check must come before the overflow check, or a full line ending in CRLF would overflow.
TEST_F(EmonTxTest, FullLengthLineWithCrLfDelivered) {
this->uart_.push_rx(MAX_LINE_LENGTH, 'a');
this->uart_.push_rx("\r\n");
this->sut_.loop();
ASSERT_EQ(this->lines_.size(), 1u);
EXPECT_EQ(this->lines_[0], std::string(MAX_LINE_LENGTH, 'a'));
}
TEST_F(EmonTxTest, FullLengthLineWithLfDelivered) {
this->uart_.push_rx(MAX_LINE_LENGTH, 'a');
this->uart_.push_rx("\n");
this->sut_.loop();
ASSERT_EQ(this->lines_.size(), 1u);
EXPECT_EQ(this->lines_[0], std::string(MAX_LINE_LENGTH, 'a'));
}
TEST_F(EmonTxTest, OverflowedLineDiscardedUntilLineFeed) {
// One byte more than the buffer holds, then more of the same line.
this->uart_.push_rx(MAX_LINE_LENGTH + 1, 'a');