public function testCleanupSemanticLossless() { // Slide diffs to match logical boundaries. // Null case. $this->d->setChanges(array()); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(), $this->d->getChanges()); // Blank lines. $this->d->setChanges(array(array(Diff::EQUAL, "AAA\r\n\r\nBBB"), array(Diff::INSERT, "\r\nDDD\r\n\r\nBBB"), array(Diff::EQUAL, "\r\nEEE"))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "AAA\r\n\r\n"), array(Diff::INSERT, "BBB\r\nDDD\r\n\r\n"), array(Diff::EQUAL, "BBB\r\nEEE")), $this->d->getChanges()); // Line boundaries. $this->d->setChanges(array(array(Diff::EQUAL, "AAA\r\nBBB"), array(Diff::INSERT, " DDD\r\nBBB"), array(Diff::EQUAL, " EEE"))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "AAA\r\n"), array(Diff::INSERT, "BBB DDD\r\n"), array(Diff::EQUAL, "BBB EEE")), $this->d->getChanges()); // Word boundaries. $this->d->setChanges(array(array(Diff::EQUAL, "The c"), array(Diff::INSERT, "ow and the c"), array(Diff::EQUAL, "at."))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "The "), array(Diff::INSERT, "cow and the "), array(Diff::EQUAL, "cat.")), $this->d->getChanges()); // Alphanumeric boundaries. $this->d->setChanges(array(array(Diff::EQUAL, "The-c"), array(Diff::INSERT, "ow-and-the-c"), array(Diff::EQUAL, "at."))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "The-"), array(Diff::INSERT, "cow-and-the-"), array(Diff::EQUAL, "cat.")), $this->d->getChanges()); // Hitting the start. $this->d->setChanges(array(array(Diff::EQUAL, "a"), array(Diff::DELETE, "a"), array(Diff::EQUAL, "ax"))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::DELETE, "a"), array(Diff::EQUAL, "aax")), $this->d->getChanges()); // Hitting the end. $this->d->setChanges(array(array(Diff::EQUAL, "xa"), array(Diff::DELETE, "a"), array(Diff::EQUAL, "a"))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "xaa"), array(Diff::DELETE, "a")), $this->d->getChanges()); // Sentence boundaries. $this->d->setChanges(array(array(Diff::EQUAL, "The xxx. The "), array(Diff::INSERT, "zzz. The "), array(Diff::EQUAL, "yyy."))); $this->d->cleanupSemanticLossless(); $this->assertEquals(array(array(Diff::EQUAL, "The xxx."), array(Diff::INSERT, " The zzz."), array(Diff::EQUAL, " The yyy.")), $this->d->getChanges()); }