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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.task.util.editor;
import org.junit.jupiter.api.Test;
import java.util.Optional;
import java.util.regex.Pattern;
import static org.junit.jupiter.api.Assertions.*;
public class StringEditorTest {
private final StringEditor editor = new StringEditor();
private final Cursor cursor = editor.cursor();
@Test
void testBasics() {
assertCursor(0, 0, "");
cursor.write("hello");
assertCursor(0, 5, "hello");
cursor.write("one\ntwo");
assertCursor(1, 3, "helloone\ntwo");
cursor.deleteAll();
assertCursor(0, 0, "");
cursor.moveForward();
assertCursor(0, 0, "");
cursor.writeLine("foo");
assertCursor(1, 0, "foo\n");
cursor.writeLines("one", "two");
assertCursor(3, 0, "foo\none\ntwo\n");
cursor.deleteBackward();
assertCursor(2, 3, "foo\none\ntwo");
cursor.deleteBackward(2);
assertCursor(2, 1, "foo\none\nt");
Mark mark = cursor.createMark();
cursor.moveToStartOfPreviousLine().moveBackward(2);
assertCursor(0, 2, "foo\none\nt");
assertEquals("o\none\nt", cursor.getTextTo(mark));
cursor.deleteTo(mark);
assertCursor(0, 2, "fo");
cursor.deleteBackward(2);
assertCursor(0, 0, "");
cursor.writeLines("one", "two", "three").moveToStartOfBuffer();
assertCursor(0, 0, "one\ntwo\nthree\n");
Pattern pattern = Pattern.compile("t(.)");
Optional<Match> match = cursor.moveForwardToEndOfMatch(pattern);
assertCursor(1, 2, "one\ntwo\nthree\n");
assertTrue(match.isPresent());
assertEquals("tw", match.get().match());
assertEquals("", match.get().prefix());
assertEquals("o", match.get().suffix());
assertEquals(new Position(1, 0), match.get().startOfMatch());
assertEquals(new Position(1, 2), match.get().endOfMatch());
assertEquals(1, match.get().groupCount());
assertEquals("w", match.get().group(1));
match = cursor.moveForwardToEndOfMatch(pattern);
assertCursor(2, 2, "one\ntwo\nthree\n");
assertTrue(match.isPresent());
assertEquals("th", match.get().match());
assertEquals(1, match.get().groupCount());
assertEquals("h", match.get().group(1));
match = cursor.moveForwardToEndOfMatch(pattern);
assertCursor(2, 2, "one\ntwo\nthree\n");
assertFalse(match.isPresent());
assertTrue(cursor.skipBackward("h"));
assertCursor(2, 1, "one\ntwo\nthree\n");
assertFalse(cursor.skipBackward("x"));
assertTrue(cursor.skipForward("hre"));
assertCursor(2, 4, "one\ntwo\nthree\n");
assertFalse(cursor.skipForward("x"));
try {
cursor.moveTo(mark);
fail();
} catch (IllegalArgumentException e) {
// expected
}
mark = cursor.createMark();
cursor.moveToStartOfBuffer();
assertEquals(new Position(0, 0), cursor.getPosition());
cursor.moveTo(mark);
assertEquals(new Position(2, 4), cursor.getPosition());
cursor.moveTo(1, 2);
assertCursor(1, 2, "one\ntwo\nthree\n");
cursor.deleteSuffix();
assertCursor(1, 2, "one\ntw\nthree\n");
cursor.deletePrefix();
assertCursor(1, 0, "one\n\nthree\n");
cursor.deleteLine();
assertCursor(1, 0, "one\nthree\n");
cursor.deleteLine();
assertCursor(1, 0, "one\n");
cursor.deleteLine();
assertCursor(1, 0, "one\n");
cursor.moveToStartOfBuffer().moveForward().writeNewlineAfter();
assertCursor(0, 1, "o\nne\n");
cursor.deleteAll().writeLines("one", "two", "three", "four");
cursor.moveToStartOfBuffer().moveToStartOfNextLine();
assertCursor(1, 0, "one\ntwo\nthree\nfour\n");
Pattern pattern2 = Pattern.compile("(o)(.)?");
int count = cursor.replaceMatches(pattern2, m -> {
String prefix = m.group(2) == null ? "" : m.group(2);
return prefix + m.match() + m.group(1);
});
assertCursor(3, 5, "one\ntwoo\nthree\nfuouor\n");
assertEquals(2, count);
cursor.moveToStartOfBuffer().moveToEndOfLine();
Pattern pattern3 = Pattern.compile("o");
count = cursor.replaceMatches(pattern3, m -> "a");
assertEquals(4, count);
assertCursor(3, 5, "one\ntwaa\nthree\nfuauar\n");
}
private void assertCursor(int lineIndex, int columnIndex, String text) {
assertEquals(text, cursor.getBufferText());
assertEquals(new Position(lineIndex, columnIndex), cursor.getPosition());
}
}
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