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/*
* SonarQube
* Copyright (C) 2009-2024 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.scm.git;
import java.io.IOException;
import java.io.OutputStreamWriter;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
public class ChangedLinesComputerTest {
private final ChangedLinesComputer underTest = new ChangedLinesComputer();
@Test
public void do_not_count_deleted_line() throws IOException {
String example = """
diff --git a/file-b1.xoo b/file-b1.xoo
index 0000000..c2a9048
--- a/foo
+++ b/bar
@@ -1 +0,0 @@
-deleted line
""";
printDiff(example);
assertThat(underTest.changedLines()).isEmpty();
}
@Test
public void count_single_added_line() throws IOException {
String example = """
diff --git a/file-b1.xoo b/file-b1.xoo
index 0000000..c2a9048
--- a/foo
+++ b/bar
@@ -0,0 +1 @@
+added line
""";
printDiff(example);
assertThat(underTest.changedLines()).containsExactly(1);
}
@Test
public void count_multiple_added_lines() throws IOException {
String example = """
diff --git a/file-b1.xoo b/file-b1.xoo
index 0000000..c2a9048
--- a/foo
+++ b/bar
@@ -1 +1,3 @@
unchanged line
+added line 1
+added line 2
""";
printDiff(example);
assertThat(underTest.changedLines()).containsExactly(2, 3);
}
@Test
public void compute_from_multiple_hunks() throws IOException {
String example = """
diff --git a/lao b/lao
index 635ef2c..5af88a8 100644
--- a/lao
+++ b/lao
@@ -1,7 +1,6 @@
-The Way that can be told of is not the eternal Way;
-The name that can be named is not the eternal name.
The Nameless is the origin of Heaven and Earth;
-The Named is the mother of all things.
+The named is the mother of all things.
+
Therefore let there always be non-being,
so we may see their subtlety,
And let there always be being,
@@ -9,3 +8,6 @@ And let there always be being,
The two are the same,
But after they are produced,
they have different names.
+They both may be called deep and profound.
+Deeper and more profound,
+The door of all subtleties!
""";
printDiff(example);
assertThat(underTest.changedLines()).containsExactly(2, 3, 11, 12, 13);
}
@Test
public void compute_from_multiple_hunks_with_extra_header_lines() throws IOException {
String example = """
diff --git a/lao b/lao
new file mode 100644
whatever \
other \
surprise header lines git might throw at us...
index 635ef2c..5af88a8 100644
--- a/lao
+++ b/lao
@@ -1,7 +1,6 @@
-The Way that can be told of is not the eternal Way;
-The name that can be named is not the eternal name.
The Nameless is the origin of Heaven and Earth;
-The Named is the mother of all things.
+The named is the mother of all things.
+
Therefore let there always be non-being,
so we may see their subtlety,
And let there always be being,
@@ -9,3 +8,6 @@ And let there always be being,
The two are the same,
But after they are produced,
they have different names.
+They both may be called deep and profound.
+Deeper and more profound,
+The door of all subtleties!
""";
printDiff(example);
assertThat(underTest.changedLines()).containsExactly(2, 3, 11, 12, 13);
}
@Test
public void throw_exception_invalid_start_line_format() throws IOException {
String example = """
diff --git a/file-b1.xoo b/file-b1.xoo
index 0000000..c2a9048
--- a/foo
+++ b/bar
@@ -1 +x1,3 @@
unchanged line
+added line 1
+added line 2
""";
assertThatThrownBy(() -> printDiff(example))
.isInstanceOf(IllegalStateException.class);
}
private void printDiff(String unifiedDiff) throws IOException {
try (OutputStreamWriter writer = new OutputStreamWriter(underTest.receiver())) {
writer.write(unifiedDiff);
}
}
}
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