Change default behavior to truncate Checks text from start when maxSize present (#270)

* change default behavior to truncate from start

* retrigger ci

* Update src/test/java/io/jenkins/plugins/checks/api/ChecksOutputTest.java

---------

Co-authored-by: Tim Jacomb <[email protected]>

Author: sarahdeitke

src/main/java/io/jenkins/plugins/checks/api/ChecksOutput.java

@@ -76,7 +76,13 @@ public Optional<String> getText() {
      * @return Text, truncated to maxSize with truncation message if appropriate.
      */
     public Optional<String> getText(final int maxSize) {
-        return Optional.ofNullable(text).map(s -> s.build(maxSize));
+        return Optional.ofNullable(text)
+                .map(s -> new TruncatedString.Builder()
+                        .setChunkOnNewlines()
+                        .setTruncateStart()
+                        .addText(s.toString())
+                        .build()
+                        .buildByChars(maxSize));
     }
 
     public List<ChecksAnnotation> getChecksAnnotations() {

src/test/java/io/jenkins/plugins/checks/api/ChecksOutputTest.java

@@ -97,6 +97,35 @@ void shouldCopyConstructCorrectly() {
                 .containsExactlyInAnyOrderElementsOf(images);
     }
 
+    @Test
+    void shouldTruncateTextFromStart() {
+        String longText = "This is the beginning.\n" + "Middle part.\n".repeat(10) + "This is the end.\n";
+        ChecksOutput checksOutput = new ChecksOutputBuilder()
+                .withText(longText)
+                .build();
+
+        String truncated = checksOutput.getText(75).orElse("");
+        
+        assertThat(truncated)
+                .startsWith("Output truncated.")
+                .endsWith("This is the end.\n");
+        assertThat(truncated.length()).isLessThanOrEqualTo(75);
+    }
+
+    @Test
+    void shouldNotTruncateShortText() {
+        String shortText = "This is a short text that should not be truncated.";
+        ChecksOutput checksOutput = new ChecksOutputBuilder()
+                .withText(shortText)
+                .build();
+
+        String result = checksOutput.getText(100).orElse("");
+        
+        assertThat(result)
+                .isEqualTo(shortText)
+                .doesNotContain("Output truncated.");
+    }
+
     private List<ChecksAnnotation> createAnnotations() {
         final ChecksAnnotationBuilder builder = new ChecksAnnotationBuilder()
                 .withPath("src/main/java/1.java")