add unit tests for toCompletionParams

org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/edit/LSPEclipseUtilsTest.java

@@ -49,6 +49,7 @@
 import org.eclipse.lsp4e.test.utils.NoErrorLoggedRule;
 import org.eclipse.lsp4e.test.utils.TestUtils;
 import org.eclipse.lsp4e.ui.UI;
+import org.eclipse.lsp4j.CompletionTriggerKind;
 import org.eclipse.lsp4j.CreateFile;
 import org.eclipse.lsp4j.Location;
 import org.eclipse.lsp4j.Position;
@@ -464,6 +465,56 @@ public void testGetOpenEditorExternalFile() throws Exception {
  Assert.assertNotEquals(Collections.emptySet(), LSPEclipseUtils.findOpenEditorsFor(file.toURI()));
  }
 
+ @Test
+ public void testToCompletionParams_EmptyDocument() throws Exception {
+ IProject p = TestUtils.createProject(getClass().getSimpleName() + System.currentTimeMillis());
+ // Given an empty file/document
+ var file = TestUtils.createFile(p, "dummy"+new Random().nextInt(), "");
+ var triggerChars = new char[] {':', '>'};
+ // When toCompletionParams get called with offset == 0 and document.getLength() == 0:
+ var param = LSPEclipseUtils.toCompletionParams(file.getLocationURI(), 0, LSPEclipseUtils.getDocument(file), triggerChars);
+ // Then no context has been added to param:
+ Assert.assertNull(param.getContext());
+ }
+
+ @Test
+ public void testToCompletionParams_ZeroOffset() throws Exception {
+ IProject p = TestUtils.createProject(getClass().getSimpleName() + System.currentTimeMillis());
+ // Given a non empty file/document containing a non trigger character at position 3:
+ var file = TestUtils.createFile(p, "dummy"+new Random().nextInt(), "std");
+ var triggerChars = new char[] {':', '>'};
+ // When toCompletionParams get called with offset == 0 and document.getLength() > 0:
+ var param = LSPEclipseUtils.toCompletionParams(file.getLocationURI(), 0, LSPEclipseUtils.getDocument(file), triggerChars);
+ // Then the trigger kind is Invoked:
+ Assert.assertEquals(param.getContext().getTriggerKind(), CompletionTriggerKind.Invoked);
+ }
+
+ @Test
+ public void testToCompletionParams_MatchingTriggerCharacter() throws Exception {
+ IProject p = TestUtils.createProject(getClass().getSimpleName() + System.currentTimeMillis());
+ // Given a non empty file/document containing a trigger character at position 4:
+ var file = TestUtils.createFile(p, "dummy"+new Random().nextInt(), "std:");
+ var triggerChars = new char[] {':', '>'};
+ // When toCompletionParams get called with offset > 0 and document.getLength() > 0:
+ var param = LSPEclipseUtils.toCompletionParams(file.getLocationURI(), 4, LSPEclipseUtils.getDocument(file), triggerChars);
+ // Then the context has been added with a colon as trigger character:
+ Assert.assertEquals(param.getContext().getTriggerCharacter(), ":");
+ // And the trigger kind is TriggerCharacter:
+ Assert.assertEquals(param.getContext().getTriggerKind(), CompletionTriggerKind.TriggerCharacter);
+ }
+
+ @Test
+ public void testToCompletionParams_NonMatchingTriggerCharacter() throws Exception {
+ IProject p = TestUtils.createProject(getClass().getSimpleName() + System.currentTimeMillis());
+ // Given a non empty file/document containing a non trigger character at position 3:
+ var file = TestUtils.createFile(p, "dummy"+new Random().nextInt(), "std");
+ var triggerChars = new char[] {':', '>'};
+ // When toCompletionParams get called with offset > 0 and document.getLength() > 0:
+ var param = LSPEclipseUtils.toCompletionParams(file.getLocationURI(), 3, LSPEclipseUtils.getDocument(file), triggerChars);
+ // Then the trigger kind is Invoked:
+ Assert.assertEquals(param.getContext().getTriggerKind(), CompletionTriggerKind.Invoked);
+ }
+
  @Test
  public void parseRange_shouldReturnRange_UriWithStartLineNo() {
  Range actual = LSPEclipseUtils.parseRange("file:///a/b#L35");