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Improve error messages in CompletionTest eclipse-platform#906
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Provide more meaningful error message in case any of the test cases in
CompletionTest fails. Particularly also explicitly validate whether the
proposal list widget has been disposed concurrently.

Contributes to
eclipse-platform#906
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@HeikoKlare @praveen-skp
HeikoKlare authored and praveen-skp committed Aug 8, 2023
1 parent 4db3eef commit f0c0b9b
Showing 1 changed file with 46 additions and 40 deletions.
86 changes: 46 additions & 40 deletions ...eclipse.ui.genericeditor.tests/src/org/eclipse/ui/genericeditor/tests/CompletionTest.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -13,18 +13,24 @@
*******************************************************************************/
package org.eclipse.ui.genericeditor.tests;

import static org.hamcrest.CoreMatchers.endsWith;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
import java.util.Set;
import java.util.function.BooleanSupplier;
import java.util.stream.Collectors;

import org.junit.After;
Expand Down Expand Up @@ -119,14 +125,20 @@ public void testCompletionUsingViewerSelection() throws Exception {
editor.selectAndReveal(0, 3);
this.completionShell= openConentAssist();
final Table completionProposalList = findCompletionSelectionControl(completionShell);
assertTrue(new DisplayHelper() {
waitForProposalRelatedCondition("Proposal list did not contain expected item: ABC", completionProposalList,
() -> Arrays.stream(completionProposalList.getItems()).map(TableItem::getText).anyMatch("ABC"::equals), 5_000);
}

private static void waitForProposalRelatedCondition(String errorMessage, Table completionProposalList, BooleanSupplier condition, int timeoutInMsec) {
assertTrue(errorMessage, new DisplayHelper() {
@Override
protected boolean condition() {
return Arrays.stream(completionProposalList.getItems()).map(TableItem::getText).anyMatch("ABC"::equals);
assertFalse("Completion proposal list was unexpectedly disposed", completionProposalList.isDisposed());
return condition.getAsBoolean();
}
}.waitForCondition(completionProposalList.getDisplay(), 200));
}.waitForCondition(completionProposalList.getDisplay(), timeoutInMsec));
}

@Test
public void testEnabledWhenCompletion() throws Exception {
// Confirm that when disabled, a completion shell is present
Expand Down Expand Up @@ -165,29 +177,27 @@ private Shell openConentAssist(boolean expectShell) {
*/
private void checkCompletionContent(final Table completionProposalList) {
// should be instantaneous, but happens to go asynchronous on CI so let's allow a wait
assertTrue(new DisplayHelper() {
@Override
protected boolean condition() {
return completionProposalList.getItemCount() == 2;
}
}.waitForCondition(completionProposalList.getDisplay(), 200));
waitForProposalRelatedCondition("Proposal list did not show two initial items", completionProposalList,
() -> completionProposalList.getItemCount() == 2, 200);
assertTrue("Missing computing info entry", isComputingInfoEntry(completionProposalList.getItem(0)));
TableItem completionProposalItem = completionProposalList.getItem(1);
final ICompletionProposal selectedProposal = (ICompletionProposal)completionProposalItem.getData();
assertTrue("Incorrect proposal content", BarContentAssistProcessor.PROPOSAL.endsWith(selectedProposal .getDisplayString()));
completionProposalList.setSelection(completionProposalItem);
assertTrue("Missing computing info entry in proposal list", isComputingInfoEntry(completionProposalList.getItem(0)));
final TableItem initialProposalItem = completionProposalList.getItem(1);
final String initialProposalString = ((ICompletionProposal)initialProposalItem.getData()).getDisplayString();
assertThat("Unexpected initial proposal item",
BarContentAssistProcessor.PROPOSAL, endsWith(initialProposalString));
completionProposalList.setSelection(initialProposalItem);
// asynchronous
new DisplayHelper() {
@Override
protected boolean condition() {
return !isComputingInfoEntry(completionProposalList.getItem(0)) && completionProposalList.getItemCount() == 2;
}
}.waitForCondition(completionProposalList.getDisplay(), LongRunningBarContentAssistProcessor.DELAY + 200);
completionProposalItem = completionProposalList.getItem(0);
assertTrue("Proposal content seems incorrect", BarContentAssistProcessor.PROPOSAL.endsWith(((ICompletionProposal)completionProposalItem.getData()).getDisplayString()));
TableItem otherProposalItem = completionProposalList.getItem(1);
assertTrue("Proposal content seems incorrect", LongRunningBarContentAssistProcessor.PROPOSAL.endsWith(((ICompletionProposal)otherProposalItem.getData()).getDisplayString()));
assertEquals("Addition of completion proposal should keep selection", selectedProposal, completionProposalList.getSelection()[0].getData());
waitForProposalRelatedCondition("Proposal list did not show two items after finishing computing", completionProposalList,
() -> !isComputingInfoEntry(completionProposalList.getItem(0)) && completionProposalList.getItemCount() == 2,
LongRunningBarContentAssistProcessor.DELAY + 200);
final TableItem firstCompletionProposalItem = completionProposalList.getItem(0);
final TableItem secondCompletionProposalItem = completionProposalList.getItem(1);
String firstCompletionProposalText = ((ICompletionProposal)firstCompletionProposalItem.getData()).getDisplayString();
String secondCOmpletionProposalText = ((ICompletionProposal)secondCompletionProposalItem.getData()).getDisplayString();
assertThat("Unexpected first proposal item", BarContentAssistProcessor.PROPOSAL, endsWith(firstCompletionProposalText));
assertThat("Unexpected second proposal item", LongRunningBarContentAssistProcessor.PROPOSAL, endsWith(secondCOmpletionProposalText));
String selectedProposalString = ((ICompletionProposal)completionProposalList.getSelection()[0].getData()).getDisplayString();
assertEquals("Addition of completion proposal should keep selection", initialProposalString, selectedProposalString);
}

private static boolean isComputingInfoEntry(TableItem item) {
Expand All @@ -211,13 +221,8 @@ public void testCompletionFreeze_bug521484() throws Exception {
this.completionShell=openConentAssist();
final Table completionProposalList = findCompletionSelectionControl(this.completionShell);
// should be instantaneous, but happens to go asynchronous on CI so let's allow a wait
new DisplayHelper() {
@Override
protected boolean condition() {
return completionProposalList.getItemCount() == 2;
}
}.waitForCondition(completionShell.getDisplay(), 200);
assertEquals(2, completionProposalList.getItemCount());
waitForProposalRelatedCondition("Proposal list did not show two items", completionProposalList,
() -> completionProposalList.getItemCount() == 2, 200);
assertTrue("Missing computing info entry", isComputingInfoEntry(completionProposalList.getItem(0)));
// Some processors are long running, moving cursor can cause freeze (bug 521484)
// asynchronous
Expand Down Expand Up @@ -251,16 +256,17 @@ private void emulatePressLeftArrowKey() {
}

public static Table findCompletionSelectionControl(Widget control) {
if (control instanceof Table) {
return (Table)control;
} else if (control instanceof Composite) {
for (Widget child : ((Composite)control).getChildren()) {
Table res = findCompletionSelectionControl(child);
if (res != null) {
return res;
}
Queue<Widget> widgetsToProcess = new LinkedList<>();
widgetsToProcess.add(control);
while (!widgetsToProcess.isEmpty()) {
Widget child = widgetsToProcess.poll();
if (child instanceof Table table) {
return table;
} else if (child instanceof Composite composite) {
widgetsToProcess.addAll(Arrays.asList(composite.getChildren()));
}
}
fail("No completion selection control found in widget: " + control);
return null;
}

Expand Down

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