ClangCodeModel: Adapt clangd tooltip test for include directives

This feature was recently added upstream
(https://reviews.llvm.org/D107137).

Change-Id: I022855cd5d69230b755cdd657c5a7df2db5508ce
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/clangcodemodel/clangdclient.cpp

@@ -1370,12 +1370,13 @@ void ClangdClient::findLocalUsages(TextEditor::TextDocument *document, const QTe
 void ClangdClient::gatherHelpItemForTooltip(const HoverRequest::Response &hoverResponse,
                                             const DocumentUri &uri)
 {
-    // Macros aren't locatable via the AST, so parse the formatted string.
     if (const Utils::optional<Hover> result = hoverResponse.result()) {
         const HoverContent content = result->content();
         const MarkupContent * const markup = Utils::get_if<MarkupContent>(&content);
         if (markup) {
             const QString markupString = markup->content();
+
+            // Macros aren't locatable via the AST, so parse the formatted string.
             static const QString magicMacroPrefix = "### macro `";
             if (markupString.startsWith(magicMacroPrefix)) {
                 const int nameStart = magicMacroPrefix.length();
@@ -1387,6 +1388,19 @@ void ClangdClient::gatherHelpItemForTooltip(const HoverRequest::Response &hoverR
                     return;
                 }
             }
+
+            // Is it the file path for an include directive?
+            QString cleanString = markupString;
+            cleanString.remove('`');
+            const QStringList lines = cleanString.trimmed().split('\n');
+            if (!lines.isEmpty()) {
+                const auto filePath = Utils::FilePath::fromUserInput(lines.last().simplified());
+                if (filePath.exists()) {
+                    d->setHelpItemForTooltip(hoverResponse.id(), filePath.fileName(),
+                                             HelpItem::Brief);
+                    return;
+                }
+            }
         }
     }
 

src/plugins/clangcodemodel/test/clangdtests.cpp

@@ -604,8 +604,10 @@ void ClangdTestTooltips::test()
     QCOMPARE(editor->document(), doc);
     QVERIFY(editor->editorWidget());
 
-    if (QLatin1String(QTest::currentDataTag()) == QLatin1String("IncludeDirective"))
+    if (client()->versionNumber() < QVersionNumber(14)
+            && QLatin1String(QTest::currentDataTag()) == QLatin1String("IncludeDirective")) {
         QSKIP("FIXME: clangd sends empty or no hover data for includes");
+    }
 
     QTimer timer;
     timer.setSingleShot(true);
@@ -631,7 +633,6 @@ void ClangdTestTooltips::test()
     QEXPECT_FAIL("TypeName_ResolveTemplateTypeAlias", "typedef already resolved in AST", Abort);
     QCOMPARE(int(helpItem.category()), expectedCategory);
     QEXPECT_FAIL("TemplateClassQualified", "Additional look-up needed?", Abort);
-    QEXPECT_FAIL("AutoTypeTemplate", "Additional look-up needed?", Abort);
     QCOMPARE(helpItem.helpIds(), expectedIds);
     QCOMPARE(helpItem.docMark(), expectedMark);
 }

src/plugins/clangcodemodel/test/data/clangtestdata.qrc

@@ -43,5 +43,6 @@
         <file>tooltips/tooltips.pro</file>
         <file>highlighting/highlighting.cpp</file>
         <file>highlighting/highlighting.pro</file>
+        <file>tooltips/subdir/tooltipinfo.h</file>
     </qresource>
 </RCC>

src/plugins/clangcodemodel/test/data/tooltips/subdir/tooltipinfo.h

@@ -0,0 +1,3 @@
+#define MACRO_FROM_HEADER(x) x + \
+    x + \
+    x

src/plugins/clangcodemodel/test/data/tooltips/tooltips.pro

@@ -1,3 +1,4 @@
 TEMPLATE = app
 CONFIG -= qt
 SOURCES = tooltips.cpp
+INCLUDEPATH += subdir