CmdBridge: Fix createTempFile

go' os.CreateTemp() will fail if no placeholder is present, and a file with the same path
exists. So we force adding a placeholder at the end if the user didn't already add one.

Change-Id: I4b9833487f4a963aa3e85ef48df5ad8e4382db40
Reviewed-by: hjk <hjk@qt.io>

src/libs/gocmdbridge/client/bridgedfileaccess.cpp

@@ -592,12 +592,18 @@ expected_str<FilePath> FileAccess::createTempFile(const FilePath &filePath)
                 if (path[i] != 'X')
                     break;
             path = path.left(i + 1) + "*";
+        } else {
+            path += ".*";
         }
 
         Utils::expected_str<QFuture<Utils::FilePath>> f = m_client->createTempFile(path);
         QTC_ASSERT_EXPECTED(f, return {});
         f->waitForFinished();
-        return f->result();
+
+        expected_str<FilePath> result = f->result();
+        if (!result)
+            return result;
+        return filePath.withNewPath(result->path());
     } catch (const std::exception &e) {
         return make_unexpected(
             Tr::tr("Error creating temporary file: %1").arg(QString::fromLocal8Bit(e.what())));

tests/manual/cmdbridge/tst_cmdbridge.cpp

@@ -131,6 +131,29 @@ private slots:
         QVERIFY(!fileAccess.exists(*tempFile));
     }
 
+    void testTempFileWithoutPlaceholder()
+    {
+        CmdBridge::FileAccess fileAccess;
+        auto res = fileAccess.deployAndInit(
+            FilePath::fromUserInput(libExecPath), FilePath::fromUserInput("/"));
+
+        QVERIFY(res);
+
+        const FilePath pattern = FilePath::fromUserInput(QDir::tempPath()) / "test.txt";
+
+        // We have to create a file with the pattern name to test the automatic placeholder
+        // adding. go' os.CreateTemp() will fail if no placeholder is present, and the file exists.
+        pattern.writeFileContents("Test");
+
+        auto tempFile = fileAccess.createTempFile(pattern);
+
+        QVERIFY(tempFile);
+        QVERIFY(fileAccess.exists(*tempFile));
+        QVERIFY(fileAccess.removeFile(*tempFile));
+        QVERIFY(!fileAccess.exists(*tempFile));
+        QVERIFY(tempFile->fileName().startsWith("test.txt."));
+    }
+
     void testFileContents()
     {
         CmdBridge::FileAccess fileAccess;