Following #4669: add test for Excel import date/time conversion

form-runner/jvm/src/test/scala/org/orbeon/oxf/fr/FormRunnerImportTest.scala

@@ -0,0 +1,37 @@
+/**
+ * Copyright (C) 2020 Orbeon, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU Lesser General Public License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU Lesser General Public License for more details.
+ *
+ * The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
+ */
+package org.orbeon.oxf.fr
+
+import org.scalatest.funspec.AnyFunSpec
+
+
+class FormRunnerImportTest extends AnyFunSpec {
+
+  describe("Excel storage format") {
+
+    val Expected = List(
+      ("1",         "date",     "1900-01-01"),
+      ("44089",     "date",     "2020-09-15"),
+      ("44089.625", "datetime", "2020-09-15T15:00:00"),
+      ("0",         "time",     "00:00:00"),
+      ("0.5",       "time",     "12:00:00"),
+      ("0.625",     "time",     "15:00:00"),
+    )
+
+    for ((storage, formatTypeString, iso) <- Expected)
+      it(s"must convert from `$storage` to `$iso`") {
+        assert(iso == FormRunnerImport.convertDateTime(storage, formatTypeString, use1904windowing = false))
+      }
+  }
+}