diff --git a/source/styles/tests/test_number_format.hpp b/source/styles/tests/test_number_format.hpp
index ec0b127d..df365327 100644
--- a/source/styles/tests/test_number_format.hpp
+++ b/source/styles/tests/test_number_format.hpp
@@ -839,4 +839,10 @@ public:
     {
         format_and_test(xlnt::number_format::date_dmminus(), {{"13-5", "###########", "0-1", "text"}});
     }
+
+    // m-yy
+    void test_builtin_format_date_myminus()
+    {
+        format_and_test(xlnt::number_format::date_myminus(), {{"5-16", "###########", "1-00", "text"}});
+    }
 };
diff --git a/source/utils/tests/test_zip_file.hpp b/source/utils/tests/test_zip_file.hpp
index 9e5c2acd..6a4ad4ab 100644
--- a/source/utils/tests/test_zip_file.hpp
+++ b/source/utils/tests/test_zip_file.hpp
@@ -14,7 +14,25 @@ public:
         existing_file = path_helper::get_data_directory("/genuine/empty.xlsx");
         expected_content_types_string = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\r\n<Types xmlns=\"http://schemas.openxmlformats.org/package/2006/content-types\"><Default Extension=\"xml\" ContentType=\"application/xml\"/><Default Extension=\"rels\" ContentType=\"application/vnd.openxmlformats-package.relationships+xml\"/><Override PartName=\"/xl/workbook.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml\"/><Override PartName=\"/xl/worksheets/sheet1.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml\"/><Override PartName=\"/xl/worksheets/sheet2.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml\"/><Override PartName=\"/xl/worksheets/sheet3.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml\"/><Override PartName=\"/xl/worksheets/sheet4.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml\"/><Override PartName=\"/xl/theme/theme1.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.theme+xml\"/><Override PartName=\"/xl/styles.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml\"/><Override PartName=\"/xl/sharedStrings.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml\"/><Override PartName=\"/xl/calcChain.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.spreadsheetml.calcChain+xml\"/><Override PartName=\"/docProps/core.xml\" ContentType=\"application/vnd.openxmlformats-package.core-properties+xml\"/><Override PartName=\"/docProps/app.xml\" ContentType=\"application/vnd.openxmlformats-officedocument.extended-properties+xml\"/></Types>";
         expected_atxt_string = "<?xml version=\"1.0\" ?>\n<sst xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\" count=\"3\" uniqueCount=\"2\"><si><t>This is cell A1 in Sheet 1</t></si><si><t>This is cell G5</t></si></sst>";
-        expected_printdir_string = "  Length      Date    Time    Name\n---------  ---------- -----   ----\n     1704  01/01/1980 00:00   [Content_Types].xml\n      588  01/01/1980 00:00   _rels/.rels\n     1254  01/01/1980 00:00   xl/_rels/workbook.xml.rels\n      898  01/01/1980 00:00   xl/workbook.xml\n     1231  01/01/1980 00:00   xl/worksheets/sheet4.xml\n     4427  01/01/1980 00:00   xl/worksheets/sheet2.xml\n     1032  01/01/1980 00:00   xl/worksheets/sheet3.xml\n     1026  01/01/1980 00:00   xl/worksheets/sheet1.xml\n     6995  01/01/1980 00:00   xl/theme/theme1.xml\n      233  01/01/1980 00:00   xl/sharedStrings.xml\n     1724  01/01/1980 00:00   xl/styles.xml\n      169  01/01/1980 00:00   xl/calcChain.xml\n      917  01/01/1980 00:00   docProps/app.xml\n      609  01/01/1980 00:00   docProps/core.xml\n---------                     -------\n    22807                     14 files\n";
+        expected_printdir_string =
+            "  Length      Date    Time    Name\n"
+            "---------  ---------- -----   ----\n"
+            "     1704  01/01/1980 00:00   [Content_Types].xml\n"
+            "      588  01/01/1980 00:00   _rels/.rels\n"
+            "      917  01/01/1980 00:00   docProps/app.xml\n"
+            "      609  01/01/1980 00:00   docProps/core.xml\n"
+            "     1254  01/01/1980 00:00   xl/_rels/workbook.xml.rels\n"
+            "      169  01/01/1980 00:00   xl/calcChain.xml\n"
+            "      233  01/01/1980 00:00   xl/sharedStrings.xml\n"
+            "     1724  01/01/1980 00:00   xl/styles.xml\n"
+            "     6995  01/01/1980 00:00   xl/theme/theme1.xml\n"
+            "      898  01/01/1980 00:00   xl/workbook.xml\n"
+            "     1068  07/21/2016 20:27   xl/worksheets/sheet1.xml\n"
+            "     4427  01/01/1980 00:00   xl/worksheets/sheet2.xml\n"
+            "     1032  01/01/1980 00:00   xl/worksheets/sheet3.xml\n"
+            "     1231  01/01/1980 00:00   xl/worksheets/sheet4.xml\n"
+            "---------                     -------\n"
+            "    22849                     14 files\n";
     }
 
     void remove_temp_file()
@@ -142,13 +160,13 @@ public:
     void test_infolist()
     {
         xlnt::zip_file f(existing_file);
-        TS_ASSERT(f.infolist().size() == 14);
+        TS_ASSERT_EQUALS(f.infolist().size(), 14);
     }
 
     void test_namelist()
     {
         xlnt::zip_file f(existing_file);
-        TS_ASSERT(f.namelist().size() == 14);
+        TS_ASSERT_EQUALS(f.namelist().size(), 14);
     }
 
     void test_open_by_name()
@@ -205,7 +223,7 @@ public:
         std::stringstream ss;
         f.printdir(ss);
         auto printed = ss.str();
-        TS_ASSERT(printed == expected_printdir_string);
+        TS_ASSERT_EQUALS(printed, expected_printdir_string);
     }
 
     void test_read()
diff --git a/source/workbook/tests/test_read.hpp b/source/workbook/tests/test_read.hpp
index d214358a..463b7afa 100644
--- a/source/workbook/tests/test_read.hpp
+++ b/source/workbook/tests/test_read.hpp
@@ -554,4 +554,11 @@ public:
 
         TS_ASSERT_THROWS(xlnt::shared_strings_serializer::read_shared_strings(xml_bad, strings), std::runtime_error);
     }
+
+    void test_read_inlinestr()
+    {
+        xlnt::workbook wb;
+        wb.load(path_helper::get_data_directory("/genuine/empty.xlsx"));
+        TS_ASSERT_EQUALS(wb.get_sheet_by_index(0).get_cell("A1").get_value<std::string>(), "This is cell A1 in Sheet 1");
+    }
 };
diff --git a/tests/data/genuine/empty.xlsx b/tests/data/genuine/empty.xlsx
index cf6d056b..1b9e826b 100644
Binary files a/tests/data/genuine/empty.xlsx and b/tests/data/genuine/empty.xlsx differ