diff --git a/NEWS.md b/NEWS.md
index 96a38540e8..d33e8baef2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -224,6 +224,8 @@
 
 12. The test suite of 9k tests now runs with three R options on: `warnPartialMatchArgs`, `warnPartialMatchAttr`, and `warnPartialMatchDollar`. This ensures that we don't rely on partial argument matching in internal code, for robustness and efficiency, and so that users can turn these options on for their code in production, [#3664](https://github.com/Rdatatable/data.table/issues/3664). Thanks to Vijay Lulla for the suggestion, and Michael Chirico for fixing 48 internal calls to `attr()` which were missing `exact=TRUE`, for example. Thanks to R-core for adding these options to R 2.6.0 (Oct 2007).
 
+13. `test.data.table()` could fail if the `datatable.integer64` user option was set, [#3683](https://github.com/Rdatatable/data.table/issues/3683). Thanks @xiaguoxin for reporting.
+
 
 ### Changes in [v1.12.2](https://github.com/Rdatatable/data.table/milestone/14?closed=1)  (07 Apr 2019)
 
diff --git a/inst/tests/tests.Rraw b/inst/tests/tests.Rraw
index fd3010629c..bc14dba34b 100644
--- a/inst/tests/tests.Rraw
+++ b/inst/tests/tests.Rraw
@@ -102,6 +102,7 @@ oldOptions = options(
   datatable.alloccol = 1024L,
   datatable.print.class = FALSE,  # this is TRUE in cc.R and we like TRUE. But output= tests need to be updated (they assume FALSE currently)
   datatable.rbindlist.check = NULL,
+  datatable.integer64 = "integer64",
   warnPartialMatchArgs = TRUE,    # ensure we don't rely on partial argument matching in internal code, #3664
   warnPartialMatchAttr = TRUE,
   warnPartialMatchDollar = TRUE
@@ -2544,9 +2545,11 @@ if (test_bit64) {
   DT[116, b3:="12345678901234567890A"]  # A is needed otherwise read as double with loss of precision (TO DO: should detect and bump to STR)
   DT[117, r2:="3.14A"]
   fwrite(DT,f<-tempfile())
-  test(899.1, fread(f,verbose=TRUE), DT, output="Rereading 6 columns.*out-of-sample.*Column 4.*a2.*int32.*int64.*<<12345678901234>>.*Column 10.*r2.*float64.*string.*<<3.14A>>")
-  test(899.2, fread(f, colClasses=list(character=c("a4","b3","r2"),integer64="a2",double=c("a3","b2")), verbose=TRUE),
+  test(899.1, fread(f, verbose=TRUE), DT, output="Rereading 6 columns.*out-of-sample.*Column 4.*a2.*int32.*int64.*<<12345678901234>>.*Column 10.*r2.*float64.*string.*<<3.14A>>")
+  test(899.2, fread(f, colClasses=list(character=c("a4","b3","r2"), integer64="a2", double=c("a3","b2")), verbose=TRUE),
               DT, output="Rereading 0 columns due to out-of-sample type exceptions")
+  test(899.3, fread(f, integer64="character", select=c("a","b","c")), DT[, .(a, b=as.character(b), c)])
+  # leaving integer64='character' version of 899.1,899.2 until #2749 is fixed
   unlink(f)
 }
 
@@ -6300,12 +6303,15 @@ quote"\n2,should be ok\n'),
 quote','should be ok')))
 
 if (test_bit64) {
-    # quoted multiline (scrambled data thanks to #810)
-    test(1449, fread(testDir("quoted_multiline.csv"))[c(1,43:44),c(1,22:24),with=FALSE],
-           data.table(GPMLHTLN=as.integer64(c("3308386085360","3440245203140","1305220146734")),
-                      BLYBZ = c(0L,4L,6L),
-                      ZBJBLOAJAQI = c("LHCYS AYE ZLEMYA IFU HEI JG FEYE","",""),
-                      JKCRUUBAVQ = c("",".\\YAPCNXJ\\004570_850034_757\\VWBZSS_848482_600874_487_PEKT-6-KQTVIL-7_30\\IRVQT\\HUZWLBSJYHZ\\XFWPXQ-WSPJHC-00-0770000855383.KKZ","")))
+  # quoted multiline (scrambled data thanks to #810)
+  DT = data.table(
+    GPMLHTLN = as.integer64(c("3308386085360", "3440245203140", "1305220146734")),
+    BLYBZ = c(0L,4L,6L),
+    ZBJBLOAJAQI = c("LHCYS AYE ZLEMYA IFU HEI JG FEYE", "", ""),
+    JKCRUUBAVQ = c("", ".\\YAPCNXJ\\004570_850034_757\\VWBZSS_848482_600874_487_PEKT-6-KQTVIL-7_30\\IRVQT\\HUZWLBSJYHZ\\XFWPXQ-WSPJHC-00-0770000855383.KKZ", "")
+  )
+  test(1449.1, fread(testDir("quoted_multiline.csv"))[c(1L, 43:44), c(1L, 22:24)], DT)
+  test(1449.2, fread(testDir("quoted_multiline.csv"), integer64='character', select = 'GPMLHTLN')[c(1L, 43:44)][[1L]], DT[ , as.character(GPMLHTLN)])
 }
 
 # Fix for #927