fix INT128_MIN write (#1152)

* fix INT128_MIN write

* add write INT128_MIN test

* use Base.uabs

Co-authored-by: Nathan Zimmerberg <[email protected]>

* add BigInt test

---------

Co-authored-by: Nathan Zimmerberg <[email protected]>

Author: belous-dp

src/write.jl

@@ -435,7 +435,7 @@ end
 
 function writecell(buf, pos, len, io, x::Integer, opts)
     if x < 0
-        x *= -1
+        x = Base.uabs(x)
         @check 1
         @inbounds buf[pos] = UInt8('-')
         pos += 1

test/write.jl

@@ -195,6 +195,14 @@ Base.string(x::AF) = string(x.f)
             [StructType(Date("2021-12-01"), "string 1", 123.45), StructType(Date("2021-12-02"), "string 2", 456.78)],
             (header=["Date Column", "String Column", "Number Column"],),
             "Date Column,String Column,Number Column\n2021-12-01,string 1,123.45\n2021-12-02,string 2,456.78\n"
+        ),
+        # 1151
+        (
+            [(a=Int128(-170141183460469231731687303715884105728),
+              b=big(-170141183460469231731687303715884105728),
+              c=big(-170141183460469231731687303715884105729),)],
+            NamedTuple(),
+            "a,b,c\n-170141183460469231731687303715884105728,-170141183460469231731687303715884105728,-170141183460469231731687303715884105729\n"
         )
     ]