Check length

Author: rossviljoen

src/UnixTimes.jl

@@ -66,9 +66,14 @@ UnixTime(x::Date, y::Time) =
 const DATEFORMAT = dateformat"yyyy-mm-ddTHH:MM:SS.sss"
 
 function UnixTime(s::AbstractString)
-    dt = DateTime(chop(s; tail=6), DATEFORMAT)
-    ns = Nanosecond(parse(Int, last(s, 6)))
-    UnixTime(dt) + ns
+    try
+        @assert length(s) == 29
+        dt = DateTime(chop(s; tail=6), DATEFORMAT)
+        ns = Nanosecond(parse(Int, last(s, 6)))
+        UnixTime(dt) + ns
+    catch
+        throw(ArgumentError("Invalid UnixTime string"))
+    end
 end
 
 Base.convert(::Type{UnixTime}, x::DateTime) = UnixTime(x)

test/runtests.jl

@@ -48,6 +48,9 @@ end
     x = UnixTime(2020, 1, 2, 3, 4, 5, 6, 7, 8)
     @test string(x) == "2020-01-02T03:04:05.006007008"
     @test UnixTime(string(x)) == x
+    @test_throws ArgumentError UnixTime("2025-01-28T15:49:36.5901397023")
+    @test_throws ArgumentError UnixTime("2025-01-28T15:49:36.59013970")
+    @test_throws ArgumentError UnixTime(repeat("a", 29))
 end
 
 @testset "arithmetic" begin