@@ -4235,3 +4235,49 @@ error: showing how tabs are rendered
42354235 let renderer = renderer. decor_style ( DecorStyle :: Unicode ) ;
42364236 assert_data_eq ! ( renderer. render( input) , expected_unicode) ;
42374237}
4238+ 4239+ #[ test]
4240+ fn duplicate_annotations ( ) {
4241+ let source = r#"foobar
4242+
4243+ foobar 🚀
4244+ "# ;
4245+ let report = & [
4246+ Group :: with_title ( Level :: WARNING . primary_title ( "whatever" ) ) . element (
4247+ Snippet :: source ( source)
4248+ . path ( "whatever" )
4249+ . annotation ( AnnotationKind :: Primary . span ( 0 ..source. len ( ) ) . label ( "blah" ) )
4250+ . annotation ( AnnotationKind :: Primary . span ( 0 ..source. len ( ) ) . label ( "blah" ) ) ,
4251+ ) ,
4252+ ] ;
4253+ 4254+ let expected_ascii = str![ [ r#"
4255+ warning: whatever
4256+ --> whatever:1:1
4257+ |
4258+ 1 | / foobar
4259+ 2 | |
4260+ 3 | | foobar 🚀
4261+ | | ^
4262+ | |______________________|
4263+ | |______________________blah
4264+ | blah
4265+ "# ] ] ;
4266+ let renderer = Renderer :: plain ( ) ;
4267+ assert_data_eq ! ( renderer. render( report) , expected_ascii) ;
4268+ 4269+ let expected_unicode = str![ [ r#"
4270+ warning: whatever
4271+ ╭▸ whatever:1:1
4272+ │
4273+ 1 │ ┏ foobar
4274+ 2 │ ┃
4275+ 3 │ ┃ foobar 🚀
4276+ │ ┃ ╿
4277+ │ ┃━━━━━━━━━━━━━━━━━━━━━━│
4278+ │ ┗━━━━━━━━━━━━━━━━━━━━━━blah
4279+ ╰╴ blah
4280+ "# ] ] ;
4281+ let renderer = renderer. decor_style ( DecorStyle :: Unicode ) ;
4282+ assert_data_eq ! ( renderer. render( report) , expected_unicode) ;
4283+ }
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