R Under development (unstable) (2023-10-08 r85282 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> library(grid)
> library(grImport2)
> library(gridSVG)

Attaching package: 'gridSVG'

The following objects are masked from 'package:grid':

    linearGradient, pattern, radialGradient

The following object is masked from 'package:grDevices':

    dev.off

> 
> pic <- readPicture("test-path-simple-input.svg")
> 
> gridsvg("test-path-simple-output.svg", width = 6, height = 6, annotate = FALSE)
> grid.picture(pic, expansion = 0)
> dev.off()
> 
> pic <- readPicture("test-path-complex-input.svg")
> 
> gridsvg("test-path-complex-output.svg", width = 6, height = 6, annotate = FALSE)
> grid.picture(pic, expansion = 0)
> dev.off()
> 
> ## Encoding in SVG file (on line 1) differs by platform
> model <- readLines("test-path-simple-output.svg.save")[-1]
Warning message:
In readLines("test-path-simple-output.svg.save") :
  incomplete final line found on 'test-path-simple-output.svg.save'
> test <- readLines("test-path-simple-output.svg")[-1]
Warning message:
In readLines("test-path-simple-output.svg") :
  incomplete final line found on 'test-path-simple-output.svg'
> same <- model == test
> if (! all(same)) {
+     stop(paste0("path-simple output not equal to expected output",
+                 "------------------",
+                 model[!same],
+                 "------------------",
+                 test[!same],
+                 collapse="\n"))
+ }
> 
> model <- readLines("test-path-complex-output.svg.save")[-1]
Warning message:
In readLines("test-path-complex-output.svg.save") :
  incomplete final line found on 'test-path-complex-output.svg.save'
> test <- readLines("test-path-complex-output.svg")[-1]
Warning message:
In readLines("test-path-complex-output.svg") :
  incomplete final line found on 'test-path-complex-output.svg'
> same <- model == test
> if (! all(same)) {
+     ## Protect against tiny rounding differences in locations
+     x <- suppressWarnings(lapply(strsplit(model[!same], " "), as.numeric))
+     y <- suppressWarnings(lapply(strsplit(test[!same], " "), as.numeric))
+     rx <- unlist(lapply(x, round, 1))
+     ry <- unlist(lapply(y, round, 1))
+     if (!all.equal(rx, ry)) {
+         stop(paste0("path-complex output not equal to expected output",
+                     "------------------",
+                     model[!same],
+                     "------------------",
+                     test[!same],
+                     collapse="\n"))
+     }
+ }
> 
> 
> 
> proc.time()
   user  system elapsed 
  10.00    0.17   10.15