Add option to use high-visibility icons

The default icons used in the pkgname output formats (∅,✔,𐄂) can
be hard to spot when scrolling through test output.

This PR adds the ability to pick a higher-visiblity/contrast set of
icons (🔳,✅,❌) by adding a `-hivis` suffix to either of the 'pkgname'
style formats.

cmd/main.go

@@ -127,13 +127,15 @@ Flags:
 	flags.PrintDefaults()
 	fmt.Fprintf(out, `
 Formats:
-    dots                     print a character for each test
-    dots-v2                  experimental dots format, one package per line
-    pkgname                  print a line for each package
-    pkgname-and-test-fails   print a line for each package and failed test output
-    testname                 print a line for each test and package
-    standard-quiet           standard go test format
-    standard-verbose         standard go test -v format
+    dots                           print a character for each test
+    dots-v2                        experimental dots format, one package per line
+    pkgname                        print a line for each package
+    pkgname-hivis                  print a line for each package, use hi-visability icons
+    pkgname-and-test-fails         print a line for each package and failed test output
+    pkgname-and-test-fails-hivis   print a line for each package and failed test output, use hi-visability icons
+    testname                       print a line for each test and package
+    standard-quiet                 standard go test format
+    standard-verbose               standard go test -v format
 
 Commands:
     %[1]s tool slowest   find or skip the slowest tests

cmd/testdata/gotestsum-help-text

@@ -28,13 +28,15 @@ Flags:
       --watch                                       watch go files, and run tests when a file is modified
 
 Formats:
-    dots                     print a character for each test
-    dots-v2                  experimental dots format, one package per line
-    pkgname                  print a line for each package
-    pkgname-and-test-fails   print a line for each package and failed test output
-    testname                 print a line for each test and package
-    standard-quiet           standard go test format
-    standard-verbose         standard go test -v format
+    dots                           print a character for each test
+    dots-v2                        experimental dots format, one package per line
+    pkgname                        print a line for each package
+    pkgname-hivis                  print a line for each package, use hi-visability icons
+    pkgname-and-test-fails         print a line for each package and failed test output
+    pkgname-and-test-fails-hivis   print a line for each package and failed test output, use hi-visability icons
+    testname                       print a line for each test and package
+    standard-quiet                 standard go test format
+    standard-verbose               standard go test -v format
 
 Commands:
     gotestsum tool slowest   find or skip the slowest tests

testjson/format.go

@@ -8,6 +8,16 @@ import (
 	"github.com/fatih/color"
 )
 
+const (
+	hivisSuffix         = "-hivis"
+	defaultEmptyEmoji   = "∅"
+	defaultSuccessEmoji = "✓"
+	defaultFailEmoji    = "✖"
+	hivisEmptyEmpji     = "🔳"
+	hivisSuccessEmoji   = "✅"
+	hivisFailEmoji      = "❌"
+)
+
 func debugFormat(event TestEvent, _ *Execution) string {
 	return fmt.Sprintf("%s %s %s (%.3f) [%d] %s\n",
 		event.Package,
@@ -139,6 +149,17 @@ func pkgNameFormat(opts FormatOptions) func(event TestEvent, exec *Execution) st
 
 func shortFormatPackageEvent(opts FormatOptions, event TestEvent, exec *Execution) string {
 	pkg := exec.Package(event.Package)
+	var emptyEmoji, successEmoji, failEmoji string
+
+	if opts.UseHivisEmojis {
+		emptyEmoji = hivisEmptyEmpji
+		successEmoji = hivisSuccessEmoji
+		failEmoji = hivisFailEmoji
+	} else {
+		emptyEmoji = defaultEmptyEmoji
+		successEmoji = defaultSuccessEmoji
+		failEmoji = defaultFailEmoji
+	}
 
 	fmtEvent := func(action string) string {
 		return action + "  " + packageLine(event, exec)
@@ -149,17 +170,17 @@ func shortFormatPackageEvent(opts FormatOptions, event TestEvent, exec *Executio
 		if opts.HideEmptyPackages {
 			return ""
 		}
-		return fmtEvent(withColor("∅"))
+		return fmtEvent(withColor(emptyEmoji))
 	case ActionPass:
 		if pkg.Total == 0 {
 			if opts.HideEmptyPackages {
 				return ""
 			}
-			return fmtEvent(withColor("∅"))
+			return fmtEvent(withColor(emptyEmoji))
 		}
-		return fmtEvent(withColor("✓"))
+		return fmtEvent(withColor(successEmoji))
 	case ActionFail:
-		return fmtEvent(withColor("✖"))
+		return fmtEvent(withColor(failEmoji))
 	}
 	return ""
 }
@@ -223,10 +244,15 @@ type EventFormatter interface {
 
 type FormatOptions struct {
 	HideEmptyPackages bool
+	UseHivisEmojis    bool
 }
 
 // NewEventFormatter returns a formatter for printing events.
 func NewEventFormatter(out io.Writer, format string, formatOpts FormatOptions) EventFormatter {
+	if strings.HasSuffix(format, hivisSuffix) {
+		formatOpts.UseHivisEmojis = true
+		format = strings.TrimSuffix(format, hivisSuffix)
+	}
 	switch format {
 	case "debug":
 		return &formatAdapter{out, debugFormat}