Use hue for colouring (#55)

go.mod

@@ -3,13 +3,12 @@ module github.com/FollowTheProcess/test
 go 1.23
 
 require (
-	github.com/FollowTheProcess/snapshot v0.3.0
-	github.com/fatih/color v1.18.0
+	github.com/FollowTheProcess/hue v0.1.1
+	github.com/FollowTheProcess/snapshot v0.4.0
 	golang.org/x/tools v0.29.0
 )
 
 require (
-	github.com/mattn/go-colorable v0.1.14 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
 	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/term v0.28.0 // indirect
 )

go.sum

@@ -1,13 +1,16 @@
-github.com/FollowTheProcess/snapshot v0.3.0 h1:LpTQCtuT0dTeWi2HhmHgHu17TtZlRPMBGtOzlQfh9HY=
-github.com/FollowTheProcess/snapshot v0.3.0/go.mod h1:ADH1yxxSZgDhTH5hUe+g0gB+ZQ/TGELfPHTw853qJjw=
+github.com/FollowTheProcess/hue v0.1.1 h1:7lbqq2pwIsB5qvir1RvIvNQLXWOdTl/IOqHHxI1vJu8=
+github.com/FollowTheProcess/hue v0.1.1/go.mod h1:T9IMtR7WyOoEKreUHsnEZnmn86su94g9Y/Hb4WszBUo=
+github.com/FollowTheProcess/snapshot v0.4.0 h1:/fbFtmDG4wO0rp1X2uSlkdlbx09oSDZbjut0AwaO5V0=
+github.com/FollowTheProcess/snapshot v0.4.0/go.mod h1:F1o4iTqDixcDJjKOVIAIKdjCbVyVgKEehkmpZbNtxlQ=
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
 github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
-github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
-github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
 golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/term v0.28.0 h1:/Ts8HFuMR2E6IP/jlo7QVLZHggjKQbhu/7H0LJFr3Gg=
+golang.org/x/term v0.28.0/go.mod h1:Sw/lC2IAUZ92udQNf3WodGtn4k/XoLyZoh8v/8uiwek=
 golang.org/x/tools v0.29.0 h1:Xx0h3TtM9rzQpQuR4dKLrdglAmCEN5Oi+P74JdhdzXE=
 golang.org/x/tools v0.29.0/go.mod h1:KMQVMRsVxU6nHCFXrBPhDB8XncLNLM0lIy/F14RP588=

test.go

@@ -15,14 +15,14 @@ import (
 	"sync"
 	"testing"
 
+	"github.com/FollowTheProcess/hue"
 	"github.com/FollowTheProcess/test/internal/diff"
-	"github.com/fatih/color"
 )
 
-var (
-	header = color.New(color.FgCyan, color.Bold)
-	green  = color.New(color.FgGreen)
-	red    = color.New(color.FgRed)
+const (
+	header = hue.Cyan | hue.Bold
+	green  = hue.Green
+	red    = hue.Red
 )
 
 // Equal fails if got != want.
@@ -441,12 +441,6 @@ func CaptureOutput(tb testing.TB, fn func() error) (stdout, stderr string) {
 
 // prettyDiff takes a string diff in unified diff format and colourises it for easier viewing.
 func prettyDiff(diff string) string {
-	// color by default will look at whether stdout is a tty and the value of the
-	// $NO_COLOR env var, we need to override this because go test buffers output
-	// so it will appear as if it's not a tty, even though the end result is to show
-	// the output in a terminal. It still respects the value of $NO_COLOR.
-	color.NoColor = false || os.Getenv("NO_COLOR") != ""
-
 	lines := strings.Split(diff, "\n")
 	for i := 0; i < len(lines); i++ {
 		trimmed := strings.TrimSpace(lines[i])

test_test.go

@@ -434,8 +434,7 @@ func TestTest(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			buf := &bytes.Buffer{}
 			tb := &TB{out: buf}
-			t.Setenv("NO_COLOR", "true")
-			snap := snapshot.New(t, snapshot.Update(*update))
+			snap := snapshot.New(t, snapshot.Update(*update), snapshot.Color(false))
 
 			if tb.failed {
 				t.Fatalf("%s initial failed state should be false", tt.name)