test(table): add tests for table alignment

go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/charmbracelet/harmonica v0.2.0
 	github.com/charmbracelet/lipgloss v0.12.1
 	github.com/charmbracelet/x/ansi v0.1.4
+	github.com/charmbracelet/x/exp/golden v0.0.0-20240815200342-61de596daa2b
 	github.com/dustin/go-humanize v1.0.1
 	github.com/lucasb-eyer/go-colorful v1.2.0
 	github.com/mattn/go-runewidth v0.0.16
@@ -19,6 +20,7 @@ require (
 
 require (
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/aymanbagabas/go-udiff v0.2.0 // indirect
 	github.com/charmbracelet/x/input v0.1.0 // indirect
 	github.com/charmbracelet/x/term v0.1.1 // indirect
 	github.com/charmbracelet/x/windows v0.1.0 // indirect

go.sum

@@ -4,6 +4,8 @@ github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z
 github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
 github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
+github.com/aymanbagabas/go-udiff v0.2.0 h1:TK0fH4MteXUDspT88n8CKzvK0X9O2xu9yQjWpi6yML8=
+github.com/aymanbagabas/go-udiff v0.2.0/go.mod h1:RE4Ex0qsGkTAJoQdQQCA0uG+nAzJO/pI/QwceO5fgrA=
 github.com/charmbracelet/bubbletea v0.27.0 h1:Mznj+vvYuYagD9Pn2mY7fuelGvP0HAXtZYGgRBCbHvU=
 github.com/charmbracelet/bubbletea v0.27.0/go.mod h1:5MdP9XH6MbQkgGhnlxUqCNmBXf9I74KRQ8HIidRxV1Y=
 github.com/charmbracelet/harmonica v0.2.0 h1:8NxJWRWg/bzKqqEaaeFNipOu77YR5t8aSwG4pgaUBiQ=
@@ -12,6 +14,8 @@ github.com/charmbracelet/lipgloss v0.12.1 h1:/gmzszl+pedQpjCOH+wFkZr/N90Snz40J/N
 github.com/charmbracelet/lipgloss v0.12.1/go.mod h1:V2CiwIuhx9S1S1ZlADfOj9HmxeMAORuz5izHb0zGbB8=
 github.com/charmbracelet/x/ansi v0.1.4 h1:IEU3D6+dWwPSgZ6HBH+v6oUuZ/nVawMiWj5831KfiLM=
 github.com/charmbracelet/x/ansi v0.1.4/go.mod h1:dk73KoMTT5AX5BsX0KrqhsTqAnhZZoCBjs7dGWp4Ktw=
+github.com/charmbracelet/x/exp/golden v0.0.0-20240815200342-61de596daa2b h1:MnAMdlwSltxJyULnrYbkZpp4k58Co7Tah3ciKhSNo0Q=
+github.com/charmbracelet/x/exp/golden v0.0.0-20240815200342-61de596daa2b/go.mod h1:wDlXFlCrmJ8J+swcL/MnGUuYnqgQdW9rhSD61oNMb6U=
 github.com/charmbracelet/x/input v0.1.0 h1:TEsGSfZYQyOtp+STIjyBq6tpRaorH0qpwZUj8DavAhQ=
 github.com/charmbracelet/x/input v0.1.0/go.mod h1:ZZwaBxPF7IG8gWWzPUVqHEtWhc1+HXJPNuerJGRGZ28=
 github.com/charmbracelet/x/term v0.1.1 h1:3cosVAiPOig+EV4X9U+3LDgtwwAoEzJjNdwbXDjF6yI=

table/table_test.go

@@ -4,6 +4,8 @@ import (
 	"testing"
 
 	"github.com/charmbracelet/lipgloss"
+	"github.com/charmbracelet/x/ansi"
+	"github.com/charmbracelet/x/exp/golden"
 )
 
 func TestFromValues(t *testing.T) {
@@ -57,13 +59,11 @@ func deepEqual(a, b []Row) bool {
 	return true
 }
 
-var (
-	cols = []Column{
-		{Title: "col1", Width: 10},
-		{Title: "col2", Width: 10},
-		{Title: "col3", Width: 10},
-	}
-)
+var cols = []Column{
+	{Title: "col1", Width: 10},
+	{Title: "col2", Width: 10},
+	{Title: "col3", Width: 10},
+}
 
 func TestRenderRow(t *testing.T) {
 	tests := []struct {
@@ -108,3 +108,52 @@ func TestRenderRow(t *testing.T) {
 		})
 	}
 }
+
+func TestTableAlignment(t *testing.T) {
+	t.Run("No border", func(t *testing.T) {
+		biscuits := New(
+			WithHeight(5),
+			WithColumns([]Column{
+				{Title: "Name", Width: 25},
+				{Title: "Country of Origin", Width: 16},
+				{Title: "Dunk-able", Width: 12},
+			}),
+			WithRows([]Row{
+				{"Chocolate Digestives", "UK", "Yes"},
+				{"Tim Tams", "Australia", "No"},
+				{"Hobnobs", "UK", "Yes"},
+			}),
+		)
+		got := ansi.Strip(biscuits.View())
+		golden.RequireEqual(t, []byte(got))
+	})
+	t.Run("With border", func(t *testing.T) {
+		baseStyle := lipgloss.NewStyle().
+			BorderStyle(lipgloss.NormalBorder()).
+			BorderForeground(lipgloss.Color("240"))
+
+		s := DefaultStyles()
+		s.Header = s.Header.
+			BorderStyle(lipgloss.NormalBorder()).
+			BorderForeground(lipgloss.Color("240")).
+			BorderBottom(true).
+			Bold(false)
+
+		biscuits := New(
+			WithHeight(5),
+			WithColumns([]Column{
+				{Title: "Name", Width: 25},
+				{Title: "Country of Origin", Width: 16},
+				{Title: "Dunk-able", Width: 12},
+			}),
+			WithRows([]Row{
+				{"Chocolate Digestives", "UK", "Yes"},
+				{"Tim Tams", "Australia", "No"},
+				{"Hobnobs", "UK", "Yes"},
+			}),
+			WithStyles(s),
+		)
+		got := ansi.Strip(baseStyle.Render(biscuits.View()))
+		golden.RequireEqual(t, []byte(got))
+	})
+}

table/testdata/TestTableAlignment/No_border.golden

@@ -0,0 +1,5 @@
+ Name                       Country of Orig…  Dunk-able    
+ Chocolate Digestives       UK                Yes          
+ Tim Tams                   Australia         No           
+ Hobnobs                    UK                Yes          
+

table/testdata/TestTableAlignment/With_border.golden

@@ -0,0 +1,8 @@
+┌───────────────────────────────────────────────────────────┐
+│ Name                       Country of Orig…  Dunk-able    │
+│───────────────────────────────────────────────────────────│
+│ Chocolate Digestives       UK                Yes          │
+│ Tim Tams                   Australia         No           │
+│ Hobnobs                    UK                Yes          │
+│                                                           │
+└───────────────────────────────────────────────────────────┘