Terminal & Code: components 321-340

code_viewer_test.go

@@ -0,0 +1,151 @@
+package mujica
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/internal"
+)
+
+var codeViewerSample = []string{
+	"package court",
+	"",
+	"// Seal stamps a decree.",
+	"func Seal(d string) int {",
+	"\tif d == \"\" {",
+	"\t\treturn 0",
+	"\t}",
+	"\treturn 42",
+	"}",
+}
+
+func codeViewerTester(lines []string, s *CodeViewerState, disabled bool) *ui.Tester {
+	return ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		CodeViewer(c, lines, s, CodeViewerOptions{Language: "go", Label: "Source", Disabled: disabled}).Element.Height(400)
+	}, 520, 420)
+}
+
+func TestCodeViewerFoldRanges(t *testing.T) {
+	ends := codeViewerFolds(codeViewerSample, nil)
+	if ends[3] != 7 || ends[4] != 5 || ends[0] != 0 || ends[8] != 8 {
+		t.Fatalf("fold ends %v", ends)
+	}
+}
+
+func TestCodeViewerFoldsAndNumbers(t *testing.T) {
+	s := &CodeViewerState{}
+	tt := codeViewerTester(codeViewerSample, s, false)
+	if !tt.HasText("9") || !tt.HasText("\treturn 42") {
+		t.Fatalf("texts %q", tt.Texts())
+	}
+	if err := tt.Click("Fold line 4"); err != nil {
+		t.Fatal(err)
+	}
+	if tt.HasText("\treturn 42") || !tt.HasText("}") || len(s.shown) != 5 {
+		t.Fatalf("fold kept %d lines: %q", len(s.shown), tt.Texts())
+	}
+	if err := tt.Click("Unfold line 4"); err != nil {
+		t.Fatal(err)
+	}
+	if len(s.shown) != 9 {
+		t.Fatalf("unfold shows %d lines", len(s.shown))
+	}
+}
+
+func TestCodeViewerKeysCurrentLineAndCopy(t *testing.T) {
+	s := &CodeViewerState{}
+	tt := codeViewerTester(codeViewerSample, s, false)
+	for !tt.Focused("Source") {
+		tt.Key(0, ui.KeyTab)
+	}
+	tt.Key(0, ui.KeyDown)
+	tt.Key(ui.Shift, ui.KeyDown)
+	tt.Key(ui.Shift, ui.KeyDown)
+	tt.Key(ui.Cmd, ui.KeyC)
+	if want := "package court\n\n// Seal stamps a decree."; tt.Clipboard() != want {
+		t.Fatalf("copied %q", tt.Clipboard())
+	}
+	tt.Key(0, ui.KeyDown)
+	if s.Line() != 3 {
+		t.Fatalf("current line %d, want 3", s.Line())
+	}
+	tt.Key(0, ui.KeyLeft)
+	if !s.Folded.Has(3) || len(s.shown) != 5 {
+		t.Fatal("Left did not fold the block")
+	}
+	tt.Key(0, ui.KeyRight)
+	if s.Folded.Has(3) {
+		t.Fatal("Right did not unfold the block")
+	}
+}
+
+func TestCodeViewerGoToOpensFold(t *testing.T) {
+	s := &CodeViewerState{}
+	tt := codeViewerTester(codeViewerSample, s, false)
+	_ = tt.Click("Fold line 4")
+	s.GoTo(7)
+	tt.Frame()
+	if s.Line() != 7 || s.Folded.Has(3) {
+		t.Fatalf("GoTo gave line %d folded %v", s.Line(), s.Folded.Has(3))
+	}
+}
+
+func TestCodeViewerHighlightColors(t *testing.T) {
+	ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{Mode: Light})
+		k := Tokens(c)
+		kw, str := codeTokenColor(k, internal.TokKeyword), codeTokenColor(k, internal.TokString)
+		if kw != k.AccentText || str != k.Success {
+			t.Errorf("keyword %v string %v", kw, str)
+		}
+	}, 10, 10)
+}
+
+func TestCodeViewerHundredThousandLines(t *testing.T) {
+	lines := make([]string, 100_000)
+	for i := range lines {
+		lines[i] = fmt.Sprintf("x%d := %d // line", i, i)
+	}
+	s := &CodeViewerState{}
+	tt := codeViewerTester(lines, s, false)
+	rows := 0
+	for _, t := range tt.Texts() {
+		if strings.HasPrefix(t, "x") {
+			rows++
+		}
+	}
+	if rows == 0 || rows > 40 {
+		t.Fatalf("built %d rows of 100000", rows)
+	}
+	s.GoTo(99_998)
+	tt.Frame()
+	if !tt.HasText("x99998 := 99998 // line") {
+		t.Fatal("GoTo did not scroll to the end")
+	}
+}
+
+func TestCodeViewerDisabledFold(t *testing.T) {
+	s := &CodeViewerState{}
+	tt := codeViewerTester(codeViewerSample, s, true)
+	_ = tt.Click("Fold line 4")
+	if s.Folded.Len() != 0 {
+		t.Fatal("disabled viewer folded")
+	}
+}
+
+func TestCodeViewerSnapshot(t *testing.T) {
+	snapshot(t, "code_viewer", 480, 300, func(c *ui.Context) {
+		s := ui.Local(c.Root(), "snap", func() *CodeViewerState {
+			s := &CodeViewerState{}
+			s.GoTo(5)
+			return s
+		})
+		ui.Column(c).Padding(12).Children(func() {
+			CodeViewer(c, codeViewerSample, *s, CodeViewerOptions{Language: "go"}).Element.Height(276)
+		})
+	})
+}