Manually merge from 'pre-kjol' into 'master'

go/tw/tailwind_test.go

@@ -42,6 +42,71 @@ func TestEngineEdgeCases(t *testing.T) {
 	}
 }
 
+// @source inline(...) safelists candidates that aren't present in the scanned
+// source files at all (brace expansion covers the color/shade cross product).
+func TestSourceInlineSafelist(t *testing.T) {
+	css, _, err := twCompile(
+		`@import "tailwindcss";
+@source inline("{text,bg}-{red,blue}-{100,500}");`,
+		".", nil)
+	if err != nil {
+		t.Fatalf("twCompile error: %v", err)
+	}
+	for _, want := range []string{
+		"color: var(--color-red-100)",
+		"color: var(--color-red-500)",
+		"color: var(--color-blue-100)",
+		"color: var(--color-blue-500)",
+		"background-color: var(--color-red-100)",
+		"background-color: var(--color-blue-500)",
+	} {
+		if !strings.Contains(css, want) {
+			t.Errorf("expected safelisted output to contain %q\n---\n%s", want, css)
+		}
+	}
+}
+
+// `not inline(...)` removes a candidate even if the scanner found it in source.
+func TestSourceNotInlineRemoves(t *testing.T) {
+	css, _, err := twCompile(
+		`@import "tailwindcss";
+@source not inline("bg-red-500");`,
+		".", []string{"bg-red-500", "bg-blue-500"})
+	if err != nil {
+		t.Fatalf("twCompile error: %v", err)
+	}
+	if strings.Contains(css, "background-color: var(--color-red-500)") {
+		t.Errorf("expected bg-red-500 to be excluded by `not inline`\n---\n%s", css)
+	}
+	if !strings.Contains(css, "background-color: var(--color-blue-500)") {
+		t.Errorf("expected bg-blue-500 to remain\n---\n%s", css)
+	}
+}
+
+func TestExpandBraces(t *testing.T) {
+	cases := []struct {
+		in   string
+		want []string
+	}{
+		{"flex", []string{"flex"}},
+		{"{a,b}", []string{"a", "b"}},
+		{"{1..3}", []string{"1", "2", "3"}},
+		{"{text,bg}-{red,blue}", []string{"text-red", "text-blue", "bg-red", "bg-blue"}},
+	}
+	for _, c := range cases {
+		got := expandBraces(c.in)
+		if len(got) != len(c.want) {
+			t.Errorf("expandBraces(%q) = %v, want %v", c.in, got, c.want)
+			continue
+		}
+		for i := range got {
+			if got[i] != c.want[i] {
+				t.Errorf("expandBraces(%q)[%d] = %q, want %q", c.in, i, got[i], c.want[i])
+			}
+		}
+	}
+}
+
 func TestSegmentTopLevel(t *testing.T) {
 	cases := []struct {
 		in   string