better domain isolation

internal/writing/html/fragment_test.go

@@ -0,0 +1,60 @@
+package html_test
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/nmoniz/any2anexoj/internal/writing"
+	htmlwriter "github.com/nmoniz/any2anexoj/internal/writing/html"
+)
+
+// TestWriter_RenderTableFragment renders a Portuguese document and asserts
+// the embedded report table fragment carries the shared structure: the
+// translated headers, the totals footer, and the strictly proportional
+// colgroup that keeps HTML columns in the same relation to each other as
+// the terminal layout.
+func TestWriter_RenderTableFragment(t *testing.T) {
+	aw := buildTestAggregator(t)
+
+	localizer, err := writing.NewLocalizer("pt")
+	if err != nil {
+		t.Fatalf("failed to create localizer: %v", err)
+	}
+
+	var buf bytes.Buffer
+	hw := htmlwriter.NewWriter(&buf, localizer, "pt")
+
+	if err := hw.Render(aw); err != nil {
+		t.Fatalf("Render returned an error: %v", err)
+	}
+	got := buf.String()
+
+	wantSubstrings := []string{
+		`<table class="table table-striped table-hover table-bordered" style="table-layout: fixed">`,
+		`<colgroup>`,
+		`</colgroup>`,
+		`<col style="width: 3.03%">`,
+		`<col style="width: 12.12%">`,
+		`</table>`,
+		`<thead>`,
+		`</thead>`,
+		`<tbody>`,
+		`</tbody>`,
+		`<tfoot>`,
+		`</tfoot>`,
+		"Realização",
+		"Aquisição",
+		"Soma",
+	}
+	for _, s := range wantSubstrings {
+		if !strings.Contains(got, s) {
+			t.Errorf("rendered document missing expected substring %q\nGot:\n%s", s, got)
+		}
+	}
+
+	// The fragment must be embedded raw, not HTML-escaped.
+	if strings.Contains(got, "&lt;table") {
+		t.Errorf("table fragment appears to be HTML-escaped; expected raw <table> markup\nGot:\n%s", got)
+	}
+}