v0.15.0 password recovery, phone layout, CLI pager, embed policy fixes

internal/client/display/output_test.go

@@ -0,0 +1,58 @@
+package display
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+)
+
+func TestPagePrintsScreensAndStopsOnQ(t *testing.T) {
+	var buf bytes.Buffer
+	prevOut, prevSize := Out, TermSize
+	Out = &buf
+	TermSize = func() (int, int) { return 5, 80 } // 4 lines a page
+	defer func() { Out, TermSize = prevOut, prevSize }()
+
+	var lines []string
+	for i := 1; i <= 10; i++ {
+		lines = append(lines, "line "+string(rune('0'+i%10)))
+	}
+	answers := []string{"", "q"}
+	reads := 0
+	readLine := func() (string, bool) {
+		if reads >= len(answers) {
+			return "", false
+		}
+		reads++
+		return answers[reads-1], true
+	}
+	Page(strings.Join(lines, "\n")+"\n", readLine)
+	out := buf.String()
+	if reads != 2 {
+		t.Errorf("prompted %d times, want 2", reads)
+	}
+	if !strings.Contains(out, "line 1\nline 2\nline 3\nline 4\n") || !strings.Contains(out, "More (6 lines left") {
+		t.Errorf("first page = %q", out)
+	}
+	if !strings.Contains(out, "line 5\nline 6\nline 7\nline 8\n") || strings.Contains(out, "line 9") {
+		t.Errorf("second page / stop = %q", out)
+	}
+
+	// Fits on one screen: no prompt. A wrapped long line counts as two rows.
+	buf.Reset()
+	reads = 0
+	Page("a\nb\n", readLine)
+	if buf.String() != "a\nb\n" || reads != 0 {
+		t.Errorf("short text = %q, prompts %d", buf.String(), reads)
+	}
+	if wrappedRows(Red+strings.Repeat("x", 100)+Reset, 80) != 2 || wrappedRows("", 80) != 1 {
+		t.Error("wrapped rows")
+	}
+	// No terminal: everything at once.
+	TermSize = func() (int, int) { return 0, 0 }
+	buf.Reset()
+	Page(strings.Join(lines, "\n"), readLine)
+	if strings.Count(buf.String(), "\n") != 10 || reads != 0 {
+		t.Errorf("unpaged = %q", buf.String())
+	}
+}