v0.22.1 cli flag and behavior, and test output improvement

internal/format/adapter_test.go

@@ -0,0 +1,34 @@
+package format
+
+import (
+	"bytes"
+	"testing"
+	"time"
+
+	"github.com/lixenwraith/logwisp/internal/config"
+	"github.com/lixenwraith/logwisp/internal/core"
+)
+
+// Every payload is one record ending in exactly one newline, whatever the
+// type and whether or not the message carried its own.
+func TestEveryRecordEndsInOneNewline(t *testing.T) {
+	entries := []core.LogEntry{
+		{Message: "plain"},
+		{Message: "carried\n"},
+		{Fields: []byte(`{"k":1}`)},
+		{Message: "with", Fields: []byte(`{"k":1}`)},
+	}
+	for _, typ := range []string{"raw", "txt", "json"} {
+		f, err := NewFormatter(&config.FormatConfig{Type: typ})
+		if err != nil {
+			t.Fatal(err)
+		}
+		for _, e := range entries {
+			e.Time = time.Now()
+			out, _ := f.Format(e)
+			if !bytes.HasSuffix(out, []byte("\n")) || bytes.HasSuffix(out, []byte("\n\n")) {
+				t.Errorf("%s %+v: %q", typ, e, out)
+			}
+		}
+	}
+}