chore: add more tests (#3203)

core/logx/logtest/logtest_test.go

@@ -14,6 +14,8 @@ func TestCollector(t *testing.T) {
 	logx.Info(input)
 	assert.Equal(t, input, c.Content())
 	assert.Contains(t, c.String(), input)
+	c.Reset()
+	assert.Empty(t, c.Bytes())
 }
 
 func TestPanicOnFatal(t *testing.T) {
@@ -21,8 +23,22 @@ func TestPanicOnFatal(t *testing.T) {
 	Discard(t)
 	logx.Info(input)
 
+	PanicOnFatal(t)
 	PanicOnFatal(t)
 	assert.Panics(t, func() {
 		logx.Must(errors.New("foo"))
 	})
 }
+
+func TestCollectorContent(t *testing.T) {
+	const input = "hello"
+	c := NewCollector(t)
+	c.buf.WriteString(input)
+	assert.Empty(t, c.Content())
+	c.Reset()
+	c.buf.WriteString(`{}`)
+	assert.Empty(t, c.Content())
+	c.Reset()
+	c.buf.WriteString(`{"content":1}`)
+	assert.Equal(t, "1", c.Content())
+}