Split tests for jinja utils

tests/utils/test_rendering_utils.py

@@ -0,0 +1,17 @@
+import pytest
+
+from freqtrade.util import render_template, render_template_with_fallback
+
+
+def test_render_template_fallback():
+    from jinja2.exceptions import TemplateNotFound
+    with pytest.raises(TemplateNotFound):
+        val = render_template(
+            templatefile='subtemplates/indicators_does-not-exist.j2',)
+
+    val = render_template_with_fallback(
+        templatefile='strategy_subtemplates/indicators_does-not-exist.j2',
+        templatefallbackfile='strategy_subtemplates/indicators_minimal.j2',
+    )
+    assert isinstance(val, str)
+    assert 'if self.dp' in val