finished testing latex engine

pdf_generator/templates/test/generic.tex

+Presenting: \VAR{selected_analysis}

pdf_generator/templates/test/main.tex

+render_test.tex
\ No newline at end of file

pdf_generator/templates/test/meta_data.tex

+render_test.tex
\ No newline at end of file

test/unit/tex_generation/test_template_engine.py

 from pathlib import Path
 
+import pytest
 from pdf_generator.tex_generation.template_engine import (
-    byte_number_filter, convert_base64_to_png_filter, nice_number_filter, nice_unix_time, split_hash, split_output_lines
+    Engine, byte_number_filter, convert_base64_to_png_filter, filter_chars_in_list, filter_latex_special_chars,
+    nice_number_filter, nice_unix_time, split_hash, split_output_lines
 )
 
+# pylint: disable=redefined-outer-name
+
+
+@pytest.fixture(scope='function')
+def stub_engine(tmpdir):
+    return Engine(template_folder='test', tmp_dir=tmpdir)
+
 
 def test_byte_number_filter():
     assert byte_number_filter(None) == 'not available'
@@ -43,3 +52,28 @@ def test_split_output_lines():
 def test_convert_base64_to_png_filter(tmpdir):
     convert_base64_to_png_filter('0000', 'testfile', str(tmpdir))
     assert Path(str(tmpdir), 'testfile.png').read_bytes() == b'\xd3\x4d\x34'
+
+
+def test_filter_latex_special_chars():
+    assert filter_latex_special_chars('safe') == 'safe'
+
+    assert filter_latex_special_chars(r'C:\Windows') == r'C:Windows'
+    assert filter_latex_special_chars(r'100 $') == r'100 \$'
+
+
+def test_filter_chars_in_list():
+    assert filter_chars_in_list([]) == []
+
+    assert filter_chars_in_list([r'safe', r'un\safe']) == ['safe', 'unsafe']
+
+
+def test_render_meta_template(stub_engine):
+    assert stub_engine.render_meta_template(meta_data='anything') == 'Test anything - '
+
+
+def test_render_main_template(stub_engine):
+    assert stub_engine.render_main_template(meta_data='anything', analysis='else') == 'Test anything - else'
+
+
+def test_render_analysis_template(stub_engine):
+    assert stub_engine.render_analysis_template(plugin='non_existing', analysis='result') == 'Presenting: result'