Dev 459 sample table index

peppy/project.py

@@ -1,6 +1,7 @@
 """
 Build a Project object.
 """
+
 import os
 import sys
 from collections.abc import Mapping, MutableMapping

peppy/sample.py

@@ -302,6 +302,16 @@ def project(self):
         """
         return self[PRJ_REF]
 
+    @property
+    def sample_name(self):
+        """
+        Get the sample's name
+
+        :return str: current sample name derived from project's st_index
+        """
+
+        return self[self[PRJ_REF].st_index]
+
     # The __reduce__ function provides an interface for
     # correct object serialization with the pickle module.
     def __reduce__(self):

tests/conftest.py

@@ -51,6 +51,11 @@ def example_pep_cfg_noname_path(request):
     return get_path_to_example_file(EPB, "noname", request.param)
 
 
+@pytest.fixture
+def example_pep_cfg_custom_index(request):
+    return get_path_to_example_file(EPB, "custom_index", request.param)
+
+
 @pytest.fixture
 def example_peps_cfg_paths(request):
     """

tests/data/example_peps-master/example_custom_index/project_config.yaml

@@ -1,3 +1,3 @@
 pep_version: "2.0.0"
 sample_table: sample_table.csv
-sample_table_index: sample_id
+sample_table_index: NOT_SAMPLE_NAME

tests/data/example_peps-master/example_custom_index/sample_table.csv

@@ -1,3 +1,3 @@
-sample_id,protocol,file
+NOT_SAMPLE_NAME,protocol,file
 frog_1,anySampleType,data/frog1_data.txt
 frog_2,anySampleType,data/frog2_data.txt

tests/test_Project.py

@@ -322,6 +322,17 @@ def test_missing_sample_name_custom_index(self, example_pep_cfg_noname_path):
         p = Project(cfg=example_pep_cfg_noname_path, sample_table_index="id")
         assert p.sample_name_colname == "id"
 
+    @pytest.mark.parametrize(
+        "example_pep_cfg_custom_index", ["project_config.yaml"], indirect=True
+    )
+    def test_sample_name_custom_index(self, example_pep_cfg_custom_index):
+        """
+        Verify that sample_name attribute becomes st_index from cfg
+        """
+        p = Project(cfg=example_pep_cfg_custom_index)
+        assert p.sample_name_colname == "NOT_SAMPLE_NAME"
+        assert p.samples[0].sample_name == "frog_1"
+
     @pytest.mark.parametrize(
         "example_pep_cfg_path",
         ["basic"],