Add test for R buildpack's get_preassemble_script_files
ADD
tests/unit/test_preassemble.py
+import os
+
+import pytest
+
+from repo2docker import buildpacks
+
+
+@pytest.mark.parametrize("binder_dir", ["", ".binder", "binder"])
+def test_combine_preassemble_steps(tmpdir, binder_dir):
+ tmpdir.chdir()
+ if binder_dir:
+ os.mkdir(binder_dir)
+
+ # create two empty files for the build pack to use for pre-assembly
+ open(os.path.join(binder_dir, "requirements.txt"), "w").close()
+ open(os.path.join(binder_dir, "install.R"), "w").close()
+
+ # trigger R build pack detection
+ with open(os.path.join(binder_dir, "runtime.txt"), "w") as f:
+ f.write("r-2019-01-30")
+
+ bp = buildpacks.RBuildPack()
+ files = bp.get_preassemble_script_files()
+
+ assert len(files) == 2
+ assert os.path.join(binder_dir, "requirements.txt") in files
+ assert os.path.join(binder_dir, "install.R") in files

Add test for R buildpack's get_preassemble_script_files