Feat: join_pdf work

bopytex/worker/join_pdf.py

@@ -0,0 +1,17 @@
+import subprocess
+
+def pdfjam(args: dict, deps, output):
+    joining_process = subprocess.Popen(
+        ["pdfjam"] +  deps + ["-o", output],
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        universal_newlines=True,
+    )
+    # exit_code is always 66...
+    exit_code = joining_process.wait()
+
+    if  exit_code == 0:
+        yield "pdfjam success"
+    else:
+        yield "pdfjam failed"
+

test/worker/test_join_pdf.py

@@ -0,0 +1,51 @@
+import os
+
+import shutil
+from pathlib import Path
+from bopytex.worker.join_pdf import pdfjam
+import pytest
+
+
+@pytest.fixture
+def multiple_pdf(tmp_path, request):
+    this_file = Path(request.module.__file__)
+
+    source = this_file.parent / "source.pdf"
+    assert source.exists()
+    qty = 3
+    dests = []
+    for i in range(qty):
+        dest = tmp_path / f"source_{i}.pdf"
+        shutil.copyfile(source, dest)
+        assert dest.exists()
+        dests.append(dest)
+
+    return dests
+
+
+def test_join_pdf(multiple_pdf):
+    tmp_path = multiple_pdf[0].parent
+    os.chdir(tmp_path)
+
+    deps = [str(d.name) for d in multiple_pdf]
+
+    output = "joined.pdf"
+
+    for msg in pdfjam({"pwd": Path.cwd()}, deps, output):
+        assert msg == "pdfjam success"
+
+    assert Path(output).exists()
+
+
+def test_join_pdf_failed(multiple_pdf):
+    tmp_path = multiple_pdf[0].parent
+    os.chdir(tmp_path)
+
+    deps = [str(d.name) for d in multiple_pdf] + ["doesnotexists.pdf"]
+
+    output = "joined.pdf"
+
+    for msg in pdfjam({"pwd": Path.cwd()}, deps, output):
+        assert msg == "pdfjam failed"
+
+    assert not Path(output).exists()