Merge pull request conda#3291 from HugoTian/conda-export-fix

Conda : Fix channel issue about list -e and create env from file

conda/cli/main_list.py

@@ -217,7 +217,8 @@ def execute(args, parser):
     if args.canonical:
         format = 'canonical'
     elif args.export:
-        format = 'export'
+        print_explicit(prefix, args.md5)
+        return
     else:
         format = 'human'
 

tests/test_export.py

@@ -0,0 +1,90 @@
+from .test_create import (make_temp_env, package_is_installed, PYTHON_BINARY,
+                          assert_package_is_installed, run_command, Commands,
+                          make_temp_prefix)
+from os.path import (exists, join, basename)
+from unittest import TestCase
+import tempfile
+import pytest
+
+from conda.install import rm_rf
+
+class ExportIntegrationTests(TestCase):
+
+    @pytest.mark.timeout(900)
+    def test_basic(self):
+        with make_temp_env("python=3") as prefix:
+            assert exists(join(prefix, PYTHON_BINARY))
+            assert_package_is_installed(prefix, 'python-3')
+
+            output, error = run_command(Commands.LIST, prefix, "-e")
+
+            with tempfile.NamedTemporaryFile(mode="w", suffix="txt", delete=False) as env_txt:
+                env_txt.write(output)
+                env_txt.flush()
+                env_txt.close()
+                prefix2 = make_temp_prefix()
+                run_command(Commands.CREATE, prefix2 , "--file " + env_txt.name)
+
+                assert_package_is_installed(prefix2, "python")
+
+            output2, error= run_command(Commands.LIST, prefix2, "-e")
+            self.assertEqual(output, output2)
+
+    def test_multi_channel_export(self):
+        """
+            When try to import from txt
+            every package should come from same channel
+        """
+        with make_temp_env("python=3") as prefix:
+            assert exists(join(prefix, PYTHON_BINARY))
+            assert_package_is_installed(prefix, 'python-3')
+
+            run_command(Commands.INSTALL, prefix, "six", "-c", "conda-forge")
+            assert_package_is_installed(prefix, "six")
+
+            output, error = run_command(Commands.LIST, prefix, "-e")
+            self.assertIn("conda-forge", output)
+
+            try:
+                with tempfile.NamedTemporaryFile(mode="w", suffix="txt", delete=False) as env_txt:
+                    env_txt.write(output)
+                    env_txt.close()
+                    prefix2 = make_temp_prefix()
+                    run_command(Commands.CREATE, prefix2 , "--file " + env_txt.name)
+
+                    assert_package_is_installed(prefix2, "python")
+                output2, error = run_command(Commands.LIST, prefix2, "-e")
+                self.assertEqual(output, output2)
+            finally:
+                rm_rf(env_txt.name)
+
+
+    def test_multi_channel_explicit(self):
+        """
+            When try to import from txt
+            every package should come from same channel
+        """
+        with make_temp_env("python=3") as prefix:
+            assert exists(join(prefix, PYTHON_BINARY))
+            assert_package_is_installed(prefix, 'python-3')
+
+            run_command(Commands.INSTALL, prefix, "six", "-c", "conda-forge")
+            assert_package_is_installed(prefix, "six")
+
+            output, error = run_command(Commands.LIST, prefix, "--explicit")
+            self.assertIn("conda-forge", output)
+
+            try:
+                with tempfile.NamedTemporaryFile(mode="w", suffix="txt", delete=False) as env_txt:
+                    env_txt.write(output)
+                    env_txt.close()
+                    prefix2 = make_temp_prefix()
+                    run_command(Commands.CREATE, prefix2, "--file " + env_txt.name)
+
+                    assert_package_is_installed(prefix2, "python")
+                    assert_package_is_installed(prefix2, "six")
+                output2, _ = run_command(Commands.LIST, prefix2, "--explicit")
+                self.assertEqual(output, output2)
+            finally:
+                rm_rf(env_txt.name)
+