[tests] Add tests for pyicu recipe

tests/recipes/test_pyicu.py

@@ -0,0 +1,88 @@
+import os
+
+import unittest
+
+try:
+    from unittest import mock
+except ImportError:
+    # `Python 2` or lower than `Python 3.3` does not
+    # have the `unittest.mock` module built-in
+    import mock
+from pythonforandroid.bootstrap import Bootstrap
+from pythonforandroid.distribution import Distribution
+from pythonforandroid.recipe import Recipe
+from pythonforandroid.build import Context
+from pythonforandroid.archs import ArchARMv7_a
+
+
+class TestPyIcuRecipe(unittest.TestCase):
+    """
+    An unittest for recipe :mod:`~pythonforandroid.recipes.pyicu`
+    """
+
+    ctx = None
+
+    def setUp(self):
+        self.ctx = Context()
+        self.ctx.ndk_api = 21
+        self.ctx.android_api = 27
+        self.ctx._sdk_dir = "/opt/android/android-sdk"
+        self.ctx._ndk_dir = "/opt/android/android-ndk"
+        self.ctx.setup_dirs(os.getcwd())
+        self.ctx.bootstrap = Bootstrap().get_bootstrap("sdl2", self.ctx)
+        self.ctx.bootstrap.distribution = Distribution.get_distribution(
+            self.ctx, name="sdl2", recipes=["python3", "kivy", "pyicu"]
+        )
+        self.ctx.recipe_build_order = [
+            "hostpython3",
+            "icu",
+            "python3",
+            "sdl2",
+            "pyicu",
+            "kivy",
+        ]
+        self.ctx.python_recipe = Recipe.get_recipe("python3", self.ctx)
+
+    @mock.patch("pythonforandroid.recipe.Recipe.check_recipe_choices")
+    @mock.patch("pythonforandroid.build.ensure_dir")
+    @mock.patch("pythonforandroid.archs.glob")
+    @mock.patch("pythonforandroid.archs.find_executable")
+    def test_get_recipe_env(
+        self,
+        mock_find_executable,
+        mock_glob,
+        mock_ensure_dir,
+        mock_check_recipe_choices,
+    ):
+        """
+        Test that method
+        :meth:`~pythonforandroid.recipes.pyicu.PyICURecipe.get_recipe_env`
+        returns the expected flags
+        """
+        arch = ArchARMv7_a(self.ctx)
+        recipe = Recipe.get_recipe("pyicu", self.ctx)
+
+        icu_recipe = Recipe.get_recipe("icu", self.ctx)
+
+        mock_find_executable.return_value = (
+            "/opt/android/android-ndk/toolchains/"
+            "llvm/prebuilt/linux-x86_64/bin/clang"
+        )
+        mock_glob.return_value = ["llvm"]
+        mock_check_recipe_choices.return_value = sorted(
+            self.ctx.recipe_build_order
+        )
+
+        expected_pyicu_libs = [
+            lib[3:-3] for lib in icu_recipe.built_libraries.keys()
+        ]
+        env = recipe.get_recipe_env(arch)
+        self.assertEqual(":".join(expected_pyicu_libs), env["PYICU_LIBRARIES"])
+        self.assertIn("include/icu", env["CPPFLAGS"])
+        self.assertIn("icu4c/icu_build/lib", env["LDFLAGS"])
+
+        # make sure that the mocked methods are actually called
+        mock_glob.assert_called()
+        mock_ensure_dir.assert_called()
+        mock_find_executable.assert_called()
+        mock_check_recipe_choices.assert_called()