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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os
import sys
from io import StringIO

import mozunit

from mozbuild.util import ensureParentDir
from mozpack.errors import AccumulatedErrors, ErrorMessage, errors
from mozpack.files import FileFinder
from mozpack.mozjar import JarWriter
from mozpack.test.test_files import MockDest, TestWithTmpDir
from mozpack.unify import UnifiedBuildFinder, UnifiedFinder


class TestUnified(TestWithTmpDir):
    def create_one(self, which, path, content):
        file = self.tmppath(os.path.join(which, path))
        ensureParentDir(file)
        if isinstance(content, str):
            content = content.encode("utf-8")
        open(file, "wb").write(content)

    def create_both(self, path, content):
        for p in ["a", "b"]:
            self.create_one(p, path, content)


class TestUnifiedFinder(TestUnified):
    def test_unified_finder(self):
        self.create_both("foo/bar", "foobar")
        self.create_both("foo/baz", "foobaz")
        self.create_one("a", "bar", "bar")
        self.create_one("b", "baz", "baz")
        self.create_one("a", "qux", "foobar")
        self.create_one("b", "qux", "baz")
        self.create_one("a", "test/foo", "a\nb\nc\n")
        self.create_one("b", "test/foo", "b\nc\na\n")
        self.create_both("test/bar", "a\nb\nc\n")

        finder = UnifiedFinder(
            FileFinder(self.tmppath("a")),
            FileFinder(self.tmppath("b")),
            sorted=["test"],
        )
        self.assertEqual(
            sorted(
                [(f, c.open().read().decode("utf-8")) for f, c in finder.find("foo")]
            ),
            [("foo/bar", "foobar"), ("foo/baz", "foobaz")],
        )
        self.assertRaises(ErrorMessage, any, finder.find("bar"))
        self.assertRaises(ErrorMessage, any, finder.find("baz"))
        self.assertRaises(ErrorMessage, any, finder.find("qux"))
        self.assertEqual(
            sorted(
                [(f, c.open().read().decode("utf-8")) for f, c in finder.find("test")]
            ),
            [("test/bar", "a\nb\nc\n"), ("test/foo", "a\nb\nc\n")],
        )


class TestUnifiedBuildFinder(TestUnified):
    def test_unified_build_finder(self):
        finder = UnifiedBuildFinder(
            FileFinder(self.tmppath("a")), FileFinder(self.tmppath("b"))
        )

        # Test chrome.manifest unification
        self.create_both("chrome.manifest", "a\nb\nc\n")
        self.create_one("a", "chrome/chrome.manifest", "a\nb\nc\n")
        self.create_one("b", "chrome/chrome.manifest", "b\nc\na\n")
        self.assertEqual(
            sorted(
                [
                    (f, c.open().read().decode("utf-8"))
                    for f, c in finder.find("**/chrome.manifest")
                ]
            ),
            [("chrome.manifest", "a\nb\nc\n"), ("chrome/chrome.manifest", "a\nb\nc\n")],
        )

        # Test buildconfig.html unification
        self.create_one(
            "a",
            "chrome/browser/foo/buildconfig.html",
            "\n".join(
                [
                    "<html>",
                    "  <body>",
                    "    <div>",
                    "      <h1>Build Configuration</h1>",
                    "      <div>foo</div>",
                    "    </div>",
                    "  </body>",
                    "</html>",
                ]
            ),
        )
        self.create_one(
            "b",
            "chrome/browser/foo/buildconfig.html",
            "\n".join(
                [
                    "<html>",
                    "  <body>",
                    "    <div>",
                    "      <h1>Build Configuration</h1>",
                    "      <div>bar</div>",
                    "    </div>",
                    "  </body>",
                    "</html>",
                ]
            ),
        )
        self.assertEqual(
            sorted(
                [
                    (f, c.open().read().decode("utf-8"))
                    for f, c in finder.find("**/buildconfig.html")
                ]
            ),
            [
                (
                    "chrome/browser/foo/buildconfig.html",
                    "\n".join(
                        [
                            "<html>",
                            "  <body>",
                            "    <div>",
                            "      <h1>Build Configuration</h1>",
                            "      <div>foo</div>",
                            "      <hr> </hr>",
                            "      <div>bar</div>",
                            "    </div>",
                            "  </body>",
                            "</html>",
                        ]
                    ),
                )
            ],
        )

        # Test xpi file unification
        xpi = MockDest()
        with JarWriter(fileobj=xpi, compress=True) as jar:
            jar.add("foo", "foo")
            jar.add("bar", "bar")
        foo_xpi = xpi.read()
        self.create_both("foo.xpi", foo_xpi)

        with JarWriter(fileobj=xpi, compress=True) as jar:
            jar.add("foo", "bar")
        self.create_one("a", "bar.xpi", foo_xpi)
        self.create_one("b", "bar.xpi", xpi.read())

        errors.out = StringIO()
        with self.assertRaises(AccumulatedErrors), errors.accumulate():
            self.assertEqual(
                [(f, c.open().read()) for f, c in finder.find("*.xpi")],
                [("foo.xpi", foo_xpi)],
            )
        errors.out = sys.stderr

        # Test install.rdf unification
        x86_64 = "Darwin_x86_64-gcc3"
        x86 = "Darwin_x86-gcc3"
        target_tag = "<{em}targetPlatform>{platform}</{em}targetPlatform>"
        target_attr = '{em}targetPlatform="{platform}" '

        rdf_tag = "".join(
            [
                '<{RDF}Description {em}bar="bar" {em}qux="qux">',
                "<{em}foo>foo</{em}foo>",
                "{targets}",
                "<{em}baz>baz</{em}baz>",
                "</{RDF}Description>",
            ]
        )
        rdf_attr = "".join(
            [
                '<{RDF}Description {em}bar="bar" {attr}{em}qux="qux">',
                "{targets}",
                "<{em}foo>foo</{em}foo><{em}baz>baz</{em}baz>",
                "</{RDF}Description>",
            ]
        )

        for descr_ns, target_ns in (("RDF:", ""), ("", "em:"), ("RDF:", "em:")):
            # First we need to infuse the above strings with our namespaces and
            # platform values.
            ns = {"RDF": descr_ns, "em": target_ns}
            target_tag_x86_64 = target_tag.format(platform=x86_64, **ns)
            target_tag_x86 = target_tag.format(platform=x86, **ns)
            target_attr_x86_64 = target_attr.format(platform=x86_64, **ns)
            target_attr_x86 = target_attr.format(platform=x86, **ns)

            tag_x86_64 = rdf_tag.format(targets=target_tag_x86_64, **ns)
            tag_x86 = rdf_tag.format(targets=target_tag_x86, **ns)
            tag_merged = rdf_tag.format(
                targets=target_tag_x86_64 + target_tag_x86, **ns
            )
            tag_empty = rdf_tag.format(targets="", **ns)

            attr_x86_64 = rdf_attr.format(attr=target_attr_x86_64, targets="", **ns)
            attr_x86 = rdf_attr.format(attr=target_attr_x86, targets="", **ns)
            attr_merged = rdf_attr.format(
                attr="", targets=target_tag_x86_64 + target_tag_x86, **ns
            )

            # This table defines the test cases, columns "a" and "b" being the
            # contents of the install.rdf of the respective platform and
            # "result" the exepected merged content after unification.
            testcases = (
                # _____a_____  _____b_____  ___result___#
                (tag_x86_64, tag_x86, tag_merged),
                (tag_x86_64, tag_empty, tag_empty),
                (tag_empty, tag_x86, tag_empty),
                (tag_empty, tag_empty, tag_empty),
                (attr_x86_64, attr_x86, attr_merged),
                (tag_x86_64, attr_x86, tag_merged),
                (attr_x86_64, tag_x86, attr_merged),
                (attr_x86_64, tag_empty, tag_empty),
                (tag_empty, attr_x86, tag_empty),
            )

            # Now create the files from the above table and compare
            results = []
            for emid, (rdf_a, rdf_b, result) in enumerate(testcases):
                filename = "ext/id{0}/install.rdf".format(emid)
                self.create_one("a", filename, rdf_a)
                self.create_one("b", filename, rdf_b)
                results.append((filename, result))

            self.assertEqual(
                sorted(
                    [
                        (f, c.open().read().decode("utf-8"))
                        for f, c in finder.find("**/install.rdf")
                    ]
                ),
                results,
            )


if __name__ == "__main__":
    mozunit.main()