fetch2: Add tests for upstream source tracingalpianon/srctrace2

This patch adds test data and test cases for TraceUnpack.
Test data consists of expected output json files for a set of
real-world recipes presenting one or more peculiarities that
need to be correctly handled.

Signed-off-by: Alberto Pianon <alberto@pianon.eu>

11 files changed, 853 insertions, 0 deletions

diff --git a/bin/bitbake-selftest b/bin/bitbake-selftest
index 6d60a5d2..139debe1 100755
--- a/bin/bitbake-selftest
+++ b/bin/bitbake-selftest
@@ -32,6 +32,7 @@ tests = ["bb.tests.codeparser",
          "bb.tests.siggen",
          "bb.tests.utils",
          "bb.tests.trace_base",
+         "bb.tests.trace",
          "bb.tests.compression",
          "hashserv.tests",
          "layerindexlib.tests.layerindexobj",
diff --git a/lib/bb/tests/trace-testdata/bzip2-1.0.8.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/bzip2-1.0.8.unpack.trace.json.zst
new file mode 100644
index 00000000..9e32119d
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/bzip2-1.0.8.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/gettext-minimal-native-0.21.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/gettext-minimal-native-0.21.unpack.trace.json.zst
new file mode 100644
index 00000000..bfcaa683
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/gettext-minimal-native-0.21.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/gosu-1.14.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/gosu-1.14.unpack.trace.json.zst
new file mode 100644
index 00000000..801601c0
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/gosu-1.14.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/npm-shrinkwrap-test.json b/lib/bb/tests/trace-testdata/npm-shrinkwrap-test.json
new file mode 100644
index 00000000..59a1042d
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/npm-shrinkwrap-test.json
@@ -0,0 +1,307 @@
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+    "name": "test_npm",
+    "version": "1.0.0",
+    "lockfileVersion": 1,
+    "requires": true,
+    "dependencies": {
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+        "version": "git+https://github.com/pbarabolkin/node-file-renamer.git#ac02bfa928658ad7c9c9f13452e7884eb4564542",
+        "from": "git+https://github.com/pbarabolkin/node-file-renamer.git#ac02bfa928658ad7c9c9f13452e7884eb4564542",
+        "requires": {
+          "fs": "^0.0.1-security",
+          "glob": "^10.1.0",
+          "optimist": "^0.6.1",
+          "path": "^0.12.7"
+        },
+        "dependencies": {
+          "fs": {
+            "version": "0.0.1-security",
+            "resolved": "https://registry.npmjs.org/fs/-/fs-0.0.1-security.tgz",
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+            "resolved": "https://registry.npmjs.org/glob/-/glob-10.1.0.tgz",
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+              "minimatch": "^9.0.0",
+              "minipass": "^5.0.0",
+              "path-scurry": "^1.7.0"
+            },
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+                        "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
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+                "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-1.7.0.tgz",
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+                "requires": {
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+                  "minipass": "^5.0.0"
+                },
+                "dependencies": {
+                  "lru-cache": {
+                    "version": "9.0.3",
+                    "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-9.0.3.tgz",
+                    "integrity": "sha512-cyjNRew29d4kbgnz1sjDqxg7qg8NW4s+HQzCGjeon7DV5T2yDije16W9HaUFV1dhVEMh+SjrOcK0TomBmf3Egg=="
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+                }
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+            }
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+            "resolved": "https://registry.npmjs.org/optimist/-/optimist-0.6.1.tgz",
+            "integrity": "sha512-snN4O4TkigujZphWLN0E//nQmm7790RYaE53DdL7ZYwee2D8DDo9/EyYiKUfN3rneWUjhJnueija3G9I2i0h3g==",
+            "requires": {
+              "minimist": "~0.0.1",
+              "wordwrap": "~0.0.2"
+            },
+            "dependencies": {
+              "minimist": {
+                "version": "0.0.10",
+                "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
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+                "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-0.0.3.tgz",
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+              }
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+            },
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+                  }
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+            }
+          }
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+        "requires": {
+          "glob": "^7.0.0",
+          "interpret": "^1.0.0",
+          "rechoir": "^0.6.2"
+        },
+        "dependencies": {
+          "glob": {
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+            "requires": {
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+              "inflight": "^1.0.4",
+              "inherits": "2",
+              "minimatch": "^3.1.1",
+              "once": "^1.3.0",
+              "path-is-absolute": "^1.0.0"
+            },
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+                  "once": "^1.3.0",
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+                },
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+                      },
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+                        "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+                        "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="
+                      }
+                    }
+                  }
+                }
+              },
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+                "requires": {
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+                },
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+                  }
+                }
+              },
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+              }
+            }
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+          },
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+            "resolved": "https://registry.npmjs.org/rechoir/-/rechoir-0.6.2.tgz",
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+            },
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+                },
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diff --git a/lib/bb/tests/trace-testdata/ot-br-posix-0.3.0+git083fb6921903441bf44f46c263c123eb4af6e4a9.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/ot-br-posix-0.3.0+git083fb6921903441bf44f46c263c123eb4af6e4a9.unpack.trace.json.zst
new file mode 100644
index 00000000..284d1b94
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/ot-br-posix-0.3.0+git083fb6921903441bf44f46c263c123eb4af6e4a9.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/python3-cryptography-37.0.4.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/python3-cryptography-37.0.4.unpack.trace.json.zst
new file mode 100644
index 00000000..066093c2
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/python3-cryptography-37.0.4.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/snappy-1.1.9.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/snappy-1.1.9.unpack.trace.json.zst
new file mode 100644
index 00000000..1c78bd0c
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/snappy-1.1.9.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/systemd-251.8.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/systemd-251.8.unpack.trace.json.zst
new file mode 100644
index 00000000..bc99b12d
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/systemd-251.8.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace-testdata/test_npm-1.0.0.unpack.trace.json.zst b/lib/bb/tests/trace-testdata/test_npm-1.0.0.unpack.trace.json.zst
new file mode 100644
index 00000000..3c8b1524
--- /dev/null
+++ b/lib/bb/tests/trace-testdata/test_npm-1.0.0.unpack.trace.json.zst
diff --git a/lib/bb/tests/trace.py b/lib/bb/tests/trace.py
new file mode 100644
index 00000000..489de854
--- /dev/null
+++ b/lib/bb/tests/trace.py
@@ -0,0 +1,545 @@
+
+# Copyright (C) 2023 Alberto Pianon <pianon@array.eu>
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+import os
+import re
+import json
+import shutil
+import unittest
+import tempfile
+from pathlib import Path
+import subprocess
+
+import bb
+
+from bb.tests.trace_base import create_file
+
+def skipIfNoNetwork():
+    if os.environ.get("BB_SKIP_NETTESTS") == "yes":
+        return unittest.skip("network test")
+    return lambda f: f
+
+class SplitVarValueTest(unittest.TestCase):
+
+    def test_split_var_value_with_items_without_spaces(self):
+        items_without_spaces = [
+            "git://github.com/systemd/systemd-stable.git;protocol=https;branch=${SRCBRANCH}",
+            "${SRC_URI_MUSL}",
+            "file://0001-Adjust-for-musl-headers.patch"
+        ]
+        var_value = " ".join(items_without_spaces)
+        self.assertEqual(
+            bb.fetch2.trace.split_var_value(var_value, False), items_without_spaces)
+
+    def test_split_var_value_with_items_with_spaces(self):
+        items_with_spaces = [
+            "https://github.com/shadow-maint/shadow/releases/download/v${PV}/${BP}.tar.gz",
+            "${@bb.utils.contains('PACKAGECONFIG', 'pam', '${PAM_SRC_URI}', '', d)}",
+            "file://shadow-relaxed-usernames.patch",
+        ]
+        var_value = " ".join(items_with_spaces)
+        self.assertEqual(
+            bb.fetch2.trace.split_var_value(var_value, False), items_with_spaces)
+
+
+class GetUnexpSrcUriTest(unittest.TestCase):
+
+    def test_get_unexp_src_uri(self):
+        d = bb.data.init()
+        d.setVar("SRCBRANCH", "main")
+        d.setVar("SRC_URI", """
+            git://github.com/systemd/systemd-stable.git;protocol=https;branch=${SRCBRANCH}
+            file://0001-Adjust-for-musl-headers.patch
+        """)
+        src_uri = "git://github.com/systemd/systemd-stable.git;protocol=https;branch=main"
+        unexp_src_uri = "git://github.com/systemd/systemd-stable.git;protocol=https;branch=${SRCBRANCH}"
+        self.assertEqual(
+            bb.fetch2.trace.get_unexp_src_uri(src_uri, d), unexp_src_uri)
+
+    def test_get_unexp_src_uri_that_expands_to_multiple_items(self):
+        d = bb.data.init()
+        d.setVar("SRC_URI_MUSL", """
+            file://0003-missing_type.h-add-comparison_fn_t.patch
+            file://0004-add-fallback-parse_printf_format-implementation.patch
+            file://0005-src-basic-missing.h-check-for-missing-strndupa.patch
+        """)
+        d.setVar("SRC_URI", """
+            git://github.com/systemd/systemd-stable.git;protocol=https;branch=main
+            ${SRC_URI_MUSL}
+            file://0001-Adjust-for-musl-headers.patch
+        """)
+        src_uris = [
+            "file://0003-missing_type.h-add-comparison_fn_t.patch",
+            "file://0004-add-fallback-parse_printf_format-implementation.patch",
+            "file://0005-src-basic-missing.h-check-for-missing-strndupa.patch",
+        ]
+        unexp_src_uri = "${SRC_URI_MUSL}"
+        for src_uri in src_uris:
+            self.assertEqual(
+                bb.fetch2.trace.get_unexp_src_uri(src_uri, d), unexp_src_uri)
+
+
+class GetCleanSrcUriTest(unittest.TestCase):
+
+    def test_get_clean_src_uri_from_src_uri_with_abs_path_in_param(self):
+        src_uris = {
+            "git://git.example.com/foo/foo-plugin1.git;destsuffix=/home/user/poky/build/tmp/work/core2-64-poky-linux/foo/0.0.1/foo-0.0.1/plugins/1;name=plugin1;protocol=https" :
+                "git://git.example.com/foo/foo-plugin1.git;destsuffix=<local-path>;name=plugin1;protocol=https",
+            "git://git.example.com/foo/foo-plugin1.git;name=plugin1;protocol=https;destsuffix=/home/user/poky/build/tmp/work/core2-64-poky-linux/foo/0.0.1/foo-0.0.1/plugins/1" :
+                "git://git.example.com/foo/foo-plugin1.git;name=plugin1;protocol=https;destsuffix=<local-path>"
+        }
+        for src_uri, clean_src_uri in src_uris.items():
+            self.assertEqual(
+                bb.fetch2.trace.get_clean_src_uri(src_uri), clean_src_uri)
+
+    def test_get_clean_src_uri_from_src_uri_with_abs_path_in_url_path(self):
+        src_uris = {
+            "file:///home/user/meta-foo/foo/foo_fix.patch;subdir=foo":
+                "file://<local-path>;subdir=foo",
+            "npmsw:///home/user/meta-example/npm-shrinkwrap.json":
+                "npmsw://<local-path>"
+        }
+        for src_uri, clean_src_uri in src_uris.items():
+            self.assertEqual(
+                bb.fetch2.trace.get_clean_src_uri(src_uri), clean_src_uri)
+
+class GetDownloadLocationAndRelpathTest(unittest.TestCase):
+
+    # TODO add test with a git remote pointing to repo tool manifest
+
+    def test_get_dl_loc_for_dir_in_git_repo(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            tmpdir = Path(tmpdir)
+
+            create_file(tmpdir / "repo/README", "hello")
+            create_file(tmpdir / "repo/doc/help.txt", "help")
+            git_dir = tmpdir/"repo"
+            subprocess.check_output(["git", "init"], cwd=git_dir)
+            subprocess.check_output(["git", "add", "-A"], cwd=git_dir)
+            subprocess.check_output(["git", "commit", "-m", "'initial commit'"], cwd=git_dir)
+            head = subprocess.check_output(["git", "rev-parse", "HEAD"], cwd=git_dir).decode().strip("\n")
+            download_location, relpath = bb.fetch2.trace.get_dl_loc(tmpdir/"repo/doc")
+            self.assertEqual((download_location, relpath), (None, None)) # no origin
+
+            os.rename(tmpdir/"repo/.git", tmpdir/"repo.git")
+            subprocess.check_output(["rm", "-Rf", "repo"], cwd=tmpdir)
+            subprocess.check_output(["git", "clone", "repo.git"], cwd=tmpdir, stderr=subprocess.DEVNULL)
+            download_location, relpath = bb.fetch2.trace.get_dl_loc(tmpdir/"repo/doc")
+            self.assertEqual(download_location, "git+%s@%s" % (tmpdir/"repo.git", head))
+            self.assertEqual(relpath, "doc")
+
+            download_location, relpath = bb.fetch2.trace.get_dl_loc(git_dir)
+            self.assertEqual(download_location, "git+%s@%s" % (tmpdir/"repo.git", head))
+            self.assertEqual(relpath, "")
+
+            create_file(tmpdir/"repo/LICENSE", "CC-0")
+            subprocess.check_output(["git", "add", "LICENSE"], cwd=git_dir)
+            subprocess.check_output(["git", "commit", "-m", "'add license'"], cwd=git_dir)
+            download_location, relpath = bb.fetch2.trace.get_dl_loc(git_dir)
+            self.assertEqual((download_location, relpath), (None, None))
+
+    def test_get_dl_loc_on_file_with_no_git_repo(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            tmpdir = Path(tmpdir)
+            create_file(tmpdir/"README", "hello")
+            download_location, relpath = bb.fetch2.trace.get_dl_loc(tmpdir)
+            self.assertEqual((download_location, relpath), (None, None))
+
+
+class IsInCurrentBranchTest(unittest.TestCase):
+
+    def get_untracked_new_and_modified_files(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            tmpdir = Path(tmpdir)
+            create_file(tmpdir / "repo/README", "hello")
+            create_file(tmpdir / "repo/doc/help.txt", "help")
+            git_dir = tmpdir/"repo"
+            subprocess.check_output(["git", "init"], cwd=git_dir)
+            subprocess.check_output(["git", "add", "-A"], cwd=git_dir)
+            subprocess.check_output(["git", "commit", "-m", "'initial commit'"], cwd=git_dir)
+
+            # modified
+            create_file(tmpdir / "repo/README", "hello there")
+            # untracked
+            create_file(tmpdir / "repo/test/test.txt", "test")
+            # staged, uncommitted
+            create_file(tmpdir / "repo/test/test2.txt", "test2")
+            subprocess.check_output(["git", "add", "test/test2.txt"], cwd=git_dir)
+
+            untracked_new_and_modified_files = bb.fetch2.trace.get_get_untracked_new_and_modified_files(git_dir)
+
+            self.assertFalse("doc/help.txt" in untracked_new_and_modified_files)
+            self.assertTrue("README" in untracked_new_and_modified_files)
+            self.assertTrue("test/test.txt" in untracked_new_and_modified_files)
+            self.assertTrue("test/test2.txt" in untracked_new_and_modified_files)
+
+
+class TraceUnpackIntegrationTest(unittest.TestCase):
+
+    meta_repos = [(
+        "git://git.yoctoproject.org/poky",
+        "langdale",
+        "yocto-4.1.3",
+        "2023-03-05"
+    ),(
+        "git://git.openembedded.org/meta-openembedded",
+        "langdale",
+        "b5b732876da1885ecbab2aa45f80d7a3086c5262",
+        ""
+    )]
+
+    @classmethod
+    @skipIfNoNetwork()
+    def setUpClass(cls):
+        cls.meta_tempdir = tempfile.mkdtemp(prefix="meta-")
+        for repo, branch, commit, shallow_since in cls.meta_repos:
+            cmd = "git clone"
+            if shallow_since:
+                cmd += " --shallow-since %s" % shallow_since
+            cmd += " --branch %s --single-branch %s" % (branch, repo)
+            bb.process.run(cmd, cwd=cls.meta_tempdir)
+            basename = re.sub(r"\.git$", "", os.path.basename(repo))
+            git_dir = os.path.join(cls.meta_tempdir, basename)
+            bb.process.run("git checkout %s" % commit, cwd=git_dir)
+        cls.tempdir = tempfile.mkdtemp(prefix="bitbake-trace-")
+        cls.dldir = os.path.join(cls.tempdir, "download")
+        os.mkdir(cls.dldir)
+
+    @classmethod
+    @skipIfNoNetwork()
+    def tearDownClass(cls):
+        if os.environ.get("BB_TMPDIR_NOCLEAN") == "yes":
+            print("Not cleaning up %s. Please remove manually." % cls.meta_tempdir)
+            print("Not cleaning up %s. Please remove manually." % cls.tempdir)
+        else:
+            bb.process.run('chmod u+rw -R %s' % cls.meta_tempdir)
+            bb.utils.prunedir(cls.meta_tempdir)
+            bb.process.run('chmod u+rw -R %s' % cls.tempdir)
+            bb.utils.prunedir(cls.tempdir)
+
+    def run_do_unpack(self, var, var_flags, is_go=False):
+        self.d = bb.data.init()
+        self.d.setVar("DL_DIR", self.dldir)
+        for var_name, value in var.items():
+            self.d.setVar(var_name, value)
+        for var_name, flags in var_flags.items():
+            for flag_name, flag_value in flags.items():
+                self.d.setVarFlag(var_name, flag_name, flag_value)
+        bb.utils.mkdirhier(self.d.getVar("S"))
+        bb.utils.mkdirhier(self.d.getVar("WORKDIR") + "/temp")
+        fetcher = bb.fetch2.Fetch(None, self.d)
+        fetcher.download()
+        if is_go: # simulate go_do_unpack
+            for url in fetcher.urls:
+                if fetcher.ud[url].type == 'git':
+                    if fetcher.ud[url].parm.get('destsuffix') is None:
+                        s_dirname = os.path.basename(self.d.getVar('S'))
+                        fetcher.ud[url].parm['destsuffix'] = os.path.join(
+                            s_dirname, 'src', self.d.getVar('GO_IMPORT')) + '/'
+        fetcher.unpack(self.d.getVar("WORKDIR"))
+
+    def get_trace_data_and_expected_trace_data(self):
+        json_file = "%s-%s.unpack.trace.json.zst" % (self.d.getVar("PN"), self.d.getVar("PV"))
+        path = os.path.join(self.d.getVar("WORKDIR"), "temp", json_file)
+        with bb.compress.zstd.open(path, "rt", encoding="utf-8", num_threads=1) as f:
+            td = json.load(f)
+        this_dir = os.path.dirname(os.path.abspath(__file__))
+        testdata_path =  os.path.join(this_dir, "trace-testdata", json_file)
+        with bb.compress.zstd.open(testdata_path, "rt", encoding="utf-8", num_threads=1) as f:
+            expected_td = json.load(f)
+        return td, expected_td
+
+    @skipIfNoNetwork()
+    def test_bzip2_case(self):
+        """ 1) check if https, git and file src uris are correctly traced
+            2) local files configure.ac and Makefile.am from poky/meta layer are
+               added to bzip2 source dir (${WORKDIR}/bzip2-1.0.8/) through
+               file:// src uris with subdir param: check if their real upstream
+               source is correctly identified
+            3) SRC_URI contains variables to be expanded: check if the
+               unexpanded src uris are correctly identified
+        """
+        var = {
+            "PN": "bzip2",
+            "BPN": "bzip2",
+            "PV": "1.0.8",
+            "BP": "${BPN}-${PV}",
+            "SRC_URI":  """https://sourceware.org/pub/${BPN}/${BPN}-${PV}.tar.gz
+                           git://sourceware.org/git/bzip2-tests.git;name=bzip2-tests;branch=master
+                           file://configure.ac;subdir=${BP}
+                           file://Makefile.am;subdir=${BP}
+                           file://run-ptest
+                        """,
+            "SRCREV_bzip2-tests": "f9061c030a25de5b6829e1abf373057309c734c0",
+            "FILE": self.meta_tempdir+"/poky/meta/recipes-extended/bzip2/bzip2_1.0.8.bb",
+            "FILE_DIRNAME": "${@os.path.dirname(d.getVar('FILE', False))}",
+            "FILESPATH": '${FILE_DIRNAME}/${BP}:${FILE_DIRNAME}/${BPN}:${FILE_DIRNAME}/files',
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/${BP}",
+            "BBLAYERS": self.meta_tempdir+"/poky/meta",
+        }
+        var_flags = {
+            "SRC_URI": {
+                "md5sum": "67e051268d0c475ea773822f7500d0e5",
+                "sha256sum": "ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269"
+            }
+        }
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_gettext_minimal_native_case(self):
+        """ check if file src uri pointing to a directory (aclocal/) is
+            correctly handled"""
+        var = {
+            "PN": "gettext-minimal-native",
+            "PV": "0.21",
+            "BPN": "gettext-minimal",
+            "BP": "${BPN}-${PV}",
+            "SRC_URI": """file://aclocal/
+                          file://config.rpath
+                          file://Makefile.in.in
+                          file://remove-potcdate.sin
+                          file://COPYING
+                       """,
+            "FILE": self.meta_tempdir+"/poky/meta/recipes-core/gettext/gettext-minimal-native_0.21.1.bb",
+            "FILE_DIRNAME": "${@os.path.dirname(d.getVar('FILE', False))}",
+            "FILESPATH": '${FILE_DIRNAME}/${BP}:${FILE_DIRNAME}/${BPN}:${FILE_DIRNAME}/files',
+            "WORKDIR": self.tempdir+"/work/x86_64-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}",
+            "BBLAYERS": self.meta_tempdir+"/poky/meta",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_python_cryptography_case(self):
+        """ 1) check if crate:// src_uris are handled correctly (download
+               location should be the corresponding https download url)
+            2) check if package checksum data is handled correctly (we have
+               multiple SRC_URI entries supporting checksums here, but the
+               checksum var flag set in the recipe refers only to the first
+               found entry)
+        """
+        var = {
+            "PN": "python3-cryptography",
+            "PV": "37.0.4",
+            "BPN": "python3-cryptography",
+            "BP": "${BPN}-${PV}",
+            "PYPI_SRC_URI": "https://files.pythonhosted.org/packages/source/c/cryptography/cryptography-37.0.4.tar.gz",
+            "SRC_URI": """
+                ${PYPI_SRC_URI}
+                file://run-ptest
+                file://check-memfree.py
+                file://0001-Cargo.toml-specify-pem-version.patch
+                file://0002-Cargo.toml-edition-2018-2021.patch
+                file://0001-pyproject.toml-remove-benchmark-disable-option.patch
+                crate://crates.io/Inflector/0.11.4
+                crate://crates.io/aliasable/0.1.3
+                crate://crates.io/asn1/0.8.7
+                crate://crates.io/asn1_derive/0.8.7
+                crate://crates.io/autocfg/1.1.0
+                crate://crates.io/base64/0.13.0
+                crate://crates.io/bitflags/1.3.2
+                crate://crates.io/cfg-if/1.0.0
+                crate://crates.io/chrono/0.4.19
+                crate://crates.io/indoc-impl/0.3.6
+                crate://crates.io/indoc/0.3.6
+                crate://crates.io/instant/0.1.12
+                crate://crates.io/lazy_static/1.4.0
+                crate://crates.io/libc/0.2.124
+                crate://crates.io/lock_api/0.4.7
+                crate://crates.io/num-integer/0.1.44
+                crate://crates.io/num-traits/0.2.14
+                crate://crates.io/once_cell/1.10.0
+                crate://crates.io/ouroboros/0.15.0
+                crate://crates.io/ouroboros_macro/0.15.0
+                crate://crates.io/parking_lot/0.11.2
+                crate://crates.io/parking_lot_core/0.8.5
+                crate://crates.io/paste-impl/0.1.18
+                crate://crates.io/paste/0.1.18
+                crate://crates.io/pem/1.0.2
+                crate://crates.io/proc-macro-error-attr/1.0.4
+                crate://crates.io/proc-macro-error/1.0.4
+                crate://crates.io/proc-macro-hack/0.5.19
+                crate://crates.io/proc-macro2/1.0.37
+                crate://crates.io/pyo3-build-config/0.15.2
+                crate://crates.io/pyo3-macros-backend/0.15.2
+                crate://crates.io/pyo3-macros/0.15.2
+                crate://crates.io/pyo3/0.15.2
+                crate://crates.io/quote/1.0.18
+                crate://crates.io/redox_syscall/0.2.13
+                crate://crates.io/scopeguard/1.1.0
+                crate://crates.io/smallvec/1.8.0
+                crate://crates.io/stable_deref_trait/1.2.0
+                crate://crates.io/syn/1.0.91
+                crate://crates.io/unicode-xid/0.2.2
+                crate://crates.io/unindent/0.1.8
+                crate://crates.io/version_check/0.9.4
+                crate://crates.io/winapi-i686-pc-windows-gnu/0.4.0
+                crate://crates.io/winapi-x86_64-pc-windows-gnu/0.4.0
+                crate://crates.io/winapi/0.3.9
+            """,
+            "FILE": self.meta_tempdir+"/poky/meta/recipes-devtools/python/python3-cryptography_37.0.4.bb",
+            "FILE_DIRNAME": "${@os.path.dirname(d.getVar('FILE', False))}",
+            "FILESPATH": '${FILE_DIRNAME}/${BP}:${FILE_DIRNAME}/${BPN}:${FILE_DIRNAME}/files',
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/${BP}",
+            "BBLAYERS": self.meta_tempdir+"/poky/meta",
+        }
+        var_flags = {
+            "SRC_URI": {
+                "sha256sum": "63f9c17c0e2474ccbebc9302ce2f07b55b3b3fcb211ded18a42d5764f5c10a82",
+            }
+        }
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_snappy_case(self):
+        """check if gitsm src uri is handled correctly"""
+        var = {
+            "PN": "snappy",
+            "PV": "1.1.9",
+            "BPN": "snappy",
+            "BP": "${BPN}-${PV}",
+            "SRC_URI": """
+                gitsm://github.com/google/snappy.git;protocol=https;branch=main
+                file://0001-Add-inline-with-SNAPPY_ATTRIBUTE_ALWAYS_INLINE.patch
+            """,
+            "SRCREV": "2b63814b15a2aaae54b7943f0cd935892fae628f",
+            "FILE": self.meta_tempdir+"/meta-openembedded/meta-oe/recipes-extended/snappy/snappy_1.1.9.bb",
+            "FILE_DIRNAME": "${@os.path.dirname(d.getVar('FILE', False))}",
+            "FILESPATH": '${FILE_DIRNAME}/${BP}:${FILE_DIRNAME}/${BPN}:${FILE_DIRNAME}/files',
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/git",
+            "BBLAYERS": self.meta_tempdir+"/meta-openembedded/meta-oe",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_ot_br_posix_case(self):
+        """check if nested git submodules are handled correctly"""
+        var = {
+            "PN": "ot-br-posix",
+            "PV": "0.3.0+git083fb6921903441bf44f46c263c123eb4af6e4a9",
+            "BPN": "ot-br-posix",
+            "BP": "${BPN}-${PV}",
+            "SRC_URI": "gitsm://github.com/openthread/ot-br-posix.git;protocol=https;branch=main",
+            "SRCREV": "083fb6921903441bf44f46c263c123eb4af6e4a9",
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/git",
+            "BBLAYERS": self.meta_tempdir+"/meta-openembedded/meta-networking",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_gosu_case(self):
+        """ 1) test if src uris pointing to go code are handled correctly
+               (mocking go_do_unpack)
+            2) test if SRC_URI entries with local absolute path destsuffix param
+               are handled correctly
+            3) test if symlinks in sources are handled correctly
+        """
+        var =  {
+            "PN": "gosu",
+            "PV": "1.14",
+            "BPN": "gosu",
+            "BP": "${BPN}-${PV}",
+            "FILE": self.meta_tempdir+"/meta-openembedded/meta-oe/recipes-support/gosu/gosu_1.14.bb",
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/${BP}",
+            "GO_IMPORT": "github.com/tianon/gosu",
+            "SRC_URI": """
+                git://${GO_IMPORT}.git;branch=master;protocol=https
+                git://github.com/opencontainers/runc;name=runc;destsuffix=${S}/src/github.com/opencontainers/runc;branch=main;protocol=https
+            """,
+            "SRCREV": "9f7cd138a1ebc0684d43ef6046bf723978e8741f",
+            "SRCREV_runc": "d7f7b22a85a2387557bdcda125710c2506f8d5c5",
+            "BBLAYERS": self.meta_tempdir+"/meta-openembedded/meta-oe",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags, is_go=True)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_systemd_case(self):
+        """check if SRC_URI containing expressions are handled correctly"""
+        var = {
+            "PN": "systemd",
+            "PV": "251.8",
+            "BPN": "systemd",
+            "BP": "${BPN}-${PV}",
+            "SRCBRANCH": "v251-stable",
+            "SRCREV": "ae8b249af4acb055f920134f2ac584c4cbc86e3b",
+            "SRC_URI": """
+                git://github.com/systemd/systemd-stable.git;protocol=https;branch=${SRCBRANCH}
+                file://touchscreen.rules
+                file://00-create-volatile.conf
+                ${@bb.utils.contains('PACKAGECONFIG', 'polkit_hostnamed_fallback', 'file://org.freedesktop.hostname1_no_polkit.conf', '', d)}
+                ${@bb.utils.contains('PACKAGECONFIG', 'polkit_hostnamed_fallback', 'file://00-hostnamed-network-user.conf', '', d)}
+                file://init
+                file://99-default.preset
+                file://systemd-pager.sh
+                file://0001-binfmt-Don-t-install-dependency-links-at-install-tim.patch
+                file://0003-implment-systemd-sysv-install-for-OE.patch
+                file://0001-Move-sysusers.d-sysctl.d-binfmt.d-modules-load.d-to-.patch
+            """,
+            "FILE": self.meta_tempdir+"/poky/meta/recipes-core/systemd/systemd_251.8.bb",
+            "FILE_DIRNAME": "${@os.path.dirname(d.getVar('FILE', False))}",
+            "FILESPATH": '${FILE_DIRNAME}/${BP}:${FILE_DIRNAME}/${BPN}:${FILE_DIRNAME}/files',
+            "WORKDIR": self.tempdir+"/work/core2-64-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/git",
+            "BBLAYERS": self.meta_tempdir+"/poky/meta",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+    @skipIfNoNetwork()
+    def test_npmsw(self):
+        """ 1) test npmsw fetcher using a small made-up npm-shrinkwrap.json
+               file; check if nested non-dedup dependencies are handled
+               correctly (some upstream files are replicated in multiple
+               paths in workdir); check if "git" package versions are
+               handled correctly
+            2) test if files added to existing layer local repos are handled
+               correctly (finding local provenance and not upstream provenance)
+        """
+        this_dir = os.path.dirname(os.path.abspath(__file__))
+        npmsw_file = this_dir+"/trace-testdata/npm-shrinkwrap-test.json"
+        shutil.copy2(npmsw_file, self.meta_tempdir+"/poky/meta")
+        var = {
+            "PN": "test_npm",
+            "PV": "1.0.0",
+            "BPN": "test_npm",
+            "BP": "${BPN}-${PV}",
+            "NPMSW_PATH": self.meta_tempdir+"/poky/meta",
+            "SRC_URI": "npmsw://${NPMSW_PATH}/npm-shrinkwrap-test.json",
+            "WORKDIR": self.tempdir+"/work/all-poky-linux/${PN}/${PV}-r0",
+            "S": "${WORKDIR}/${BP}",
+            "BBLAYERS": self.meta_tempdir+"/poky/meta",
+        }
+        var_flags = {}
+        self.run_do_unpack(var, var_flags)
+        td, expected_td =  self.get_trace_data_and_expected_trace_data()
+        self.assertEqual(td, expected_td)
+
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file