[PATCH] fetch2: allow empty value for params while formatting URI string.

While using PREMIRRORS to gets source code, recipe sbom-cve-check-update-nvd-native
do fetch failed:

$ bitbake sbom-cve-check-update-nvd-native  -cfetch -f
...
ERROR: sbom-cve-check-update-nvd-native-1.0-r0 do_fetch: Bitbake Fetcher Error: MalformedUrl('git:///path-to-premirror/git/github.com.fkie-cad.nvd-json-data-feeds.git;branch=main;protocol=file;destsuffix')
ERROR: Logfile of failure stored in: tmp/work/x86_64-linux/sbom-cve-check-update-nvd-native/1.0/temp/log.do_fetch.4135595
ERROR: Task (oe-core/meta/recipes-devtools/sbom-cve-check/sbom-cve-check-update-nvd-native.bb:do_fetch) failed with exit code '1'
...

In oe-core commit [1], destsuffix was configured to empty string through SRC_URI,
but in bitbake commit [2], it removed `=' from destsuffix in which value is empty,
and trigger MalformedUrl failure, see sbom-cve-check-update-nvd-native do_fetch log:

...log.do_fetch...
DEBUG: For url git://github.com/fkie-cad/nvd-json-data-feeds.git;branch=main;protocol=https;destsuffix= returning git:///path-to-premirror/git/github.com.fkie-cad.nvd-json-data-feeds.git;branch=main;protocol=file;destsuffix
...log.do_fetch...

This commit use function _query_str_join for query as usual (if a value is
None then it isn't a key-value pair, but a bare key.), and use function
_param_str_join for params to allow value is empty string and still key-value
pair, after applying this commit
...log.do_fetch...
DEBUG: For url git://github.com/fkie-cad/nvd-json-data-feeds.git;branch=main;protocol=https;destsuffix= returning git:///path-to-premirror/git/github.com.fkie-cad.nvd-json-data-feeds.git;branch=main;protocol=file;destsuffix=
...log.do_fetch...

$ bitbake-selftest -v bb.tests.fetch.URITest.test_uri
test_uri (bb.tests.fetch.URITest) ... ok

----------------------------------------------------------------------
Ran 1 test in 0.001s

OK

[1] https://github.com/openembedded/openembedded-core/commit/131e024a6688074347e08879718221fbfb69033f
[2] https://github.com/openembedded/bitbake/commit/eac583bd4c46f3bb9661852cb6a1448f16147ff1

Signed-off-by: Hongxu Jia <[email protected]>
---
 lib/bb/fetch2/__init__.py | 7 +++++--
 lib/bb/tests/fetch.py     | 6 +++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/lib/bb/fetch2/__init__.py b/lib/bb/fetch2/__init__.py
index 52d5556d3..603ed693c 100644
--- a/lib/bb/fetch2/__init__.py
+++ b/lib/bb/fetch2/__init__.py
@@ -303,7 +303,7 @@ class URI(object):
 
     def _query_str(self):
         return (
-            ''.join(['?', self._param_str_join(self.query, "&")])
+            ''.join(['?', self._query_str_join(self.query, "&")])
             if self.query else '')
 
     def _param_str_split(self, string, elmdelim, kvdelim="="):
@@ -312,9 +312,12 @@ class URI(object):
             ret[k] = v
         return ret
 
-    def _param_str_join(self, dict_, elmdelim, kvdelim="="):
+    def _query_str_join(self, dict_, elmdelim, kvdelim="="):
         return elmdelim.join([kvdelim.join([k, v]) if v else k for k, v in dict_.items()])
 
+    def _param_str_join(self, dict_, elmdelim, kvdelim="="):
+        return elmdelim.join([kvdelim.join([k, v]) for k, v in dict_.items()])
+
     @property
     def hostport(self):
         if not self.port:
diff --git a/lib/bb/tests/fetch.py b/lib/bb/tests/fetch.py
index 86dd92992..969e5f876 100644
--- a/lib/bb/tests/fetch.py
+++ b/lib/bb/tests/fetch.py
@@ -291,8 +291,8 @@ class URITest(unittest.TestCase):
             'query': {},
             'relative': True
         },
-        "https://www.innodisk.com/Download_file?9BE0BF6657;downloadfilename=EGPL-T101.zip": {
-            'uri': 'https://www.innodisk.com/Download_file?9BE0BF6657;downloadfilename=EGPL-T101.zip',
+        "https://www.innodisk.com/Download_file?9BE0BF6657;downloadfilename=EGPL-T101.zip;someparam=": {
+            'uri': 'https://www.innodisk.com/Download_file?9BE0BF6657;downloadfilename=EGPL-T101.zip;someparam=',
             'scheme': 'https',
             'hostname': 'www.innodisk.com',
             'port': None,
@@ -302,7 +302,7 @@ class URITest(unittest.TestCase):
             'userinfo': '',
             'username': '',
             'password': '',
-            'params': {"downloadfilename" : "EGPL-T101.zip"},
+            'params': {"downloadfilename" : "EGPL-T101.zip", "someparam" : ""},
             'query': {"9BE0BF6657": None},
             'relative': False
         },
-- 
2.34.1