Description: Fix UnicodeDecodeError
Author: Ondřej Nový <onovy@debian.org>
Forwarded: https://review.openstack.org/#/c/516788

--- a/os_api_ref/tests/test_basic_example.py
+++ b/os_api_ref/tests/test_basic_example.py
@@ -38,7 +38,7 @@
         self.status = status
         self.warning = warning
         self.app.build()
-        self.html = (app.outdir / 'index.html').read_text()
+        self.html = (app.outdir / 'index.html').read_text(encoding='utf-8')
         self.soup = BeautifulSoup(self.html, 'html.parser')
         self.content = str(self.soup)
 
--- a/os_api_ref/tests/test_microversions.py
+++ b/os_api_ref/tests/test_microversions.py
@@ -38,7 +38,7 @@
         self.app.build()
         self.status = status.getvalue()
         self.warning = warning.getvalue()
-        self.html = (app.outdir / 'index.html').read_text()
+        self.html = (app.outdir / 'index.html').read_text(encoding='utf-8')
         self.soup = BeautifulSoup(self.html, 'html.parser')
         self.content = str(self.soup)
 
--- a/os_api_ref/tests/test_warnings.py
+++ b/os_api_ref/tests/test_warnings.py
@@ -38,7 +38,7 @@
         self.app.build()
         self.status = status.getvalue()
         self.warning = warning.getvalue()
-        self.html = (app.outdir / 'index.html').read_text()
+        self.html = (app.outdir / 'index.html').read_text(encoding='utf-8')
         self.soup = BeautifulSoup(self.html, 'html.parser')
         self.content = str(self.soup)