Implement nixos-modules/static-page test

nixos-modules/static-page/test.py

@@ -0,0 +1,46 @@
+def test(subtest, webserver):
+    webserver.wait_for_unit("nginx")
+    webserver.wait_for_open_port(80)
+
+    # Preparations
+    webserverRoot = "/var/lib/nginx-localhost/root"
+    indexContent = "It works!"
+    webserver.succeed(f"mkdir {webserverRoot}")
+    webserver.succeed(f"echo '{indexContent}' > {webserverRoot}/index.html")
+    webserver.succeed(f"chown -R nginx-localhost\: {webserverRoot}")
+
+    # Helpers
+    def curl_variable_test(node, variable, expected, url):
+        value = node.succeed(
+            f"curl -s --no-location -o /dev/null -w '%{{{variable}}}' '{url}'")
+        assert value == expected, \
+            f"expected {variable} to be '{expected}' but got '{value}'"
+
+    def expect_http_code(node, code, url):
+        curl_variable_test(node, "http_code", code, url)
+
+    def expect_http_location(node, location, url):
+        curl_variable_test(node, "redirect_url", location, url)
+
+    def expect_http_content(node, expectedContent, url):
+        content = node.succeed(f"curl --no-location --silent '{url}'")
+        assert content.strip() == expectedContent.strip(), f'''
+                expected content:
+                  {expectedContent}
+                at {url} but got following content:
+                  {content}
+            '''
+
+    # Tests
+    with subtest("website is successfully served on localhost"):
+        expect_http_code(webserver, "200", "http://localhost/index.html")
+        expect_http_content(webserver, indexContent,
+                            "http://localhost/index.html")
+
+    with subtest("example.com is in hosts file and a redirect to localhost"):
+        webserver.succeed("grep example.com /etc/hosts")
+
+        url = "http://example.com/index.html"
+        expect_http_code(webserver, "301", url)
+        expect_http_location(
+            webserver, "http://localhost/index.html", url)