tests: add basic ECH tests

Test 4000 and 4001

Closes #17192

tests/data/Makefile.am

@@ -276,6 +276,8 @@ test3032 \
 test3100 test3101 test3102 test3103 test3104 test3105 \
 \
 test3200 test3201 test3202 test3203 test3204 test3205 test3207 test3208 \
-test3209 test3210 test3211 test3212 test3213
+test3209 test3210 test3211 test3212 test3213 \
+\
+test4000 test4001
 
 EXTRA_DIST = $(TESTCASES) DISABLED

tests/data/test4000

@@ -0,0 +1,51 @@
+<testcase>
+<info>
+<keywords>
+ECH GREASE
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Content-Length: 7
+
+MooMoo
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+ECH
+</features>
+<server>
+https
+</server>
+<name>
+HTTPS GET with ECH GREASE
+</name>
+# Using '-k' over '--insecure' to also test the short form
+# Add ECH grease
+<command>
+--ech grease -k https://%HOSTIP:%HTTPSPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET /%TESTNUMBER HTTP/1.1
+Host: %HOSTIP:%HTTPSPORT
+User-Agent: curl/%VERSION
+Accept: */*
+
+</protocol>
+</verify>
+</testcase>

tests/data/test4001

@@ -0,0 +1,46 @@
+<testcase>
+<info>
+<keywords>
+ECH try real and fail
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+ECH
+</features>
+<server>
+https
+</server>
+<name>
+Make real ECH attempt and fail with "ech required" error (101)
+</name>
+# Using '-k' over '--insecure' to also test the short form
+<command>
+--ech ecl:AEv+DQBHdAAgACCCU49qdxKOUXJPs3wlsM06v/t42sMH5xQOL37MAd3HaAAEAAEAAQAYb3RoZXJwdWJsaWMudGVzdC5kZWZvLmllAAA= -k https://%HOSTIP:%HTTPSPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<errorcode>
+%if !wolfssl
+%if !rustls
+101
+%else
+35
+%endif
+%else
+35
+%endif
+</errorcode>
+</verify>
+</testcase>