chore(webconnectivitylte): add large file test cases (#1475)

Close ooni/probe#1336

internal/experiment/webconnectivityqa/largefile.go

@@ -0,0 +1,47 @@
+package webconnectivityqa
+
+import "github.com/ooni/probe-cli/v3/internal/netemx"
+
+// largeFileWithHTTP is the case where we download a large file.
+func largeFileWithHTTP() *TestCase {
+	return &TestCase{
+		Name:  "largeFileWithHTTP",
+		Flags: TestCaseFlagNoV04,
+		Input: "http://largefile.com/",
+		Configure: func(env *netemx.QAEnv) {
+			// nothing
+		},
+		ExpectErr: false,
+		ExpectTestKeys: &testKeys{
+			DNSConsistency:  "consistent",
+			StatusCodeMatch: true,
+			HeadersMatch:    true,
+			TitleMatch:      true,
+			XBlockingFlags:  32, // AnalysisBlockingFlagSuccess
+			Accessible:      true,
+			Blocking:        false,
+		},
+	}
+}
+
+// largeFileWithHTTPS is the case where we download a large file.
+func largeFileWithHTTPS() *TestCase {
+	return &TestCase{
+		Name:  "largeFileWithHTTPS",
+		Flags: TestCaseFlagNoV04,
+		Input: "https://largefile.com/",
+		Configure: func(env *netemx.QAEnv) {
+			// nothing
+		},
+		ExpectErr: false,
+		ExpectTestKeys: &testKeys{
+			DNSConsistency:  "consistent",
+			StatusCodeMatch: true,
+			HeadersMatch:    true,
+			TitleMatch:      true,
+			XBlockingFlags:  32, // AnalysisBlockingFlagSuccess
+			Accessible:      true,
+			Blocking:        false,
+		},
+	}
+}

internal/experiment/webconnectivityqa/testcase.go

@@ -68,6 +68,9 @@ func AllTestCases() []*TestCase {
 		idnaWithoutCensorshipLowercase(),
 		idnaWithoutCensorshipWithFirstLetterUppercase(),
 
+		largeFileWithHTTP(),
+		largeFileWithHTTPS(),
+
 		localhostWithHTTP(),
 		localhostWithHTTPS(),