[geary/mjog/771-html-not-wrapped-on-send: 1/3] Geary.RFC822.Message: Work around long HTML lines exceeding SMTP max len

[Michael Gratton <mjog src gnome org>]

commit 42152d00baac8832308e29ec51bb864abcb696d5
Author: Michael Gratton <mike vee net>
Date:   Sun Mar 29 09:51:17 2020 +1100

    Geary.RFC822.Message: Work around long HTML lines exceeding SMTP max len

 test/engine/rfc822-message-test.vala | 58 ++++++++++++++++++++++++++++++++++--
 1 file changed, 56 insertions(+), 2 deletions(-)
---
diff --git a/test/engine/rfc822-message-test.vala b/test/engine/rfc822-message-test.vala
index 48b4bef0..c99865f9 100644
--- a/test/engine/rfc822-message-test.vala
+++ b/test/engine/rfc822-message-test.vala
@@ -57,9 +57,11 @@ This is the second line.
         add_test("get_recipients", get_recipients);
         add_test("get_searchable_body", get_searchable_body);
         add_test("get_searchable_recipients", get_searchable_recipients);
-        add_test("get_network_buffer", get_network_buffer);
         add_test("from_composed_email", from_composed_email);
         add_test("from_composed_email_inline_attachments", from_composed_email_inline_attachments);
+        add_test("get_network_buffer", get_network_buffer);
+        add_test("get_network_buffer_dot_stuff", get_network_buffer_dot_stuff);
+        add_test("get_network_buffer_long_ascii_line", get_network_buffer_long_ascii_line);
     }
 
     public void basic_message_from_buffer() throws Error {
@@ -210,10 +212,62 @@ This is the second line.
 
     public void get_network_buffer() throws Error {
         Message test = resource_to_message(BASIC_TEXT_PLAIN);
-        Memory.Buffer buffer =  test.get_network_buffer(true);
+        Memory.Buffer buffer = test.get_network_buffer(true);
         assert_true(buffer.to_string() == NETWORK_BUFFER_EXPECTED, "Network buffer differs");
     }
 
+    public void get_network_buffer_dot_stuff() throws GLib.Error {
+        RFC822.MailboxAddress to = new RFC822.MailboxAddress(
+            "Test", "test example com"
+        );
+        RFC822.MailboxAddress from = new RFC822.MailboxAddress(
+            "Sender", "sender example com"
+        );
+        Geary.ComposedEmail composed = new Geary.ComposedEmail(
+            new GLib.DateTime.now_local(),
+            new Geary.RFC822.MailboxAddresses.single(from)
+        ).set_to(new Geary.RFC822.MailboxAddresses.single(to));
+        composed.body_text = ".newline\n.\n";
+
+        this.message_from_composed_email.begin(
+            composed,
+            async_complete_full
+        );
+        Geary.RFC822.Message message = message_from_composed_email.end(async_result());
+
+        string message_data = message.get_network_buffer(true).to_string();
+        print("\n'%s'\n", message_data);
+        assert_true(message_data.has_suffix("..newline\r\n..\r\n"));
+    }
+
+    public void get_network_buffer_long_ascii_line() throws GLib.Error {
+        RFC822.MailboxAddress to = new RFC822.MailboxAddress(
+            "Test", "test example com"
+        );
+        RFC822.MailboxAddress from = new RFC822.MailboxAddress(
+            "Sender", "sender example com"
+        );
+        Geary.ComposedEmail composed = new Geary.ComposedEmail(
+            new GLib.DateTime.now_local(),
+            new Geary.RFC822.MailboxAddresses.single(from)
+        ).set_to(new Geary.RFC822.MailboxAddresses.single(to));
+        composed.body_text = """
+long long long long long long long long long long long long long long long long long
+""";
+        composed.body_html = "<p>%s<p>".printf(composed.body_text);
+
+        this.message_from_composed_email.begin(
+            composed,
+            async_complete_full
+        );
+        Geary.RFC822.Message message = message_from_composed_email.end(async_result());
+
+        string message_data = message.get_network_buffer(true).to_string();
+        foreach (var line in message_data.split("\n")) {
+            assert_true(line.length < 80, line);
+        }
+    }
+
     public void from_composed_email() throws GLib.Error {
         RFC822.MailboxAddress to = new RFC822.MailboxAddress(
             "Test", "test example com"