203 lines
5.7 KiB
Python
203 lines
5.7 KiB
Python
# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and Contributors
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# License: MIT. See LICENSE
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import base64
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import os
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import frappe
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from frappe import safe_decode
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from frappe.email.doctype.email_queue.email_queue import QueueBuilder, SendMailContext
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from frappe.email.email_body import (
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get_email,
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get_header,
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inline_style_in_html,
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replace_filename_with_cid,
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)
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from frappe.email.receive import Email
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from frappe.tests.utils import FrappeTestCase
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class TestEmailBody(FrappeTestCase):
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def setUp(self):
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email_html = """
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<div>
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<h3>Hey John Doe!</h3>
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<p>This is embedded image you asked for</p>
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<img embed="assets/frappe/images/frappe-favicon.svg" />
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</div>
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"""
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email_text = """
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Hey John Doe!
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This is the text version of this email
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"""
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img_path = os.path.abspath("assets/frappe/images/frappe-favicon.svg")
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with open(img_path, "rb") as f:
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img_content = f.read()
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img_base64 = base64.b64encode(img_content).decode()
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# email body keeps 76 characters on one line
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self.img_base64 = fixed_column_width(img_base64, 76)
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self.email_string = (
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get_email(
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recipients=["test@example.com"],
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sender="me@example.com",
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subject="Test Subject",
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content=email_html,
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text_content=email_text,
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)
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.as_string()
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.replace("\r\n", "\n")
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)
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def test_prepare_message_returns_already_encoded_string(self):
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uni_chr1 = chr(40960)
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uni_chr2 = chr(1972)
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QueueBuilder(
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recipients=["test@example.com"],
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sender="me@example.com",
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subject="Test Subject",
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message=f"<h1>{uni_chr1}abcd{uni_chr2}</h1>",
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text_content="whatever",
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).process()
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queue_doc = frappe.get_last_doc("Email Queue")
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mail_ctx = SendMailContext(queue_doc=queue_doc)
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result = mail_ctx.build_message(recipient_email="test@test.com")
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self.assertTrue(b"<h1>=EA=80=80abcd=DE=B4</h1>" in result)
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def test_prepare_message_returns_cr_lf(self):
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QueueBuilder(
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recipients=["test@example.com"],
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sender="me@example.com",
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subject="Test Subject",
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message="<h1>\n this is a test of newlines\n" + "</h1>",
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text_content="whatever",
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).process()
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queue_doc = frappe.get_last_doc("Email Queue")
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mail_ctx = SendMailContext(queue_doc=queue_doc)
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result = safe_decode(mail_ctx.build_message(recipient_email="test@test.com"))
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self.assertTrue(result.count("\n") == result.count("\r"))
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def test_image(self):
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img_signature = """
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Content-Type: image/svg+xml
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MIME-Version: 1.0
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Content-Transfer-Encoding: base64
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Content-Disposition: inline; filename="frappe-favicon.svg"
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"""
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self.assertTrue(img_signature in self.email_string)
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self.assertTrue(self.img_base64 in self.email_string)
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def test_text_content(self):
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text_content = """
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Content-Type: text/plain; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: quoted-printable
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Hey John Doe!
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This is the text version of this email
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"""
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self.assertTrue(text_content in self.email_string)
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def test_email_content(self):
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html_head = """
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Content-Type: text/html; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: quoted-printable
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.=
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w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns=3D"http://www.w3.org/1999/xhtml">
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"""
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html = """<h3>Hey John Doe!</h3>"""
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self.assertTrue(html_head in self.email_string)
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self.assertTrue(html in self.email_string)
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def test_replace_filename_with_cid(self):
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original_message = """
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<div>
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<img embed="assets/frappe/images/frappe-favicon.svg" alt="test" />
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<img embed="notexists.jpg" />
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</div>
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"""
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message, inline_images = replace_filename_with_cid(original_message)
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processed_message = """
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<div>
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<img src="cid:{}" alt="test" />
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<img />
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</div>
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""".format(
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inline_images[0].get("content_id")
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)
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self.assertEqual(message, processed_message)
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def test_inline_styling(self):
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html = """
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<h3>Hi John</h3>
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<p>This is a test email</p>
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"""
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transformed_html = """
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<h3>Hi John</h3>
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<p style="margin:1em 0 !important">This is a test email</p>
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"""
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self.assertTrue(transformed_html in inline_style_in_html(html))
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def test_email_header(self):
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email_html = """
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<h3>Hey John Doe!</h3>
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<p>This is embedded image you asked for</p>
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"""
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email_string = get_email(
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recipients=["test@example.com"],
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sender="me@example.com",
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subject="Test Subject\u2028, with line break, \nand Line feed \rand carriage return.",
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content=email_html,
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header=["Email Title", "green"],
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).as_string()
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# REDESIGN-TODO: Add style for indicators in email
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self.assertTrue("""<span class=3D"indicator indicator-green"></span>""" in email_string)
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self.assertTrue("<span>Email Title</span>" in email_string)
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self.assertIn(
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"Subject: Test Subject, with line break, and Line feed and carriage return.", email_string
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)
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def test_get_email_header(self):
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html = get_header(["This is test", "orange"])
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self.assertTrue('<span class="indicator indicator-orange"></span>' in html)
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self.assertTrue("<span>This is test</span>" in html)
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html = get_header(["This is another test"])
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self.assertTrue("<span>This is another test</span>" in html)
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html = get_header("This is string")
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self.assertTrue("<span>This is string</span>" in html)
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def test_8bit_utf_8_decoding(self):
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text_content_bytes = b"\xed\x95\x9c\xea\xb8\x80\xe1\xa5\xa1\xe2\x95\xa5\xe0\xba\xaa\xe0\xa4\x8f"
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text_content = text_content_bytes.decode("utf-8")
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content_bytes = (
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b"""MIME-Version: 1.0
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Content-Type: text/plain; charset=utf-8
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Content-Disposition: inline
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Content-Transfer-Encoding: 8bit
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From: test1_@erpnext.com
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Reply-To: test2_@erpnext.com
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"""
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+ text_content_bytes
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)
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mail = Email(content_bytes)
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self.assertEqual(mail.text_content, text_content)
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def fixed_column_width(string, chunk_size):
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parts = [string[0 + i : chunk_size + i] for i in range(0, len(string), chunk_size)]
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return "\n".join(parts)
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