rfctr(auto): improve expression in tests (#3384)

**Summary**
In preparation for further work on auto-partitioning, improve the
expression in the test-suite.

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.15.0-dev7
+## 0.15.0-dev8
 
 ### Enhancements
 

example-docs/fake-email.eml

@@ -0,0 +1,24 @@
+MIME-Version: 1.0
+Date: Fri, 16 Dec 2022 17:04:16 -0500
+Message-ID: <CADc-_xaLB2FeVQ7mNsoX+NJb_7hAJhBKa_zet-rtgPGenj0uVw@mail.gmail.com>
+Subject: Test Email
+From: Matthew Robinson <mrobinson@unstructured.io>
+To: NotMatthew <NotMatthew@notunstructured.com>
+Content-Type: multipart/alternative; boundary="00000000000095c9b205eff92630"
+
+--00000000000095c9b205eff92630
+Content-Type: text/plain; charset="UTF-8"
+
+This is a test email to use for unit tests.
+
+Important points:
+
+   - Roses are red
+   - Violets are blue
+
+--00000000000095c9b205eff92630
+Content-Type: text/html; charset="UTF-8"
+
+<div dir="ltr"><div>This is a test email to use for unit tests.</div><div><br></div><div>Important points:</div><div><ul><li>Roses are red</li><li>Violets are blue</li></ul></div></div>
+
+--00000000000095c9b205eff92630--

test_unstructured/partition/test_constants.py

@@ -137,3 +137,88 @@ EXPECTED_TABLE_WITH_EMOJI = """<table border="1" class="dataframe">
     </tr>
   </tbody>
 </table>"""
+
+EXPECTED_XLS_TABLE = (
+    """<table border="1" class="dataframe">
+  <tbody>
+    <tr>
+      <td>MC</td>
+      <td>What is 2+2?</td>
+      <td>4</td>
+      <td>correct</td>
+      <td>3</td>
+      <td>incorrect</td>
+      <td></td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>MA</td>
+      <td>What C datatypes are 8 bits? (assume i386)</td>
+      <td>int</td>
+      <td></td>
+      <td>float</td>
+      <td></td>
+      <td>double</td>
+      <td></td>
+      <td>char</td>
+    </tr>
+    <tr>
+      <td>TF</td>
+      <td>Bagpipes are awesome.</td>
+      <td>true</td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>ESS</td>
+      <td>How have the original Henry Hornbostel buildings """
+    """influenced campus architecture and design in the last 30 years?</td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>ORD</td>
+      <td>Rank the following in their order of operation.</td>
+      <td>Parentheses</td>
+      <td>Exponents</td>
+      <td>Division</td>
+      <td>Addition</td>
+      <td></td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>FIB</td>
+      <td>The student activities fee is</td>
+      <td>95</td>
+      <td>dollars for students enrolled in</td>
+      <td>19</td>
+      <td>units or more,</td>
+      <td></td>
+      <td></td>
+      <td></td>
+    </tr>
+    <tr>
+      <td>MAT</td>
+      <td>Match the lower-case greek letter with its capital form.</td>
+      <td>λ</td>
+      <td>Λ</td>
+      <td>α</td>
+      <td>γ</td>
+      <td>Γ</td>
+      <td>φ</td>
+      <td>Φ</td>
+    </tr>
+  </tbody>
+</table>"""
+)

unstructured/__version__.py

@@ -1 +1 @@
-__version__ = "0.15.0-dev7"  # pragma: no cover
+__version__ = "0.15.0-dev8"  # pragma: no cover