Increase code coverage

Add any additional U+FE0F/U+FE0E check in sequence of wcswidth() to
ensure 100% code coverage

Author: jquast

tests/test_emojis.py

@@ -233,10 +233,12 @@ def test_recommended_variation_15_sequences():
 def test_unicode_9_vs16():
     """Verify effect of VS-16 on unicode_version 9.0 and later"""
     phrase = ("\u2640"        # FEMALE SIGN
+              "\uFE0F"        # VARIATION SELECTOR-16
+              "X"             # ASCII Letter 'X'
               "\uFE0F")       # VARIATION SELECTOR-16
 
-    expect_length_each = (1, 0)
-    expect_length_phrase = 2
+    expect_length_each = (1, 0, 1, 0)
+    expect_length_phrase = 3
 
     # exercise,
     length_each = tuple(wcwidth.wcwidth(w_char, unicode_version='9.0') for w_char in phrase)
@@ -250,10 +252,12 @@ def test_unicode_9_vs16():
 def test_unicode_9_vs15():
     """Verify effect of VS-15 on unicode_version 9.0 and later"""
     phrase = ("\U0001f4da"        # BOOKS
+              "\uFE0E"            # VARIATION SELECTOR-15
+              "X"                 # ASCII Letter 'X'
               "\uFE0E")           # VARIATION SELECTOR-15
 
-    expect_length_each = (2, 0)
-    expect_length_phrase = 1
+    expect_length_each = (2, 0, 1, 0)
+    expect_length_phrase = 2
 
     # exercise,
     length_each = tuple(wcwidth.wcwidth(w_char, unicode_version='9.0') for w_char in phrase)
@@ -267,10 +271,12 @@ def test_unicode_9_vs15():
 def test_unicode_8_vs16():
     """Verify that VS-16 has no effect on unicode_version 8.0 and earlier"""
     phrase = ("\u2640"        # FEMALE SIGN
+              "\uFE0F"        # VARIATION SELECTOR-16
+              "X"             # ASCII Letter 'X'
               "\uFE0F")       # VARIATION SELECTOR-16
 
-    expect_length_each = (1, 0)
-    expect_length_phrase = 1
+    expect_length_each = (1, 0, 1, 0)
+    expect_length_phrase = 2
 
     # exercise,
     length_each = tuple(wcwidth.wcwidth(w_char, unicode_version='8.0') for w_char in phrase)
@@ -284,10 +290,12 @@ def test_unicode_8_vs16():
 def test_unicode_8_vs15():
     """Verify that VS-15 has no effect on unicode_version 8.0 and earlier"""
     phrase = ("\U0001f4da"        # BOOKS
+              "\uFE0E"            # VARIATION SELECTOR-15
+              "X"                 # ASCII Letter 'X'
               "\uFE0E")           # VARIATION SELECTOR-15
 
-    expect_length_each = (1, 0)
-    expect_length_phrase = 1
+    expect_length_each = (1, 0, 1, 0)
+    expect_length_phrase = 2
 
     # exercise,
     length_each = tuple(wcwidth.wcwidth(w_char, unicode_version='8.0') for w_char in phrase)