From 92ab95f21539d94c2139974b3995699a155f5a97 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Thu, 29 Jan 2015 14:56:09 +0000
Subject: [PATCH] tests: Add some tests to improve coverage.

---
 tests/basics/builtin_ellipsis.py |  6 ++++++
 tests/basics/fun_largestate.py   | 26 ++++++++++++++++++++++++--
 tests/basics/list_slice.py       |  4 ++++
 tests/io/file_readline.py        |  6 ++++++
 tests/unicode/data/utf-8_2.txt   |  1 +
 tests/unicode/file2.py           | 10 ++++++++++
 6 files changed, 51 insertions(+), 2 deletions(-)
 create mode 100644 tests/basics/builtin_ellipsis.py
 create mode 100644 tests/io/file_readline.py

diff --git a/tests/basics/builtin_ellipsis.py b/tests/basics/builtin_ellipsis.py
new file mode 100644
index 0000000000..d88647a89a
--- /dev/null
+++ b/tests/basics/builtin_ellipsis.py
@@ -0,0 +1,6 @@
+# tests that .../Ellipsis exists
+
+print(...)
+print(Ellipsis)
+
+print(... == Ellipsis)
diff --git a/tests/basics/fun_largestate.py b/tests/basics/fun_largestate.py
index f13619295f..124f1e506f 100644
--- a/tests/basics/fun_largestate.py
+++ b/tests/basics/fun_largestate.py
@@ -1,5 +1,6 @@
 # test large function (stack) state
 
+# this function creates 127 locals
 def f():
     x0 = 1
     x1 = 1
@@ -128,10 +129,31 @@ def f():
     x124 = 1
     x125 = 1
     x126 = 1
-
 f()
 
+# this function pushes 128 elements onto the function stack
 def g():
     x = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,]
-
 g()
+
+# this function exercises load_fast_n and store_fast_n opcodes
+def h():
+    x0 = 1
+    x1 = x0
+    x2 = x1
+    x3 = x2
+    x4 = x3
+    x5 = x4
+    x6 = x5
+    x7 = x6
+    x8 = x7
+    x9 = x8
+    x10 = x9
+    x11 = x10
+    x12 = x11
+    x13 = x12
+    x14 = x13
+    x15 = x14
+    x16 = x15
+    x17 = x16
+h()
diff --git a/tests/basics/list_slice.py b/tests/basics/list_slice.py
index a9962132e2..3a9a1e05e6 100644
--- a/tests/basics/list_slice.py
+++ b/tests/basics/list_slice.py
@@ -16,3 +16,7 @@ print(x[a::])
 print(x[a:b])
 print(x[a:b:])
 #print(x[a:b:c])
+
+# these should not raise IndexError
+print([][1:])
+print([][-1:])
diff --git a/tests/io/file_readline.py b/tests/io/file_readline.py
new file mode 100644
index 0000000000..c6a67d0e15
--- /dev/null
+++ b/tests/io/file_readline.py
@@ -0,0 +1,6 @@
+f = open("io/data/file1")
+print(f.readline())
+print(f.readline(3))
+print(f.readline(4))
+print(f.readline(5))
+print(f.readline())
diff --git a/tests/unicode/data/utf-8_2.txt b/tests/unicode/data/utf-8_2.txt
index ab0eaa4e0d..6f142974e7 100644
--- a/tests/unicode/data/utf-8_2.txt
+++ b/tests/unicode/data/utf-8_2.txt
@@ -1 +1,2 @@
 aαbβcγdδ
+ぁ🙐
diff --git a/tests/unicode/file2.py b/tests/unicode/file2.py
index b8a3419660..8c45f91faf 100644
--- a/tests/unicode/file2.py
+++ b/tests/unicode/file2.py
@@ -10,6 +10,16 @@ def do(mode):
     print(f.read(1))
     print(f.read(2))
     print(f.read(4))
+
+    # skip to end of line
+    f.readline()
+
+    # check 3-byte utf-8 char
+    print(f.read(1 if mode == 'rt' else 3))
+
+    # check 4-byte utf-8 char
+    print(f.read(1 if mode == 'rt' else 4))
+
     f.close()
 
 do('rb')