tests: Rename test scripts, changing - to _ for consistency.

From now on, all new tests must use underscore.

Addresses issue #727.

1 files changed, 50 insertions, 0 deletions

diff --git a/tests/basics/int_small.py b/tests/basics/int_small.py
new file mode 100644
index 000000000..102dac8ae
--- /dev/null
+++ b/tests/basics/int_small.py
@@ -0,0 +1,50 @@
+# This tests small int range for 32-bit machine
+
+# Small ints are variable-length encoded in MicroPython, so first
+# test that encoding works as expected.
+
+print(0)
+print(1)
+print(-1)
+# Value is split in 7-bit "subwords", and taking into account that all
+# ints in Python are signed, there're 6 bits of magnitude. So, around 2^6
+# there's "turning point"
+print(63)
+print(64)
+print(65)
+print(-63)
+print(-64)
+print(-65)
+# Maximum values of small ints on 32-bit platform
+print(1073741823)
+# Per python semantics, lexical integer is without a sign (i.e. positive)
+# and '-' is unary minus operation applied to it. That's why -1073741824
+# (min two-complement's negative value) is not allowed.
+print(-1073741823)
+
+# Operations tests
+
+a = 0x3fffff
+print(a)
+a *= 0x10
+print(a)
+a *= 0x10
+print(a)
+a += 0xff
+print(a)
+# This would overflow
+#a += 1
+
+a = -0x3fffff
+print(a)
+a *= 0x10
+print(a)
+a *= 0x10
+print(a)
+a -= 0xff
+print(a)
+# This still doesn't overflow
+a -= 1
+print(a)
+# This would overflow
+#a -= 1