micropython: add micropython component

components/language/micropython/tests/basics/string_format2.py

@@ -0,0 +1,64 @@
+# comprehensive functionality test for {} format string
+
+int_tests = False # these take a while
+char_tests = True
+str_tests = True
+
+def test(fmt, *args):
+    print('{:8s}'.format(fmt) + '>' +  fmt.format(*args) + '<')
+
+def test_fmt(conv, fill, alignment, sign, prefix, width, precision, type, arg):
+    fmt = '{'
+    if conv:
+        fmt += '!'
+        fmt += conv
+    fmt += ':'
+    if alignment:
+        fmt += fill
+        fmt += alignment
+    fmt += sign
+    fmt += prefix
+    fmt += width
+    if precision:
+        fmt += '.'
+        fmt += precision
+    fmt += type
+    fmt += '}'
+    test(fmt,  arg)
+    if fill == '0' and alignment == '=':
+        fmt = '{:'
+        fmt += sign
+        fmt += prefix
+        fmt += width
+        if precision:
+            fmt += '.'
+            fmt += precision
+        fmt += type
+        fmt += '}'
+        test(fmt, arg)
+
+if int_tests:
+    int_nums = (-1234, -123, -12, -1, 0, 1, 12, 123, 1234, True, False)
+    #int_nums = (-12, -1, 0, 1, 12, True, False)
+    for type in ('', 'b', 'd', 'o', 'x', 'X'):
+        for width in ('', '1', '3', '5', '7'):
+            for alignment in ('', '<', '>', '=', '^'):
+                for fill in ('', ' ', '0', '@'):
+                    for sign in ('', '+', '-', ' '):
+                        for prefix in ('', '#'):
+                            for num in int_nums:
+                                test_fmt('', fill, alignment, sign, prefix, width, '', type, num)
+
+if char_tests:
+    for width in ('', '1', '2'):
+        for alignment in ('', '<', '>', '^'):
+            for fill in ('', ' ', '0', '@'):
+                test_fmt('', fill, alignment, '', '', width, '', 'c', 48)
+
+if str_tests:
+    for conv in ('', 'r', 's'):
+        for width in ('', '1', '4', '10'):
+            for alignment in ('', '<', '>', '^'):
+                for fill in ('', ' ', '0', '@'):
+                    for str in ('', 'a', 'bcd', 'This is a test with a longer string'):
+                        test_fmt(conv, fill, alignment, '', '', width, '', 's', str)