micropython: add micropython component

components/language/micropython/tests/basics/string1.py

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+# basic strings
+
+# literals
+print('abc')
+print(r'abc')
+print(u'abc')
+print(repr('\a\b\t\n\v\f\r'))
+print('\z') # unrecognised escape char
+
+# construction
+print(str())
+print(str('abc'))
+
+# inplace addition
+x = 'abc'
+print(x)
+x += 'def'
+print(x)
+
+# binary ops
+print('123' + "456")
+print('123' * 5)
+try:
+    '123' * '1'
+except TypeError:
+    print('TypeError')
+try:
+    '123' + 1
+except TypeError:
+    print('TypeError')
+
+# subscription
+print('abc'[1])
+print('abc'[-1])
+try:
+    'abc'[100]
+except IndexError:
+    print('IndexError')
+try:
+    'abc'[-4]
+except IndexError:
+    print('IndexError')
+
+# iter
+print(list('str'))
+
+# comparison
+print('123' + '789' == '123789')
+print('a' + 'b' != 'a' + 'b ')
+print('1' + '2' > '2')
+print('1' + '2' < '2')
+
+# printing quote char in string
+print(repr('\'\"'))