micropython: add micropython component

components/language/micropython/tests/extmod/btree1.py

@@ -0,0 +1,89 @@
+try:
+    import btree
+    import uio
+    import uerrno
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+# f = open("_test.db", "w+b")
+f = uio.BytesIO()
+db = btree.open(f, pagesize=512)
+
+db[b"foo3"] = b"bar3"
+db[b"foo1"] = b"bar1"
+db[b"foo2"] = b"bar2"
+db[b"bar1"] = b"foo1"
+
+dbstr = str(db)
+print(dbstr[:7], dbstr[-1:])
+
+print(db[b"foo2"])
+try:
+    print(db[b"foo"])
+except KeyError:
+    print("KeyError")
+print(db.get(b"foo"))
+print(db.get(b"foo", b"dflt"))
+
+del db[b"foo2"]
+try:
+    del db[b"foo"]
+except KeyError:
+    print("KeyError")
+
+for k, v in db.items():
+    print((k, v))
+
+print("---")
+for k, v in db.items(None, None):
+    print((k, v))
+
+print("---")
+for k, v in db.items(b"f"):
+    print((k, v))
+
+print("---")
+for k, v in db.items(b"f", b"foo3"):
+    print((k, v))
+
+print("---")
+for k, v in db.items(None, b"foo3"):
+    print((k, v))
+
+print("---")
+for k, v in db.items(b"f", b"foo3", btree.INCL):
+    print((k, v))
+
+print("---")
+for k, v in db.items(None, None, btree.DESC):
+    print((k, v))
+
+print(db.seq(1, b"foo1"))
+print(db.seq(1, b"qux"))
+
+try:
+    db.seq(b"foo1")
+except OSError as e:
+    print(e.errno == uerrno.EINVAL)
+
+print(list(db.keys()))
+print(list(db.values()))
+
+for k in db:
+    print(k)
+
+db.put(b"baz1", b"qux1")
+
+print("foo1", "foo1" in db)
+print("foo2", "foo2" in db)
+print("baz1", "baz1" in db)
+
+try:
+    print(db + db[b"foo1"])
+except TypeError:
+    print("TypeError")
+
+db.flush()
+db.close()
+f.close()