Close some testcase, remove useless demo.
Applied in changeset commit:f26ace48537c6ea631f2db726eced251ab34d2e5.
Applied in changeset commit:b122a03da694a6fbae7e13c4714ff68de57adbf2.
Applied in changeset commit:99686d1b22d5fafd09310188f530225af4905df5.
Applied in changeset commit:67ccf15eccff19ed60139a7ba9e8d6a1ebd5e4a6.
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Close some testcase, remove useless demo.