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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/integer-encoding-1.1.7/src/varint_tests.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>varint_tests.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script src="../../storage.js"></script><script src="../../crates.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg">
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</pre><div class="example-wrap"><pre class="rust ">
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"tokio_async"</span>, <span class="ident">feature</span> <span class="op">=</span> <span class="string">"futures_async"</span>))]</span>
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">reader</span>::<span class="ident">VarIntAsyncReader</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"tokio_async"</span>, <span class="ident">feature</span> <span class="op">=</span> <span class="string">"futures_async"</span>))]</span>
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">writer</span>::<span class="ident">VarIntAsyncWriter</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">writer</span>::<span class="ident">VarIntWriter</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">reader</span>::<span class="ident">VarIntReader</span>;
<span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">varint</span>::<span class="ident">VarInt</span>;
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_required_space</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">0</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">1</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">1</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">128</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">2</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">16384</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">3</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">2097151</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">3</span>);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">2097152</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">required_space</span>(), <span class="number">4</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_encode_u64</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">0</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>(), <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0b00000000</span>]);
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">300</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>(), <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0b10101100</span>, <span class="number">0b00000010</span>]);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_identity_u64</span>() {
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">1</span> <span class="kw">as</span> <span class="ident">u64</span>..<span class="number">100</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">decode_var</span>(<span class="ident">i</span>.<span class="ident">encode_var_vec</span>().<span class="ident">as_slice</span>()), (<span class="ident">i</span>, <span class="number">1</span>));
}
<span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">16400</span> <span class="kw">as</span> <span class="ident">u64</span>..<span class="number">16500</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">decode_var</span>(<span class="kw-2">&</span><span class="ident">i</span>.<span class="ident">encode_var_vec</span>().<span class="ident">as_slice</span>()), (<span class="ident">i</span>, <span class="number">3</span>));
}
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_decode_max_u64</span>() {
<span class="kw">let</span> <span class="ident">max_vec_encoded</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0x01</span>];
<span class="macro">assert_eq</span><span class="macro">!</span>(
<span class="ident">u64</span>::<span class="ident">decode_var</span>(<span class="ident">max_vec_encoded</span>.<span class="ident">as_slice</span>()).<span class="number">0</span>,
<span class="ident">u64</span>::<span class="ident">max_value</span>()
);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_encode_i64</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">0</span> <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(), (<span class="number">0</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">150</span> <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(), (<span class="number">300</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(
(<span class="op">-</span><span class="number">150</span> <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(),
(<span class="number">299</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>()
);
<span class="macro">assert_eq</span><span class="macro">!</span>(
(<span class="op">-</span><span class="number">2147483648</span> <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(),
(<span class="number">4294967295</span> <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">encode_var_vec</span>()
);
<span class="macro">assert_eq</span><span class="macro">!</span>(
(<span class="ident">i64</span>::<span class="ident">max_value</span>() <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(),
<span class="kw-2">&</span>[<span class="number">0xFE</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0x01</span>]
);
<span class="macro">assert_eq</span><span class="macro">!</span>(
(<span class="ident">i64</span>::<span class="ident">min_value</span>() <span class="kw">as</span> <span class="ident">i64</span>).<span class="ident">encode_var_vec</span>(),
<span class="kw-2">&</span>[<span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0x01</span>]
);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_decode_min_i64</span>() {
<span class="kw">let</span> <span class="ident">min_vec_encoded</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0x01</span>];
<span class="macro">assert_eq</span><span class="macro">!</span>(
<span class="ident">i64</span>::<span class="ident">decode_var</span>(<span class="ident">min_vec_encoded</span>.<span class="ident">as_slice</span>()).<span class="number">0</span>,
<span class="ident">i64</span>::<span class="ident">min_value</span>()
);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_decode_max_i64</span>() {
<span class="kw">let</span> <span class="ident">max_vec_encoded</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0xFE</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0xFF</span>, <span class="number">0x01</span>];
<span class="macro">assert_eq</span><span class="macro">!</span>(
<span class="ident">i64</span>::<span class="ident">decode_var</span>(<span class="ident">max_vec_encoded</span>.<span class="ident">as_slice</span>()).<span class="number">0</span>,
<span class="ident">i64</span>::<span class="ident">max_value</span>()
);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_encode_i16</span>() {
<span class="macro">assert_eq</span><span class="macro">!</span>((<span class="number">150</span> <span class="kw">as</span> <span class="ident">i16</span>).<span class="ident">encode_var_vec</span>(), (<span class="number">300</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(
(<span class="op">-</span><span class="number">150</span> <span class="kw">as</span> <span class="ident">i16</span>).<span class="ident">encode_var_vec</span>(),
(<span class="number">299</span> <span class="kw">as</span> <span class="ident">u32</span>).<span class="ident">encode_var_vec</span>()
);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_reader_writer</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="number">128</span>);
<span class="kw">let</span> <span class="ident">i1</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">let</span> <span class="ident">i2</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">65532</span>;
<span class="kw">let</span> <span class="ident">i3</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">4200123456</span>;
<span class="kw">let</span> <span class="ident">i4</span>: <span class="ident">i64</span> <span class="op">=</span> <span class="ident">i3</span> <span class="kw">as</span> <span class="ident">i64</span> <span class="op">*</span> <span class="number">1000</span>;
<span class="kw">let</span> <span class="ident">i5</span>: <span class="ident">i32</span> <span class="op">=</span> <span class="op">-</span><span class="number">32456</span>;
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">write_varint</span>(<span class="ident">i1</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">write_varint</span>(<span class="ident">i2</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">write_varint</span>(<span class="ident">i3</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">write_varint</span>(<span class="ident">i4</span>).<span class="ident">is_ok</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">buf</span>.<span class="ident">write_varint</span>(<span class="ident">i5</span>).<span class="ident">is_ok</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">reader</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">as_ref</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i1</span>, <span class="ident">reader</span>.<span class="ident">read_varint</span>().<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i2</span>, <span class="ident">reader</span>.<span class="ident">read_varint</span>().<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i3</span>, <span class="ident">reader</span>.<span class="ident">read_varint</span>().<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i4</span>, <span class="ident">reader</span>.<span class="ident">read_varint</span>().<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i5</span>, <span class="ident">reader</span>.<span class="ident">read_varint</span>().<span class="ident">unwrap</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">reader</span>.<span class="ident">read_varint</span>::<span class="op"><</span><span class="ident">u32</span><span class="op">></span>().<span class="ident">is_err</span>());
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">any</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"tokio_async"</span>, <span class="ident">feature</span> <span class="op">=</span> <span class="string">"futures_async"</span>))]</span>
<span class="attribute">#[<span class="ident">tokio</span>::<span class="ident">test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">test_async_reader</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buf</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="number">128</span>);
<span class="kw">let</span> <span class="ident">i1</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">1</span>;
<span class="kw">let</span> <span class="ident">i2</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">65532</span>;
<span class="kw">let</span> <span class="ident">i3</span>: <span class="ident">u32</span> <span class="op">=</span> <span class="number">4200123456</span>;
<span class="kw">let</span> <span class="ident">i4</span>: <span class="ident">i64</span> <span class="op">=</span> <span class="ident">i3</span> <span class="kw">as</span> <span class="ident">i64</span> <span class="op">*</span> <span class="number">1000</span>;
<span class="kw">let</span> <span class="ident">i5</span>: <span class="ident">i32</span> <span class="op">=</span> <span class="op">-</span><span class="number">32456</span>;
<span class="ident">buf</span>.<span class="ident">write_varint_async</span>(<span class="ident">i1</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>();
<span class="ident">buf</span>.<span class="ident">write_varint_async</span>(<span class="ident">i2</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>();
<span class="ident">buf</span>.<span class="ident">write_varint_async</span>(<span class="ident">i3</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>();
<span class="ident">buf</span>.<span class="ident">write_varint_async</span>(<span class="ident">i4</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>();
<span class="ident">buf</span>.<span class="ident">write_varint_async</span>(<span class="ident">i5</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">reader</span>: <span class="kw-2">&</span>[<span class="ident">u8</span>] <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">as_ref</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i1</span>, <span class="ident">reader</span>.<span class="ident">read_varint_async</span>().<span class="kw">await</span>.<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i2</span>, <span class="ident">reader</span>.<span class="ident">read_varint_async</span>().<span class="kw">await</span>.<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i3</span>, <span class="ident">reader</span>.<span class="ident">read_varint_async</span>().<span class="kw">await</span>.<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i4</span>, <span class="ident">reader</span>.<span class="ident">read_varint_async</span>().<span class="kw">await</span>.<span class="ident">unwrap</span>());
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">i5</span>, <span class="ident">reader</span>.<span class="ident">read_varint_async</span>().<span class="kw">await</span>.<span class="ident">unwrap</span>());
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">reader</span>.<span class="ident">read_varint_async</span>::<span class="op"><</span><span class="ident">u32</span><span class="op">></span>().<span class="kw">await</span>.<span class="ident">is_err</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_unterminated_varint</span>() {
<span class="kw">let</span> <span class="ident">buf</span> <span class="op">=</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="number">0xff</span> <span class="kw">as</span> <span class="ident">u8</span>; <span class="number">12</span>];
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">read</span> <span class="op">=</span> <span class="ident">buf</span>.<span class="ident">as_slice</span>();
<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">read</span>.<span class="ident">read_varint</span>::<span class="op"><</span><span class="ident">u64</span><span class="op">></span>().<span class="ident">is_err</span>());
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">test_unterminated_varint_2</span>() {
<span class="kw">let</span> <span class="ident">buf</span> <span class="op">=</span> [<span class="number">0xff</span>, <span class="number">0xff</span>];
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">read</span> <span class="op">=</span> <span class="kw-2">&</span><span class="ident">buf</span>[..];
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">16383</span>, <span class="ident">read</span>.<span class="ident">read_varint</span>::<span class="op"><</span><span class="ident">u64</span><span class="op">></span>().<span class="ident">unwrap</span>());
}
}
</pre></div>
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