1 files changed, 277 insertions, 0 deletions
diff --git a/compiler/rustc_serialize/tests/opaque.rs b/compiler/rustc_serialize/tests/opaque.rs
new file mode 100644
index 000000000..3a695d071
--- /dev/null
+++ b/compiler/rustc_serialize/tests/opaque.rs
@@ -0,0 +1,277 @@
+#![allow(rustc::internal)]
+
+use rustc_macros::{Decodable, Encodable};
+use rustc_serialize::opaque::{MemDecoder, MemEncoder};
+use rustc_serialize::{Decodable, Encodable};
+use std::fmt::Debug;
+
+#[derive(PartialEq, Clone, Debug, Encodable, Decodable)]
+struct Struct {
+    a: (),
+    b: u8,
+    c: u16,
+    d: u32,
+    e: u64,
+    f: usize,
+
+    g: i8,
+    h: i16,
+    i: i32,
+    j: i64,
+    k: isize,
+
+    l: char,
+    m: String,
+    n: f32,
+    o: f64,
+    p: bool,
+    q: Option<u32>,
+}
+
+fn check_round_trip<
+    T: Encodable<MemEncoder> + for<'a> Decodable<MemDecoder<'a>> + PartialEq + Debug,
+>(
+    values: Vec<T>,
+) {
+    let mut encoder = MemEncoder::new();
+    for value in &values {
+        Encodable::encode(value, &mut encoder);
+    }
+
+    let data = encoder.finish();
+    let mut decoder = MemDecoder::new(&data[..], 0);
+
+    for value in values {
+        let decoded = Decodable::decode(&mut decoder);
+        assert_eq!(value, decoded);
+    }
+}
+
+#[test]
+fn test_unit() {
+    check_round_trip(vec![(), (), (), ()]);
+}
+
+#[test]
+fn test_u8() {
+    let mut vec = vec![];
+    for i in u8::MIN..u8::MAX {
+        vec.push(i);
+    }
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_u16() {
+    for i in u16::MIN..u16::MAX {
+        check_round_trip(vec![1, 2, 3, i, i, i]);
+    }
+}
+
+#[test]
+fn test_u32() {
+    check_round_trip(vec![1, 2, 3, u32::MIN, 0, 1, u32::MAX, 2, 1]);
+}
+
+#[test]
+fn test_u64() {
+    check_round_trip(vec![1, 2, 3, u64::MIN, 0, 1, u64::MAX, 2, 1]);
+}
+
+#[test]
+fn test_usize() {
+    check_round_trip(vec![1, 2, 3, usize::MIN, 0, 1, usize::MAX, 2, 1]);
+}
+
+#[test]
+fn test_i8() {
+    let mut vec = vec![];
+    for i in i8::MIN..i8::MAX {
+        vec.push(i);
+    }
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_i16() {
+    for i in i16::MIN..i16::MAX {
+        check_round_trip(vec![-1, 2, -3, i, i, i, 2]);
+    }
+}
+
+#[test]
+fn test_i32() {
+    check_round_trip(vec![-1, 2, -3, i32::MIN, 0, 1, i32::MAX, 2, 1]);
+}
+
+#[test]
+fn test_i64() {
+    check_round_trip(vec![-1, 2, -3, i64::MIN, 0, 1, i64::MAX, 2, 1]);
+}
+
+#[test]
+fn test_isize() {
+    check_round_trip(vec![-1, 2, -3, isize::MIN, 0, 1, isize::MAX, 2, 1]);
+}
+
+#[test]
+fn test_bool() {
+    check_round_trip(vec![false, true, true, false, false]);
+}
+
+#[test]
+fn test_f32() {
+    let mut vec = vec![];
+    for i in -100..100 {
+        vec.push((i as f32) / 3.0);
+    }
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_f64() {
+    let mut vec = vec![];
+    for i in -100..100 {
+        vec.push((i as f64) / 3.0);
+    }
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_char() {
+    let vec = vec!['a', 'b', 'c', 'd', 'A', 'X', ' ', '#', 'Ö', 'Ä', 'µ', '€'];
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_string() {
+    let vec = vec![
+        "abcbuÖeiovÄnameÜavmpßvmea€µsbpnvapeapmaebn".to_string(),
+        "abcbuÖganeiovÄnameÜavmpßvmea€µsbpnvapeapmaebn".to_string(),
+        "abcbuÖganeiovÄnameÜavmpßvmea€µsbpapmaebn".to_string(),
+        "abcbuÖganeiovÄnameÜavmpßvmeabpnvapeapmaebn".to_string(),
+        "abcbuÖganeiÄnameÜavmpßvmea€µsbpnvapeapmaebn".to_string(),
+        "abcbuÖganeiovÄnameÜavmpßvmea€µsbpmaebn".to_string(),
+        "abcbuÖganeiovÄnameÜavmpßvmea€µnvapeapmaebn".to_string(),
+    ];
+
+    check_round_trip(vec);
+}
+
+#[test]
+fn test_option() {
+    check_round_trip(vec![Some(-1i8)]);
+    check_round_trip(vec![Some(-2i16)]);
+    check_round_trip(vec![Some(-3i32)]);
+    check_round_trip(vec![Some(-4i64)]);
+    check_round_trip(vec![Some(-5isize)]);
+
+    let none_i8: Option<i8> = None;
+    check_round_trip(vec![none_i8]);
+
+    let none_i16: Option<i16> = None;
+    check_round_trip(vec![none_i16]);
+
+    let none_i32: Option<i32> = None;
+    check_round_trip(vec![none_i32]);
+
+    let none_i64: Option<i64> = None;
+    check_round_trip(vec![none_i64]);
+
+    let none_isize: Option<isize> = None;
+    check_round_trip(vec![none_isize]);
+}
+
+#[test]
+fn test_struct() {
+    check_round_trip(vec![Struct {
+        a: (),
+        b: 10,
+        c: 11,
+        d: 12,
+        e: 13,
+        f: 14,
+
+        g: 15,
+        h: 16,
+        i: 17,
+        j: 18,
+        k: 19,
+
+        l: 'x',
+        m: "abc".to_string(),
+        n: 20.5,
+        o: 21.5,
+        p: false,
+        q: None,
+    }]);
+
+    check_round_trip(vec![Struct {
+        a: (),
+        b: 101,
+        c: 111,
+        d: 121,
+        e: 131,
+        f: 141,
+
+        g: -15,
+        h: -16,
+        i: -17,
+        j: -18,
+        k: -19,
+
+        l: 'y',
+        m: "def".to_string(),
+        n: -20.5,
+        o: -21.5,
+        p: true,
+        q: Some(1234567),
+    }]);
+}
+
+#[derive(PartialEq, Clone, Debug, Encodable, Decodable)]
+enum Enum {
+    Variant1,
+    Variant2(usize, f32),
+    Variant3 { a: i32, b: char, c: bool },
+}
+
+#[test]
+fn test_enum() {
+    check_round_trip(vec![
+        Enum::Variant1,
+        Enum::Variant2(1, 2.5),
+        Enum::Variant3 { a: 3, b: 'b', c: false },
+        Enum::Variant3 { a: -4, b: 'f', c: true },
+    ]);
+}
+
+#[test]
+fn test_sequence() {
+    let mut vec = vec![];
+    for i in -100i64..100i64 {
+        vec.push(i * 100000);
+    }
+
+    check_round_trip(vec![vec]);
+}
+
+#[test]
+fn test_hash_map() {
+    use std::collections::HashMap;
+    let mut map = HashMap::new();
+    for i in -100i64..100i64 {
+        map.insert(i * 100000, i * 10000);
+    }
+
+    check_round_trip(vec![map]);
+}
+
+#[test]
+fn test_tuples() {
+    check_round_trip(vec![('x', (), false, 0.5f32)]);
+    check_round_trip(vec![(9i8, 10u16, 1.5f64)]);
+    check_round_trip(vec![(-12i16, 11u8, 12usize)]);
+    check_round_trip(vec![(1234567isize, 100000000000000u64, 99999999999999i64)]);
+    check_round_trip(vec![(String::new(), "some string".to_string())]);
+}