Add failing page_size test.

Author: V0ldek

test-cargo-miri/Cargo.lock

@@ -22,6 +22,7 @@ rand = { version = "0.8", features = ["small_rng"] }
 getrandom_1 = { package = "getrandom", version = "0.1" }
 getrandom_2 = { package = "getrandom", version = "0.2" }
 serde_derive = "1.0" # not actually used, but exercises some unique code path (`--extern` .so file)
+page_size = "0.4.1"
 
 [lib]
 test = false # test that this is respected (will show in the output)

test-cargo-miri/Cargo.toml

@@ -5,7 +5,7 @@ test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
 
 imported main
 
-running 7 tests
-..i....
-test result: ok. 6 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
+running 8 tests
+..i.....
+test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
 

test-cargo-miri/test.cross-target.stdout.ref

@@ -5,9 +5,9 @@ test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
 
 imported main
 
-running 7 tests
-..i....
-test result: ok. 6 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
+running 8 tests
+..i.....
+test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
 
 
 running 4 tests

test-cargo-miri/test.default.stdout.ref

@@ -8,5 +8,5 @@ imported main
 running 1 test
 test simple1 ... ok
 
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 6 filtered out
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 7 filtered out
 

test-cargo-miri/test.filter.cross-target.stdout.ref

@@ -8,7 +8,7 @@ imported main
 running 1 test
 test simple1 ... ok
 
-test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 6 filtered out
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 7 filtered out
 
 
 running 0 tests

test-cargo-miri/test.filter.stdout.ref

@@ -1,12 +1,13 @@
 
-running 7 tests
+running 8 tests
 test cargo_env ... ok
 test do_panic - should panic ... ok
 test does_not_work_on_miri ... ignored
 test entropy_rng ... ok
 test fail_index_check - should panic ... ok
+test page_size ... ok
 test simple1 ... ok
 test simple2 ... ok
 
-test result: ok. 6 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
+test result: ok. 7 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
 

test-cargo-miri/test.test-target.stdout.ref

@@ -1,4 +1,4 @@
-use rand::{SeedableRng, Rng, rngs::SmallRng};
+use rand::{rngs::SmallRng, Rng, SeedableRng};
 
 // Having more than 1 test does seem to make a difference
 // (i.e., this calls ptr::swap which having just one test does not).
@@ -49,14 +49,26 @@ fn cargo_env() {
 }
 
 #[test]
-#[should_panic(expected="Explicit panic")]
-fn do_panic() { // In large, friendly letters :)
+#[should_panic(expected = "Explicit panic")]
+fn do_panic() {
+    // In large, friendly letters :)
     panic!("Explicit panic from test!");
 }
 
 #[test]
 #[allow(unconditional_panic)]
-#[should_panic(expected="the len is 0 but the index is 42")]
+#[should_panic(expected = "the len is 0 but the index is 42")]
 fn fail_index_check() {
     [][42]
 }
+
+#[test]
+fn page_size() {
+    let page_size = page_size::get();
+
+    assert!(
+        page_size.next_power_of_two() == page_size,
+        "page size not a power of two: {}",
+        page_size
+    );
+}