Refactor docs and make Input API more explicit (#235)

tests/airbender/basic/src/main.rs

@@ -7,7 +7,6 @@
 
 use ere_platform_airbender::AirbenderPlatform;
 use ere_test_utils::{
-    guest::Sha256,
     io::serde::bincode::BincodeLegacy,
     program::{basic::BasicProgram, Program},
 };
@@ -16,5 +15,5 @@ mod airbender_rt;
 
 #[inline(never)]
 fn main() {
-    BasicProgram::<BincodeLegacy>::run::<AirbenderPlatform<Sha256>>();
+    BasicProgram::<BincodeLegacy>::run_output_sha256::<AirbenderPlatform>();
 }

tests/openvm/basic/src/main.rs

@@ -1,10 +1,9 @@
 use ere_platform_openvm::OpenVMPlatform;
 use ere_test_utils::{
-    guest::Sha256,
     io::serde::bincode::BincodeLegacy,
     program::{basic::BasicProgram, Program},
 };
 
 fn main() {
-    BasicProgram::<BincodeLegacy>::run::<OpenVMPlatform<Sha256>>();
+    BasicProgram::<BincodeLegacy>::run_output_sha256::<OpenVMPlatform>();
 }

tests/openvm/stock_nightly_no_std/src/main.rs

@@ -1,10 +1,12 @@
 #![no_std]
 #![no_main]
+
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::Ordering;
 use core::sync::atomic::AtomicU16;
+use core::sync::atomic::Ordering;
+
 mod openvm_rt;
 
 fn main() {

tests/pico/stock_nightly_no_std/src/main.rs

@@ -1,10 +1,11 @@
 #![no_std]
 #![no_main]
+
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::Ordering;
 use core::sync::atomic::AtomicU16;
+use core::sync::atomic::Ordering;
 
 mod pico_rt;
 

tests/risc0/allocs_alignment/src/main.rs

@@ -1,9 +1,9 @@
-use ere_platform_risc0::{Platform, Risc0Platform};
-
-type P = Risc0Platform;
+use ere_platform_risc0::risc0_zkvm::guest::env::read_slice;
 
 fn main() {
-    let alignment = u32::from_le_bytes(P::read_whole_input().try_into().unwrap()) as usize;
+    let mut alignment = [0; 4];
+    read_slice(&mut alignment);
+    let alignment = u32::from_le_bytes(alignment) as usize;
 
     let layout = std::alloc::Layout::from_size_align(1, alignment).unwrap();
     let ptr = unsafe { std::alloc::alloc(layout) };

tests/risc0/stock_nightly_no_std/src/main.rs

@@ -1,10 +1,11 @@
 #![no_std]
 #![no_main]
+
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::Ordering;
 use core::sync::atomic::AtomicU16;
+use core::sync::atomic::Ordering;
 
 mod risc0_rt;
 

tests/sp1/stock_nightly_no_std/src/main.rs

@@ -1,10 +1,11 @@
 #![no_std]
 #![no_main]
+
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::Ordering;
 use core::sync::atomic::AtomicU16;
+use core::sync::atomic::Ordering;
 
 mod sp1;