v0.2.14-pre.004

crates/ksp-program-api/tests/dependency_boundary.rs

@@ -1,5 +1,5 @@
 // file: crates/ksp-program-api/tests/dependency_boundary.rs
-// version: 2
+// version: 3
 
 //! Dependency and declarative-surface canaries for the Program API foundation.
 
@@ -46,10 +46,11 @@ fn pre_002_manifest_has_exact_core_and_interface_runtime_dependencies() {
 }
 
 #[test]
-fn pre_003_crate_root_adds_only_recognition_and_decode_outcome() {
+fn pre_004_crate_root_adds_decoder_without_runtime_surface() {
     let crate_root = include_str!("../src/lib.rs");
     for required in [
         "ProgramInstructionDecodeOutcome",
+        "ProgramInstructionDecoder",
         "ProgramInstructionRecognition",
         "Error",
         "ErrorCode",
@@ -61,9 +62,18 @@ fn pre_003_crate_root_adds_only_recognition_and_decode_outcome() {
     ] {
         assert!(crate_root.contains(required), "required Program API facade export missing: {required}");
     }
-    for forbidden in ["pub mod ", "ProgramInstructionDecoder", "ProgramExecutionPreparer", "TRACING_TARGET", "ksp_logging_lib", "serde", "Any"] {
-        assert!(!crate_root.contains(forbidden), "forbidden pre.003 Program API surface detected: {forbidden}");
+    for forbidden in ["pub mod ", "ProgramExecutionPreparer", "TRACING_TARGET", "ksp_logging_lib", "serde", "Any"] {
+        assert!(!crate_root.contains(forbidden), "forbidden pre.004 Program API surface detected: {forbidden}");
     }
+    let decoder_source = include_str!("../src/program_instruction_decoder.rs");
+    assert!(decoder_source.contains("pub trait ProgramInstructionDecoder: Send + Sync"));
+    assert!(decoder_source.contains("type Decoded;"));
+    assert!(decoder_source.contains("fn program_ids(&self) -> &[crate::Pubkey];"));
+    assert!(decoder_source.contains("fn recognize(&self, instruction: &crate::ProgramInstruction)"));
+    assert!(decoder_source.contains("crate::Result<crate::ProgramInstructionDecodeOutcome<Self::Decoded>>"));
+    assert!(!decoder_source.contains("ProgramExecutionPreparer"));
+    assert!(!decoder_source.contains("serde"));
+    assert!(!decoder_source.contains("std::any::Any"));
     let outcome_source = include_str!("../src/program_instruction_decode.rs");
     for forbidden in ["Ignored", "Failed", "serde", "Any"] {
         assert!(!outcome_source.contains(forbidden), "forbidden recognition/outcome concept detected: {forbidden}");