test: Unit tests solver discovery (#125)

* test: Unit test cases for discovery

* test: Fixing solver-discovery test case

* test: Using builders

* test: Fixes

* test: Fixes

* test: Fixing test

Author: NicoMolinaOZ

Cargo.lock

@@ -27,4 +27,7 @@ tokio = { version = "1.0", features = ["sync", "rt-multi-thread"] }
 toml = { workspace = true }
 tower = "0.5"
 tower-http = { version = "0.6", features = ["cors"] }
-tracing = "0.1"
+tracing = "0.1"
+
+[dev-dependencies]
+mockall = "0.13"