[tests] Add basic tests for cache_dump

tests/cache_dump.rs

@@ -0,0 +1,85 @@
+use anyhow::Result;
+
+mod common;
+
+use common::common_args::*;
+use common::input_arg::*;
+use common::test_dir::*;
+use common::*;
+
+//------------------------------------------
+
+const USAGE: &str = "Usage: cache_dump [options] {device|file}\n\
+                     Options:\n  \
+                       {-h|--help}\n  \
+                       {-o <xml file>}\n  \
+                       {-V|--version}\n  \
+                       {--repair}";
+
+//------------------------------------------
+
+struct CacheDump;
+
+impl<'a> Program<'a> for CacheDump {
+    fn name() -> &'a str {
+        "cache_dump"
+    }
+
+    fn path() -> &'a str {
+        CACHE_DUMP
+    }
+
+    fn usage() -> &'a str {
+        USAGE
+    }
+
+    fn arg_type() -> ArgType {
+        ArgType::InputArg
+    }
+
+    fn bad_option_hint(option: &str) -> String {
+        msg::bad_option_hint(option)
+    }
+}
+
+impl<'a> InputProgram<'a> for CacheDump {
+    fn mk_valid_input(td: &mut TestDir) -> Result<std::path::PathBuf> {
+        mk_valid_md(td)
+    }
+
+    fn file_not_found() -> &'a str {
+        msg::FILE_NOT_FOUND
+    }
+
+    fn missing_input_arg() -> &'a str {
+        msg::MISSING_INPUT_ARG
+    }
+
+    fn corrupted_input() -> &'a str {
+        msg::BAD_SUPERBLOCK
+    }
+}
+
+//------------------------------------------
+
+test_accepts_help!(CacheDump);
+test_accepts_version!(CacheDump);
+test_rejects_bad_option!(CacheDump);
+
+test_missing_input_arg!(CacheDump);
+test_input_file_not_found!(CacheDump);
+test_input_cannot_be_a_directory!(CacheDump);
+test_unreadable_input_file!(CacheDump);
+
+//------------------------------------------
+
+/*
+  (define-scenario (cache-dump restore-is-noop)
+    "cache_dump followed by cache_restore is a noop."
+    (with-valid-metadata (md)
+      (run-ok-rcv (d1-stdout _) (cache-dump md)
+        (with-temp-file-containing ((xml "cache.xml" d1-stdout))
+          (run-ok (cache-restore "-i" xml "-o" md))
+          (run-ok-rcv (d2-stdout _) (cache-dump md)
+            (assert-equal d1-stdout d2-stdout))))))
+*/