test for bad input, improve help text

src/bipsea/bipsea.py

@@ -125,7 +125,7 @@ def bip39_cmd(from_, to, input, number, passphrase, pretty):
         words = normalize_list(re.split(r"\s+", input), lower=True)
         if language and not verify_seed_words(words, language):
             raise click.BadParameter(
-                f"--input mnemonic not in {from_} or has bad checksum.",
+                f"--input mnemonic not in {ISO_TO_LANGUAGE[from_]} wordlist or has bad checksum.",
                 param_hint="--input",
             )
         if from_ == "any":

tests/test_cli.py

@@ -73,7 +73,8 @@ def test_seed_option_sensitivity(runner, language, vectors):
             result = runner.invoke(cli, cmd)
             if suffix == ".":
                 assert result.exit_code != 0
-                assert lang_code in result.output
+                assert ISO_TO_LANGUAGE[lang_code] in result.output
+                assert "not in" in result.output
             else:
                 assert result.exit_code == 0
                 result_xprv = result.output.strip().split("\n")[-1]
@@ -242,3 +243,10 @@ def test_entropy_wif(runner, vector):
     result = runner.invoke(cli, ["entropy", "-a", "wif", "--input", xprv])
     assert result.exit_code == 0
     assert result.output.strip() == vector["derived_wif"]
+
+
+def test_seed_bad_input(runner):
+    phrase = "きわめる そせい ばかり なみだ みつかる くしゃみ にあう ひみつ かくとく よけい げんき ほきょう"
+    result = runner.invoke(cli, ["seed", "-f", "spa", "--input", phrase])
+    assert result.exit_code != 0
+    assert "not in spa" in result.output