1 files changed, 80 insertions, 0 deletions
diff --git a/tests/lib/test_tokens.py b/tests/lib/test_tokens.py
new file mode 100644
index 0000000..89ce7ac
--- /dev/null
+++ b/tests/lib/test_tokens.py
@@ -0,0 +1,80 @@
+
+import yaml
+import pprint
+
+# Tokens mnemonic:
+# directive:            %
+# document_start:       ---
+# document_end:         ...
+# alias:                *
+# anchor:               &
+# tag:                  !
+# scalar                _
+# block_sequence_start: [[
+# block_mapping_start:  {{
+# block_end:            ]}
+# flow_sequence_start:  [
+# flow_sequence_end:    ]
+# flow_mapping_start:   {
+# flow_mapping_end:     }
+# entry:                ,
+# key:                  ?
+# value:                :
+
+_replaces = {
+    yaml.DirectiveToken: '%',
+    yaml.DocumentStartToken: '---',
+    yaml.DocumentEndToken: '...',
+    yaml.AliasToken: '*',
+    yaml.AnchorToken: '&',
+    yaml.TagToken: '!',
+    yaml.ScalarToken: '_',
+    yaml.BlockSequenceStartToken: '[[',
+    yaml.BlockMappingStartToken: '{{',
+    yaml.BlockEndToken: ']}',
+    yaml.FlowSequenceStartToken: '[',
+    yaml.FlowSequenceEndToken: ']',
+    yaml.FlowMappingStartToken: '{',
+    yaml.FlowMappingEndToken: '}',
+    yaml.BlockEntryToken: ',',
+    yaml.FlowEntryToken: ',',
+    yaml.KeyToken: '?',
+    yaml.ValueToken: ':',
+}
+
+def test_tokens(data_filename, tokens_filename, verbose=False):
+    tokens1 = []
+    with open(tokens_filename, 'r') as file:
+        tokens2 = file.read().split()
+    try:
+        with open(data_filename, 'rb') as file:
+            for token in yaml.scan(file):
+                if not isinstance(token, (yaml.StreamStartToken, yaml.StreamEndToken)):
+                    tokens1.append(_replaces[token.__class__])
+    finally:
+        if verbose:
+            print("TOKENS1:", ' '.join(tokens1))
+            print("TOKENS2:", ' '.join(tokens2))
+    assert len(tokens1) == len(tokens2), (tokens1, tokens2)
+    for token1, token2 in zip(tokens1, tokens2):
+        assert token1 == token2, (token1, token2)
+
+test_tokens.unittest = ['.data', '.tokens']
+
+def test_scanner(data_filename, canonical_filename, verbose=False):
+    for filename in [data_filename, canonical_filename]:
+        tokens = []
+        try:
+            with open(filename, 'rb') as file:
+                for token in yaml.scan(file):
+                    tokens.append(token.__class__.__name__)
+        finally:
+            if verbose:
+                pprint.pprint(tokens)
+
+test_scanner.unittest = ['.data', '.canonical']
+
+if __name__ == '__main__':
+    import test_appliance
+    test_appliance.run(globals())
+