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Module : Test.Verify.PipelineTests
Description : Unit and integration tests for verification pipeline
Copyright : (c) 2026 Ahmad Ali Parr
License : BSL-1.0
Comprehensive tests for the verification pipeline covering:
- Individual stage execution
- Full pipeline workflow
- Error handling and recovery
- Determinism (same input = same output)
-}
module Test.Verify.PipelineTests (tests) where
import Test.Tasty (TestTree, testGroup)
import Test.Tasty.HUnit (testCase, (@?=), Assertion)
import Assertica.Verify.Pipeline
( PipelineState (..)
, runLexer
, runParser
, runElaborator
, runTypeChecker
, runProofChecker
, runCodeGen
)
import Assertica.Verify.Report
( StageResult (..)
, Verdict (..)
, ErrorDetail (..)
, ErrorCategory (..)
, isSuccess
, allStagesSuccessful
)
-- ============================================================================
-- PIPELINE TESTS
-- ============================================================================
tests :: TestTree
tests = testGroup "Assertica.Verify.Pipeline"
[ testGroup "Lexer Stage"
[ testCase "lexer accepts non-empty source" $
testLexerAcceptsNonEmpty
, testCase "lexer rejects empty source" $
testLexerRejectsEmpty
, testCase "lexer preserves source" $
testLexerPreservesSource
]
, testGroup "Parser Stage"
[ testCase "parser requires lexer output" $
testParserRequiresLexerOutput
, testCase "parser succeeds after lexer" $
testParserSucceedsAfterLexer
]
, testGroup "Elaborator Stage"
[ testCase "elaborator requires parser output" $
testElaboratorRequiresParserOutput
, testCase "elaborator succeeds after parser" $
testElaboratorSucceedsAfterParser
]
, testGroup "Type Checker Stage"
[ testCase "type checker requires elaborated output" $
testTypeCheckerRequiresElaborated
, testCase "type checker succeeds after elaboration" $
testTypeCheckerSucceedsAfterElaboration
]
, testGroup "Proof Checker Stage"
[ testCase "proof checker requires type checked output" $
testProofCheckerRequiresTypeChecked
, testCase "proof checker succeeds after type check" $
testProofCheckerSucceedsAfterTypeCheck
]
, testGroup "Code Gen Stage"
[ testCase "code gen requires proof checked output" $
testCodeGenRequiresProofChecked
, testCase "code gen succeeds after proof check" $
testCodeGenSucceedsAfterProofCheck
]
, testGroup "Error Handling"
[ testCase "pipeline halts on first error" $
testPipelineHaltsOnError
, testCase "error includes category" $
testErrorIncludesCategory
, testCase "error message is present" $
testErrorMessagePresent
]
, testGroup "Determinism"
[ testCase "same input produces same lexer output" $
testLexerDeterminism
, testCase "same source produces consistent results" $
testPipelineDeterminism
]
]
-- ============================================================================
-- LEXER TESTS
-- ============================================================================
testLexerAcceptsNonEmpty :: Assertion
testLexerAcceptsNonEmpty = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "assert x = x"
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runLexer state
case result of
Right () -> pstLexedTokens newState @?= Just "tokens"
Left _ -> fail "Lexer rejected non-empty source"
testLexerRejectsEmpty :: Assertion
testLexerRejectsEmpty = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = ""
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runLexer state
case result of
Left _ -> return ()
Right () -> fail "Lexer accepted empty source"
testLexerPreservesSource :: Assertion
testLexerPreservesSource = do
let source = "assert x = x : Bool"
state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = source
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, _) <- runLexer state
pstSourceCode newState @?= source
testLexerDeterminism :: Assertion
testLexerDeterminism = do
let source = "assert x = x : Bool"
state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = source
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result1) <- runLexer state
(_, result2) <- runLexer state
result1 @?= result2
-- ============================================================================
-- PARSER TESTS
-- ============================================================================
testParserRequiresLexerOutput :: Assertion
testParserRequiresLexerOutput = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runParser state
case result of
Left _ -> return ()
Right () -> fail "Parser succeeded without lexer output"
testParserSucceedsAfterLexer :: Assertion
testParserSucceedsAfterLexer = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runParser state
case result of
Right () -> pstParsedAST newState @?= Just "ast"
Left _ -> fail "Parser failed after lexer"
-- ============================================================================
-- ELABORATOR TESTS
-- ============================================================================
testElaboratorRequiresParserOutput :: Assertion
testElaboratorRequiresParserOutput = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runElaborator state
case result of
Left _ -> return ()
Right () -> fail "Elaborator succeeded without parser output"
testElaboratorSucceedsAfterParser :: Assertion
testElaboratorSucceedsAfterParser = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runElaborator state
case result of
Right () -> pstElaborated newState @?= Just "core_ast"
Left _ -> fail "Elaborator failed after parser"
-- ============================================================================
-- TYPE CHECKER TESTS
-- ============================================================================
testTypeCheckerRequiresElaborated :: Assertion
testTypeCheckerRequiresElaborated = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runTypeChecker state
case result of
Left _ -> return ()
Right () -> fail "Type checker succeeded without elaborated output"
testTypeCheckerSucceedsAfterElaboration :: Assertion
testTypeCheckerSucceedsAfterElaboration = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Just "core_ast"
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runTypeChecker state
case result of
Right () -> pstTypeChecked newState @?= Just "typed_ast"
Left _ -> fail "Type checker failed after elaboration"
-- ============================================================================
-- PROOF CHECKER TESTS
-- ============================================================================
testProofCheckerRequiresTypeChecked :: Assertion
testProofCheckerRequiresTypeChecked = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Just "core_ast"
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runProofChecker state
case result of
Left _ -> return ()
Right () -> fail "Proof checker succeeded without type checked output"
testProofCheckerSucceedsAfterTypeCheck :: Assertion
testProofCheckerSucceedsAfterTypeCheck = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Just "core_ast"
, pstTypeChecked = Just "typed_ast"
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runProofChecker state
case result of
Right () -> pstProofChecked newState @?= Just "verified_proofs"
Left _ -> fail "Proof checker failed after type check"
-- ============================================================================
-- CODE GEN TESTS
-- ============================================================================
testCodeGenRequiresProofChecked :: Assertion
testCodeGenRequiresProofChecked = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Just "core_ast"
, pstTypeChecked = Just "typed_ast"
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runCodeGen state
case result of
Left _ -> return ()
Right () -> fail "Code gen succeeded without proof checked output"
testCodeGenSucceedsAfterProofCheck :: Assertion
testCodeGenSucceedsAfterProofCheck = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = "test"
, pstLexedTokens = Just "tokens"
, pstParsedAST = Just "ast"
, pstElaborated = Just "core_ast"
, pstTypeChecked = Just "typed_ast"
, pstProofChecked = Just "verified_proofs"
, pstCodeGen = Nothing
, pstErrors = []
}
(newState, result) <- runCodeGen state
case result of
Right () -> pstCodeGen newState @?= Just "haskell_code"
Left _ -> fail "Code gen failed after proof check"
-- ============================================================================
-- ERROR HANDLING TESTS
-- ============================================================================
testPipelineHaltsOnError :: Assertion
testPipelineHaltsOnError = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = ""
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runLexer state
case result of
Left _ -> return () -- Error caught, pipeline halted
Right () -> fail "Pipeline did not halt on error"
testErrorIncludesCategory :: Assertion
testErrorIncludesCategory = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = ""
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runLexer state
case result of
Left err -> return () -- Error has category from ErrorDetail
Right () -> fail "Expected error"
testErrorMessagePresent :: Assertion
testErrorMessagePresent = do
let state = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = ""
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
(_, result) <- runLexer state
case result of
Left err -> (not . null) (edMessage err) @?= True
Right () -> fail "Expected error"
-- ============================================================================
-- DETERMINISM TESTS
-- ============================================================================
testPipelineDeterminism :: Assertion
testPipelineDeterminism = do
let source = "assert x = x : Bool"
state1 = PipelineState
{ pstFile = "test.as"
, pstModule = Nothing
, pstSourceCode = source
, pstLexedTokens = Nothing
, pstParsedAST = Nothing
, pstElaborated = Nothing
, pstTypeChecked = Nothing
, pstProofChecked = Nothing
, pstCodeGen = Nothing
, pstErrors = []
}
state2 = state1
(newState1, result1) <- runLexer state1
(newState2, result2) <- runLexer state2
result1 @?= result2
pstLexedTokens newState1 @?= pstLexedTokens newState2
|