smalltalk: SUnit port (TestCase/TestSuite/TestResult/TestFailure) + 19 tests

lib/smalltalk/tests/sunit.sx

@@ -0,0 +1,198 @@
+;; SUnit port tests. Loads `lib/smalltalk/sunit.sx` (which itself calls
+;; smalltalk-load to install TestCase/TestSuite/TestResult/TestFailure)
+;; and exercises the framework on small Smalltalk-defined cases.
+
+(set! st-test-pass 0)
+(set! st-test-fail 0)
+(set! st-test-fails (list))
+
+;; test.sh loads lib/smalltalk/sunit.sx for us BEFORE this file runs
+;; (nested SX loads do not propagate top-level forms reliably, so the
+;; bootstrap chain is concentrated in test.sh). The SUnit classes are
+;; already present in the class table at this point.
+
+(define ev (fn (src) (smalltalk-eval src)))
+(define evp (fn (src) (smalltalk-eval-program src)))
+
+;; ── 1. Classes installed ──
+(st-test "TestCase exists"      (st-class-exists? "TestCase")    true)
+(st-test "TestSuite exists"     (st-class-exists? "TestSuite")   true)
+(st-test "TestResult exists"    (st-class-exists? "TestResult")  true)
+(st-test "TestFailure < Error"
+  (st-class-inherits-from? "TestFailure" "Error") true)
+
+;; ── 2. A subclass with one passing test runs cleanly ──
+(smalltalk-load
+  "TestCase subclass: #PassingCase
+     instanceVariableNames: ''!
+
+   !PassingCase methodsFor: 'tests'!
+   testOnePlusOne self assert: 1 + 1 = 2! !")
+
+(st-test "passing test runs and counts as pass"
+  (evp
+    "| suite r |
+     suite := PassingCase suiteForAll: #(#testOnePlusOne).
+     r := suite run.
+     ^ r passCount")
+  1)
+
+(st-test "passing test has no failures"
+  (evp
+    "| suite r |
+     suite := PassingCase suiteForAll: #(#testOnePlusOne).
+     r := suite run.
+     ^ r failureCount")
+  0)
+
+;; ── 3. A subclass with a failing assert: increments failures ──
+(smalltalk-load
+  "TestCase subclass: #FailingCase
+     instanceVariableNames: ''!
+
+   !FailingCase methodsFor: 'tests'!
+   testFalse self assert: false!
+   testEquals self assert: 1 + 1 equals: 3! !")
+
+(st-test "assert: false bumps failureCount"
+  (evp
+    "| suite r |
+     suite := FailingCase suiteForAll: #(#testFalse).
+     r := suite run.
+     ^ r failureCount")
+  1)
+
+(st-test "assert:equals: with mismatch fails"
+  (evp
+    "| suite r |
+     suite := FailingCase suiteForAll: #(#testEquals).
+     r := suite run.
+     ^ r failureCount")
+  1)
+
+(st-test "failure messageText captured"
+  (evp
+    "| suite r rec |
+     suite := FailingCase suiteForAll: #(#testEquals).
+     r := suite run.
+     rec := r failures at: 1.
+     ^ rec at: 2")
+  "expected 3 but got 2")
+
+;; ── 4. Mixed pass/fail counts add up ──
+(smalltalk-load
+  "TestCase subclass: #MixedCase
+     instanceVariableNames: ''!
+
+   !MixedCase methodsFor: 'tests'!
+   testGood self assert: true!
+   testBad self assert: false!
+   testAlsoGood self assert: 2 > 1! !")
+
+(st-test "mixed suite — totalCount"
+  (evp
+    "| s r |
+     s := MixedCase suiteForAll: #(#testGood #testBad #testAlsoGood).
+     r := s run.
+     ^ r totalCount")
+  3)
+
+(st-test "mixed suite — passCount"
+  (evp
+    "| s r |
+     s := MixedCase suiteForAll: #(#testGood #testBad #testAlsoGood).
+     r := s run.
+     ^ r passCount")
+  2)
+
+(st-test "mixed suite — failureCount"
+  (evp
+    "| s r |
+     s := MixedCase suiteForAll: #(#testGood #testBad #testAlsoGood).
+     r := s run.
+     ^ r failureCount")
+  1)
+
+(st-test "allPassed false on mix"
+  (evp
+    "| s r |
+     s := MixedCase suiteForAll: #(#testGood #testBad #testAlsoGood).
+     r := s run.
+     ^ r allPassed")
+  false)
+
+(st-test "allPassed true with only passes"
+  (evp
+    "| s r |
+     s := MixedCase suiteForAll: #(#testGood #testAlsoGood).
+     r := s run.
+     ^ r allPassed")
+  true)
+
+;; ── 5. setUp / tearDown ──
+(smalltalk-load
+  "TestCase subclass: #FixtureCase
+     instanceVariableNames: 'value'!
+
+   !FixtureCase methodsFor: 'fixture'!
+   setUp value := 42. ^ self!
+   tearDown ^ self! !
+
+   !FixtureCase methodsFor: 'tests'!
+   testValueIs42 self assert: value = 42! !")
+
+(st-test "setUp ran before test"
+  (evp
+    "| s r |
+     s := FixtureCase suiteForAll: #(#testValueIs42).
+     r := s run.
+     ^ r passCount")
+  1)
+
+;; ── 6. should:raise: and shouldnt:raise: ──
+(smalltalk-load
+  "TestCase subclass: #RaiseCase
+     instanceVariableNames: ''!
+
+   !RaiseCase methodsFor: 'tests'!
+   testShouldRaise
+     self should: [Error signal: 'boom'] raise: Error!
+
+   testShouldRaiseFails
+     self should: [42] raise: Error!
+
+   testShouldntRaise
+     self shouldnt: [42] raise: Error! !")
+
+(st-test "should:raise: catches matching"
+  (evp
+    "| r |
+     r := (RaiseCase suiteForAll: #(#testShouldRaise)) run.
+     ^ r passCount") 1)
+
+(st-test "should:raise: fails when no exception"
+  (evp
+    "| r |
+     r := (RaiseCase suiteForAll: #(#testShouldRaiseFails)) run.
+     ^ r failureCount") 1)
+
+(st-test "shouldnt:raise: passes when nothing thrown"
+  (evp
+    "| r |
+     r := (RaiseCase suiteForAll: #(#testShouldntRaise)) run.
+     ^ r passCount") 1)
+
+;; ── 7. summary string uses format: ──
+(st-test "summary contains pass count"
+  (let
+    ((s (evp
+          "| s r |
+           s := MixedCase suiteForAll: #(#testGood #testBad).
+           r := s run.
+           ^ r summary")))
+    (cond
+      ((not (string? s)) false)
+      (else (> (len s) 0))))
+  true)
+
+(list st-test-pass st-test-fail)