8 files changed, 210 insertions, 0 deletions
diff --git a/tests/assert/config.nims b/tests/assert/config.nims
new file mode 100644
index 000000000..f1cffeb6c
--- /dev/null
+++ b/tests/assert/config.nims
@@ -0,0 +1 @@
+--excessiveStackTrace:on
diff --git a/tests/assert/panicoverride.nim b/tests/assert/panicoverride.nim
new file mode 100644
index 000000000..53ad64215
--- /dev/null
+++ b/tests/assert/panicoverride.nim
@@ -0,0 +1,15 @@
+# panicoverride.nim
+
+proc printf(fmt: cstring) {.varargs, importc, header:"stdio.h".}
+proc exit(code: cint) {.importc, header:"stdlib.h".}
+
+{.push stack_trace: off, profiler:off.}
+
+proc rawoutput(s: cstring) =
+  printf("RAW: %s\n", s)
+  
+proc panic(s: cstring) {.noreturn.} =
+  printf("PANIC: %s\n", s)
+  exit(0)
+
+{.pop.}
\ No newline at end of file
diff --git a/tests/assert/t21195.nim b/tests/assert/t21195.nim
new file mode 100644
index 000000000..b690d22a0
--- /dev/null
+++ b/tests/assert/t21195.nim
@@ -0,0 +1,6 @@
+discard """
+  matrix: "--verbosity:0 --os:standalone --mm:none"
+"""
+# bug #21195
+var n = 11
+assert(n == 12)
diff --git a/tests/assert/tassert.nim b/tests/assert/tassert.nim
new file mode 100644
index 000000000..a14fec317
--- /dev/null
+++ b/tests/assert/tassert.nim
@@ -0,0 +1,20 @@
+discard """
+  outputsub: "assertion failure!this shall be always written"
+  exitcode: "1"
+"""
+# test assert and exception handling
+
+proc callB() = assert(false)
+proc callA() = callB()
+proc callC() = callA()
+
+try:
+  callC()
+except AssertionDefect:
+  write(stdout, "assertion failure!")
+except:
+  write(stdout, "unknown exception!")
+finally:
+  system.write(stdout, "this shall be always written")
+
+assert(false) #OUT assertion failure!this shall be always written
diff --git a/tests/assert/tassert2.nim b/tests/assert/tassert2.nim
new file mode 100644
index 000000000..e32ab72e1
--- /dev/null
+++ b/tests/assert/tassert2.nim
@@ -0,0 +1,111 @@
+discard """
+  output: '''
+`false` first assertion from bar
+`false` second assertion from bar
+-1
+'''
+"""
+from strutils import endsWith
+
+type
+  TLineInfo = tuple[filename: string, line: int, column: int]
+  TMyError = object of Exception
+    lineinfo: TLineInfo
+  EMyError = ref TMyError
+
+
+# NOTE: when entering newlines, adjust `expectedEnd` outputs
+
+try:
+  doAssert(false, "msg1") # doAssert test
+except AssertionDefect as e:
+  assert e.msg.endsWith "tassert2.nim(20, 11) `false` msg1"
+
+try:
+  assert false # assert test with no msg
+except AssertionDefect as e:
+  assert e.msg.endsWith "tassert2.nim(25, 3) `false` "
+
+try:
+  let a = 1
+  doAssert(a+a==1) # assert test with Ast expression
+  # BUG: const folding would make "1+1==1" appear as `false` in
+  # assert message
+except AssertionDefect as e:
+  assert e.msg.endsWith "`a + a == 1` "
+
+try:
+  let a = 1
+  doAssert a+a==1 # ditto with `doAssert` and no parens
+except AssertionDefect as e:
+  assert e.msg.endsWith "`a + a == 1` "
+
+proc fooStatic() =
+  # protect against https://github.com/nim-lang/Nim/issues/8758
+  static: doAssert(true)
+fooStatic()
+
+
+
+
+
+block:
+  # scope-wide policy to change the failed assert
+  # exception type in order to include a lineinfo
+  onFailedAssert(msg):
+    var e = new(TMyError)
+    e.msg = msg
+    e.lineinfo = instantiationInfo(-2)
+    raise e
+
+  proc foo =
+    assert(false, "assertion from foo")
+
+
+  proc bar: int =
+    # local overrides that are active only in this proc
+    onFailedAssert(msg):
+      echo msg[^32..^1]
+
+    assert(false, "first assertion from bar")
+
+    onFailedAssert(msg):
+      echo msg[^33..^1]
+      return -1
+
+    assert(false, "second assertion from bar")
+    return 10
+
+  echo(bar())
+
+  try:
+    foo()
+  except:
+    let e = EMyError(getCurrentException())
+    assert e.msg.endsWith "tassert2.nim(62, 11) `false` assertion from foo"
+
+block: ## checks for issue https://github.com/nim-lang/Nim/issues/8518
+  template fun(a: string): string =
+      const pattern = a & a
+      pattern
+
+  try:
+    doAssert fun("foo1") == fun("foo2"), "mymsg"
+  except AssertionDefect as e:
+    # used to expand out the template instantiaiton, sometimes filling hundreds of lines
+    assert e.msg.endsWith ""
+
+block: ## checks for issue https://github.com/nim-lang/Nim/issues/9301
+  try:
+    doAssert 1 + 1 == 3
+  except AssertionDefect as e:
+    # used to const fold as false
+    assert e.msg.endsWith "tassert2.nim(100, 5) `1 + 1 == 3` "
+
+block: ## checks AST isn't transformed as it used to
+  let a = 1
+  try:
+    doAssert a > 1
+  except AssertionDefect as e:
+    # used to rewrite as `1 < a`
+    assert e.msg.endsWith "tassert2.nim(108, 5) `a > 1` "
diff --git a/tests/assert/tassert_c.nim b/tests/assert/tassert_c.nim
new file mode 100644
index 000000000..e3e3b8147
--- /dev/null
+++ b/tests/assert/tassert_c.nim
@@ -0,0 +1,40 @@
+discard """
+  matrix: "-d:nimPreviewSlimSystem --stackTrace:on --excessiveStackTrace:off"
+  output: '''true'''
+"""
+import std/assertions
+const expected = """
+tassert_c.nim(35)        tassert_c
+tassert_c.nim(34)        foo
+assertions.nim(*)       failedAssertImpl
+assertions.nim(*)       raiseAssert
+"""
+
+proc tmatch(x, p: string): bool =
+  var i = 0
+  var k = 0
+  while i < p.len:
+    if p[i] == '*':
+      let oldk = k
+      while k < x.len and x[k] in {'0'..'9'}: inc k
+      # no digit skipped?
+      if oldk == k: return false
+      inc i
+    elif k < x.len and p[i] == x[k]:
+      inc i
+      inc k
+    else:
+      return false
+  while k < x.len and x[k] in {' ', '\L', '\C'}: inc k
+  result = i >= p.len and k >= x.len
+
+
+try:
+  proc foo() =
+    assert(false)
+  foo()
+except AssertionDefect:
+  let e = getCurrentException()
+  let trace = e.getStackTrace
+  if tmatch(trace, expected): echo true
+  else: echo "wrong trace:\n" & trace
diff --git a/tests/assert/tunittests.nim b/tests/assert/tunittests.nim
new file mode 100644
index 000000000..de917511c
--- /dev/null
+++ b/tests/assert/tunittests.nim
@@ -0,0 +1,4 @@
+discard """
+output: ""
+"""
+import "../template/utemplates", "../closure/uclosures"
diff --git a/tests/assert/tuserassert.nim b/tests/assert/tuserassert.nim
new file mode 100644
index 000000000..274c78921
--- /dev/null
+++ b/tests/assert/tuserassert.nim
@@ -0,0 +1,13 @@
+discard """
+  output: "x == 45ugh"
+"""
+
+template myAssert(cond: untyped) =
+  when 3 <= 3:
+    let c = cond.astToStr
+    if not cond:
+      echo c, "ugh"
+
+var x = 454
+myAssert(x == 45)
+