+ .tmp.code:20:12: error: unrecognised number: 00123
+
+## Tests for type errors
+
+Type error don't cause parsing to abort, so we can fit many in the
+one test program. Some type errors are found during the parse, others
+during type analysis which doesn't run if parsing failed. So we cannot
+fit everything in one.
+
+These programs were generated by looking for the
+various places that `type_err()` are called.
+
+###### test list
+ oceani_failing_tests += type_err1 type_err2 type_err3 type_err4
+
+###### test: type_err1
+
+ func main()
+ print "hello" ++ 5, 5 ++ "hello"
+
+ b ::= 3
+ b = b + 1
+
+ if 3 * 4 and not True: print "Weird"
+
+###### output: type_err1
+ .tmp.code:3:25: error: expected string found number
+ .tmp.code:3:28: error: expected string found number
+ .tmp.code:6:8: error: Cannot assign to a constant: b
+ .tmp.code:5:8: info: name was defined as a constant here
+ .tmp.code:6:8: error: Cannot assign to a constant: b
+ .tmp.code:5:8: info: name was defined as a constant here
+ .tmp.code:8:11: error: Arithmetic returns number but Boolean expected
+ oceani: type error in program - not running.
+
+###### test: type_err2
+
+ func main()
+ a := 1
+ a := 2
+ a ::= 3
+ a:number = 4
+ a ::number = 5
+ c:
+
+###### output: type_err2
+ .tmp.code:4:8: error: variable 'a' redeclared
+ .tmp.code:3:8: info: this is where 'a' was first declared
+ .tmp.code:5:8: error: variable 'a' redeclared
+ .tmp.code:3:8: info: this is where 'a' was first declared
+ .tmp.code:6:8: error: variable 'a' redeclared
+ .tmp.code:3:8: info: this is where 'a' was first declared
+ .tmp.code:7:8: error: variable 'a' redeclared
+ .tmp.code:3:8: info: this is where 'a' was first declared
+ .tmp.code:8:8: Variable declared with no type or value: c
+
+###### test: type_err3
+
+ struct foo
+ a: number
+ b:string = "hello"
+
+ func main()
+ c := "hello"
+ c = c + 1
+ c = "hello" ++ (True and False)
+ c = 4 < 5
+ print 45 + ( "Hello" ++ "there")
+ c[5] = 1
+
+ while
+ use 1
+ use True
+ use "Hello"
+ do
+ print
+ case 1: print "one"
+ case "Hello": print "Hello"
+
+ a1:[5]number; a2:[5]number; a3:[10]number; a4:[5]string
+ a1 = a2
+ a1 = a3
+ a1 = a4
+ a1[2] = "hello"
+ a4[1] = True
+ c = a2[3]
+
+ bar:foo
+ foo.c = 43
+ print c.foo
+ print bar.c
+ print bar.b + 42
+
+ // trigger 'labels not permitted' error message
+ while 1 if True else False:
+ print
+ case 2: print "two"
+
+###### output: type_err3
+ .tmp.code:8:12: error: expected number but variable 'c' is string
+ .tmp.code:7:8: info: this is where 'c' was set to string
+ .tmp.code:8:12: error: Arithmetic returns number but string expected
+ .tmp.code:7:8: info: variable 'c' was set as string here.
+ .tmp.code:9:24: error: Boolean operation found where string expected
+ .tmp.code:10:12: error: Comparison returns Boolean but string expected
+ .tmp.code:7:8: info: variable 'c' was set as string here.
+ .tmp.code:11:21: error: Concat returns string but number expected
+ .tmp.code:12:8: error: string cannot be indexed
+ .tmp.code:12:8: error: string cannot be indexed
+ .tmp.code:21:13: error: expected number found string
+ .tmp.code:17:16: error: expected number, found string
+ .tmp.code:24:8: error: cannot assign value of type [5]number
+ .tmp.code:25:13: error: expected [5]number but variable 'a3' is [10]number
+ .tmp.code:23:36: info: this is where 'a3' was set to [10]number
+ .tmp.code:25:8: error: cannot assign value of type [5]number
+ .tmp.code:26:13: error: expected [5]number but variable 'a4' is [5]string
+ .tmp.code:23:51: info: this is where 'a4' was set to [5]string
+ .tmp.code:26:8: error: cannot assign value of type [5]number
+ .tmp.code:27:16: error: expected number found string
+ .tmp.code:28:16: error: expected string found Boolean
+ .tmp.code:29:12: error: have number but need string
+ .tmp.code:7:8: info: variable 'c' was set as string here.
+ .tmp.code:32:8: error: variable used but not declared: foo
+ .tmp.code:32:8: error: field reference attempted on none, not a struct
+ .tmp.code:32:16: error: expected none found number
+ .tmp.code:33:14: error: field reference attempted on string, not a struct
+ .tmp.code:34:14: error: cannot find requested field in foo
+ .tmp.code:35:17: error: have string but need number
+ .tmp.code:38:29: error: expected number (labels not permitted) found Boolean
+ oceani: type error in program - not running.
+
+###### test: type_err4
+ func main()
+ a:=1; b=2; c::=3
+ print a, b, c
+
+###### output: type_err4
+ .tmp.code:3:14: error: variable used but not declared: b
+ .tmp.code:3:16: error: expected none found number
+ .tmp.code:3:14: info: variable 'b' was set as none here.
+ oceani: type error in program - not running.
+
+###### test list
+ oceani_failing_tests += type_err_const type_err_const1 missing_program bad_main
+
+###### test: type_err_const
+ const
+ foo :: number = 45
+ bar ::= "string" + 56
+ const
+ bar ::= "baz"
+ func main()
+ foo := 4
+ print foo, bar
+
+ // trigger duplicate-main error
+ func main()
+ foo := 6
+ print bar, foo
+
+###### output: type_err_const
+ .tmp.code:4:16: error: expected number found string
+ .tmp.code:6:8: error: name already declared: bar
+ .tmp.code:4:8: info: this is where 'bar' was first declared
+ .tmp.code:8:8: error: variable 'foo' redeclared
+ .tmp.code:3:8: info: this is where 'foo' was first declared
+ .tmp.code:12:5: error: function 'main' redeclared
+ .tmp.code:7:5: info: this is where 'main' was first declared
+ .tmp.code:13:8: error: variable 'foo' redeclared
+ .tmp.code:3:8: info: this is where 'foo' was first declared
+
+###### test: type_err_const1
+ const
+ foo : number = 45
+ bar := "string"
+ func main()
+ foo := 4
+ print foo, bar
+
+###### output: type_err_const1
+ .tmp.code:3:12: Syntax error in constant: :
+ .tmp.code:4:12: Syntax error in constant: :
+
+###### test: missing_program
+ const
+ foo::="bar"
+
+###### output: missing_program
+ oceani: no main function found.
+
+###### test: bad_main
+ func main(foo:string)
+ print foo
+
+###### output: bad_main
+ .tmp.code:??:??: error: expected []string but variable 'foo' is string
+ .tmp.code:??:??: info: this is where 'NOTVAR' was set to string
+ oceani: main has wrong type.
+
+Test for type errors with functions
+
+###### test list
+ oceani_failing_tests += func_err_args func_err_redeclare
+
+###### test: func_err_args
+
+ func test1(a:number; b:string; c:[3]Boolean)
+ print a, b, c[1]
+
+ func test2(a:number; b:string; c:[3]Boolean)
+ print a, b, c[1]
+
+ func test3()
+ # use undefined names
+ print a, z
+
+ func main()
+ truth:[3]Boolean
+ truth[1] = True
+ test1(1,"hello")
+ test1("hello",1)
+ test1(1, "two", truth)
+ test1(1, 2, truth)
+ test1(1, "lo", truth, 4)
+ print test(), test1(1,2,3)
+ if test1 == test2:
+ pass
+
+ func test4(a:number):string
+ use a * a
+
+ func test5(a:number):string
+ print a
+
+ struct foo
+ a: number
+ b:string = "hello"
+
+ func test6(a:number):foo
+ b:foo
+ b.a = a
+ use b
+
+###### output: func_err_args
+ .tmp.code:34:5: error: function cannot return value of type foo
+ .tmp.code:28:14: error: expected string, found none
+ .tmp.code:25:8: error: expected string, found number
+ .tmp.code:15:14: error: insufficient arguments to function.
+ .tmp.code:16:14: error: expected number found string
+ .tmp.code:16:22: error: expected string found number
+ .tmp.code:16:14: error: insufficient arguments to function.
+ .tmp.code:18:17: error: expected string found number
+ .tmp.code:19:14: error: too many arguments to function.
+ .tmp.code:20:14: error: attempt to call a non-function.
+ .tmp.code:20:32: error: expected string found number
+ .tmp.code:20:28: error: insufficient arguments to function.
+ .tmp.code:21:20: error: expected *invalid*type* but variable 'test2' is *invalid*type*
+ .tmp.code:??:??: info: this is where 'NOTVAR' was set to *invalid*type*
+ .tmp.code:10:14: error: variable used but not declared: a
+ .tmp.code:10:17: error: variable used but not declared: z
+ oceani: type error in program - not running.
+
+###### test: func_err_redeclare
+
+ func test1(a:number; b:string; c:[3]Boolean)
+ print a, b, c[1]
+
+ func test1
+ do
+ pass
+
+ func test1
+ b:Boolean
+ do
+ pass
+
+###### output: func_err_redeclare
+ .tmp.code:5:5: error: function 'test1' redeclared
+ .tmp.code:2:5: info: this is where 'test1' was first declared
+ .tmp.code:9:5: error: function 'test1' redeclared
+ .tmp.code:2:5: info: this is where 'test1' was first declared