Fix tests on Julia master

Author: timholy

src/CodeTracking.jl

@@ -8,6 +8,10 @@ using InteractiveUtils
 
 export whereis, definition, pkgfiles, signatures_at
 
+# More recent Julia versions assign the line number to the line with the function declaration,
+# not the first non-comment line of the body.
+const line_is_decl = VERSION >= v"1.5.0-DEV.567"
+
 include("pkgfiles.jl")
 include("utils.jl")
 
@@ -44,8 +48,9 @@ const juliastdlib = joinpath("julia", "stdlib", "v$(VERSION.major).$(VERSION.min
 """
     filepath, line = whereis(method::Method)
 
-Return the file and line of the definition of `method`. `line`
-is the first line of the method's body.
+Return the file and line of the definition of `method`. The meaning of `line`
+depends on the Julia version: on Julia 1.5 and higher it is the line number of
+the method declaration, otherwise it is the first line of the method's body.
 """
 function whereis(method::Method)
     file, line = String(method.file), method.line
@@ -111,7 +116,8 @@ end
     sigs = signatures_at(filename, line)
 
 Return the signatures of all methods whose definition spans the specified location.
-`line` must correspond to a line in the method body (not the signature or final `end`).
+Prior to Julia 1.5, `line` must correspond to a line in the method body
+(not the signature or final `end`).
 
 Returns `nothing` if there are no methods at that location.
 """

test/Project.toml

@@ -0,0 +1,4 @@
+[deps]
+ColorTypes = "3da002f7-5984-5a60-b8a6-cbb66c0b333f"
+InteractiveUtils = "b77e0a4c-d291-57a0-90e8-8db25a27a240"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"

test/runtests.jl

@@ -4,14 +4,16 @@ using CodeTracking
 using Test, InteractiveUtils
 # Note: ColorTypes needs to be installed, but note the intentional absence of `using ColorTypes`
 
+using CodeTracking: line_is_decl
+
 isdefined(Main, :Revise) ? includet("script.jl") : include("script.jl")
 
 @testset "CodeTracking.jl" begin
     m = first(methods(f1))
     file, line = whereis(m)
     scriptpath = normpath(joinpath(@__DIR__, "script.jl"))
     @test file == scriptpath
-    @test line == 4
+    @test line == (line_is_decl ? 2 : 4)
     trace = try
         call_throws()
     catch