1+ # The following collects coverage information from a set of given "checks" and
2+ # provides a coverage report showing how those "checks" cover a set of given
3+ # "mixLibraries".
14{ stdenv , lib , haskellLib , pkgs } :
25
3- # Name of the coverage report, which should be unique
6+ # Name of the coverage report, which should be unique.
47{ name
5- # Library to check coverage of
6- , library
7- # List of check derivations that generate coverage
8- , checks
9- # List of other libraries to include in the coverage report. The
10- # default value if just the derivation provided as the `library`
11- # argument. Use a larger list of libraries if you would like the tests
12- # of one local package to generate coverage for another.
13- , mixLibraries ? [ library ]
14- # hack for project-less projects
15- , ghc ? library . project . pkg-set . config . ghc . package
8+ # List of check derivations that generate coverage.
9+ , checks ? [ ]
10+ # List of libraries to include in the coverage report. If one of the above
11+ # checks generates coverage for a particular library, coverage will only
12+ # be included if that library is in this list.
13+ , mixLibraries ? [ ]
14+ # Hack for project-less projects.
15+ , ghc ? if mixLibraries == [ ] then null else ( lib . head mixLibraries ) . project . pkg-set . config . ghc . package
1616} :
1717
1818let
2626in pkgs . runCommand ( name + "-coverage-report" )
2727 ( { nativeBuildInputs = [ ( ghc . buildGHC or ghc ) pkgs . buildPackages . zip ] ;
2828 passthru = {
29- inherit name library checks ;
29+ inherit name checks mixLibraries ;
3030 } ;
3131 # HPC will fail if the Haskell file contains non-ASCII characters,
3232 # unless our locale is set correctly. This has been fixed, but we
@@ -92,56 +92,83 @@ in pkgs.runCommand (name + "-coverage-report")
9292 }
9393
9494 function findModules() {
95- local searchDir=$2
95+ local -n result=$1
96+ local -n searchDirs=$2
9697 local pattern=$3
9798
98- pushd $searchDir
99- mapfile -d $'\0' $1 < <(find ./ -type f \
100- -wholename "$pattern" -not -name "Paths*" \
101- -exec basename {} \; \
102- | sed "s/\.mix$//" \
103- | tr "\n" "\0")
104- popd
99+ for dir in "'' ${searchDirs[@]}"; do
100+ pushd $dir
101+ local temp=()
102+ mapfile -d $'\0' temp < <(find ./ -type f \
103+ -wholename "$pattern" -not -name "Paths*" \
104+ -exec basename {} \; \
105+ | sed "s/\.mix$//" \
106+ | tr "\n" "\0")
107+ result+=("'' ${temp[@]}")
108+ popd
109+ done
105110 }
106111
107- local mixDirs=${ toBashArray mixDirs }
108-
109112 mkdir -p $out/nix-support
110- mkdir -p $out/share/hpc/vanilla/mix/${ name }
113+ mkdir -p $out/share/hpc/vanilla/mix/
111114 mkdir -p $out/share/hpc/vanilla/tix/${ name }
112115 mkdir -p $out/share/hpc/vanilla/html/${ name }
113116
114- # Copy over mix files verbatim
117+ local srcDirs=${ toBashArray srcDirs }
118+ local mixDirs=${ toBashArray mixDirs }
119+
120+ # Copy out mix files used for this report
115121 for dir in "'' ${mixDirs[@]}"; do
116122 if [ -d "$dir" ]; then
117123 cp -R "$dir"/* $out/share/hpc/vanilla/mix/${ name }
118124 fi
119125 done
120126
121- local srcDirs=${ toBashArray srcDirs }
122- local allMixModules=()
123- local pkgMixModules=()
124-
125- # The behaviour of stack coverage reports is to provide tix files
126- # that include coverage information for every local package, but
127- # to provide HTML reports that only include coverage info for the
128- # current package. We emulate the same behaviour here. If the user
129- # includes all local packages in the mix libraries argument, they
130- # will get a coverage report very similar to stack.
131-
132- # All mix modules
133- findModules allMixModules "$out/share/hpc/vanilla/mix/${ name } " "*.mix"
134- # Only mix modules corresponding to this package
135- findModules pkgMixModules "$out/share/hpc/vanilla/mix/${ name } " "*${ name } */*.mix"
136-
137- # For each test
127+ local mixModules=()
128+ # Mix modules for all packages in "mixLibraries"
129+ findModules mixModules mixDirs "*.mix"
130+
131+ # We need to make a distinction between library "exposed-modules" and
132+ # "other-modules" used in test suites:
133+ # - "exposed-modules" are addressed as "$library-$version-$hash/module"
134+ # - "other-modules" are addressed as "module"
135+ #
136+ # This complicates the code required to find the mix modules. For a given mix directory:
137+ #
138+ # mix
139+ # └── ntp-client-0.0.1
140+ # └── ntp-client-0.0.1-gYjRsBHUCaHX7ENcjHnw5
141+ # ├── Network.NTP.Client.mix
142+ # ├── Network.NTP.Client.Packet.mix
143+ # └── Network.NTP.Client.Query.mix
144+ #
145+ # Iff ntp-client uses "other-modules" in a test suite, both:
146+ # - "mix/ntp-client-0.0.1", and
147+ # - "mix/ntp-client-0.0.1/ntp-client-0.0.1-gYjRsBHUCaHX7ENcjHnw5"
148+ # need to be provided to hpc as search directories.
149+ #
150+ # I'd prefer to just exclude "other-modules", but I can't think of an easy
151+ # way to do that in bash.
152+ #
153+ # Here we expand the search dirs and modify the mix dirs accordingly:
154+ for dir in "'' ${mixDirs[@]}"; do
155+ local otherModulesSearchDirs=()
156+ # Simply consider any directory with a mix file as a search directory.
157+ mapfile -d $'\0' otherModulesSearchDirs < <(find $dir -type f \
158+ -wholename "*.mix" \
159+ -exec dirname {} \; \
160+ | uniq \
161+ | tr "\n" "\0")
162+ mixDirs+=("'' ${otherModulesSearchDirs[@]}")
163+ done
164+
138165 local tixFiles=()
139166 ${ lib . concatStringsSep "\n " ( builtins . map ( check : ''
140167 if [ -d "${ check } /share/hpc/vanilla/tix" ]; then
141168 pushd ${ check } /share/hpc/vanilla/tix
142169
143170 tixFile="$(find . -iwholename "*.tix" -type f -print -quit)"
144- local newTixFile=$out/share/hpc/vanilla/tix/${ name } /"$tixFile"
171+ local newTixFile=$out/share/hpc/vanilla/tix/${ check . name } /"$(basename $ tixFile) "
145172
146173 mkdir -p "$(dirname $newTixFile)"
147174 # Copy over the tix file verbatim
@@ -150,24 +177,25 @@ in pkgs.runCommand (name + "-coverage-report")
150177 # Add the tix file to our list
151178 tixFiles+=("$newTixFile")
152179
153- # Create a coverage report for *just that test*
154- markup srcDirs mixDirs pkgMixModules "$out/share/hpc/vanilla/html/${ name } /${ check . exeName } /" "$newTixFile"
180+ # Create a coverage report for *just that check* affecting any of the
181+ # "mixLibraries"
182+ markup srcDirs mixDirs mixModules "$out/share/hpc/vanilla/html/${ check . name } /" "$newTixFile"
155183
156184 popd
157185 fi
158186 '' ) checks )
159187 }
160188
161- # Sum tix files to create a tix file with all relevant tix
162- # information and markup a HTML report from this info.
189+ # Sum tix files to create a tix file with tix information from all tests in
190+ # the package and markup a HTML report from this info.
163191 local sumTixFile="$out/share/hpc/vanilla/tix/${ name } /${ name } .tix"
164192 local markupOutDir="$out/share/hpc/vanilla/html/${ name } "
165193
166- # Sum all of our tix file, including modules from any local package
167- sumTix allMixModules tixFiles "$sumTixFile"
194+ # Sum all of our tix files
195+ sumTix mixModules tixFiles "$sumTixFile"
168196
169- # Markup a HTML report, included modules from only this package
170- markup srcDirs mixDirs pkgMixModules "$markupOutDir" "$sumTixFile"
197+ # Markup a HTML report
198+ markup srcDirs mixDirs mixModules "$markupOutDir" "$sumTixFile"
171199
172200 # Provide a HTML zipfile and Hydra links
173201 ( cd "$markupOutDir" ; zip -r $out/share/hpc/vanilla/${ name } -html.zip . )
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