Set up Haskell Project and run tests - haskell

Question

I'm trying to set up a Haskell project (library) with tests that I can use to work through The Haskell Road to Logic, Maths, and Programming. There are three parts that I'd like to have:
The code that comes with the book, in a subdirectory
The code I write for exercises in the book; one file per chapter
The code I write for tests; one file per chapter
I have attempted a project setup here, but am getting the following cabal error:
Resolving dependencies...
Configuring haskell-road-0.1.0.0...
Building haskell-road-0.1.0.0...
Failed to install haskell-road-0.1.0.0
Build log ( /Users/stuart/.cabal/logs/haskell-road-0.1.0.0.log ):
cabal: Entering directory '.'
Configuring haskell-road-0.1.0.0...
Building haskell-road-0.1.0.0...
Preprocessing library haskell-road-0.1.0.0...
src/Chapter1.hs:1:1:
File name does not match module name:
Saw: ‘Main’
Expected: ‘Chapter1’
cabal: Leaving directory '.'
cabal: Error: some packages failed to install:
haskell-road-0.1.0.0 failed during the building phase. The exception was:
ExitFailure 1
I'd like to be able to run $ cabal test and have all of the tests run, and have the import paths work. Any help is appreciated. I think there are probably issues with the test structure, but I've had trouble finding definitive guides on the actual setup.
EDIT: More details
src/
Chapter1.hs
Book/
GS.hs
etc....
test/
Chapter1Test.hs
MainTestSuite.hs
TestHelper.hs
haskell-book.hs:
-- Initial haskell-road.cabal generated by cabal init. For further
-- documentation, see http://haskell.org/cabal/users-guide/
-- The name of the package.
name: haskell-road
-- The package version. See the Haskell package versioning policy (PVP)
-- for standards guiding when and how versions should be incremented.
-- https://wiki.haskell.org/Package_versioning_policy
-- PVP summary: +-+------- breaking API changes
-- | | +----- non-breaking API additions
-- | | | +--- code changes with no API change
version: 0.1.0.0
-- A short (one-line) description of the package.
-- synopsis:
-- A longer description of the package.
-- description:
-- The license under which the package is released.
license: MIT
-- The file containing the license text.
license-file: LICENSE
-- The package author(s).
author: Stuart Terrett
-- An email address to which users can send suggestions, bug reports, and
-- patches.
maintainer: shterrett#gmail.com
-- A copyright notice.
-- copyright:
-- category:
build-type: Simple
-- Extra files to be distributed with the package, such as examples or a
-- README.
extra-source-files: ChangeLog.md
-- Constraint on the version of Cabal needed to build this package.
cabal-version: >=1.10
library
-- Modules exported by the library.
exposed-modules: Chapter1, Book.COR, Book.DB, Book.FAIS, Book.FCT, Book.GS, Book.Hierarchy, Book.IAR, Book.Nats, Book.POL, Book.Polynomials, Book.PowerSeries, Book.Query, Book.REL, Book.SetEq, Book.SetOrd, Book.STAL, Book.TAMO, Book.TUOLP, Book.WWN
-- Modules included in this library but not exported.
-- other-modules:
-- LANGUAGE extensions used by modules in this package.
other-extensions: FlexibleInstances
-- Other library packages from which modules are imported.
build-depends: base, random >=1.1 && <1.2, HUnit >=1.3 && <1.4
-- Directories containing source files.
hs-source-dirs: src
-- Base language which the package is written in.
default-language: Haskell2010
test-suite haskell-road-tests
type: exitcode-stdio-1.0
hs-source-dirs: tests, src
main-is: MainTestSuite.hs
build-depends: base,
HUnit,
QuickCheck,
test-framework,
test-framework-hunit,
test-framework-quickcheck2
MainTestSuite.hs
import Chapter1Test
exitProperly :: IO Counts -> IO ()
exitProperly m = do
counts <- m
exitWith $ if failures counts /= 0 || errors counts /= 0 then ExitFailure 1 else ExitSuccess
allTests::[Test]
allTests = [Chapter1Test.itRuns]
main :: IO ()
main = exitProperly (runTestTT (TestList allTests))

Answer 1

Diff of all changes:
http://lpaste.net/5997592404872396800
Specific changes you need to make:
In Chapter1.hs make sure module Chapter1 appears before the import statement:
module Chapter1 where
import ...
In each of the Book modules you need to add the prefix Book. to
each of the module statements, e.g. in Book/COR.hs:
change: module COR
to: module Book.COR
Also, any import statement will also need the Book. prefix, i.e. in Book/STAL.hs:
change: import DB
to: import Book.DB
(It might easier just to leave the book's modules at the top-level of the module name space.)
To fix this compilation error:
src/Book/IAR.hs:131:7:
No instance for (Foldable t3) arising from a use of ‘foldr’
just add {-# LANGUAGE NoMonomorphismRestriction #-} to the top of Book/IAR.hs (it should be the very first line.)
To fix this compilation error:
src/Book/FAIS.hs:14:4: Parse error in pattern: n + 1
change: f (n+1) = True : f n to f n = True : f (n-1).
This is called an n+k pattern and more info about it (and why it has been deprecated) is available here: What are "n+k patterns" and why are they banned from Haskell 2010?
In the test-suite section you have:
hs-source-dirs: tests, src
To use the code in the src directory you tests should depend on the haskell-road library instead of compiling the source code. That is, use these lines in the test-suite section:
hs-source-dirs: tests
build-depends: base, haskell-road, HUnit, ...
File test/Chapter1Test.hs needs a module statement:
module Chapter1Test where
and also fix this import statement:
-import TestHelper.testCase
+import TestHelper (testCase)
File test/MainTestSuite.hs needs these import statements:
import System.Exit
import Test.HUnit
File test/testHelper.hs needs to be renamed to test/TestHelper.hs
and also needs this import statement:
import Test.HUnit

Answer 2

Cabal has
developing packages link and cabal file content structure is described there.
By looking the error message, it seems that your haskell library source file Chapter1 starts with module Main where. It should contain module Chapter1 where, as the error message says.
Libraries should not contain main while the test-executables should, which is why you state in the cabal file the test executables with main-is.
Hope this helps! (I didn't look at the github sources, just the error message.)