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Force the solver to look at the best match first

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Add support clauses to force the solver to look after the best match
first.

Closes #29
This commit is contained in:
Ettore Di Giacinto
2019-12-16 17:56:52 +01:00
committed by Ettore Di Giacinto
parent 0ccaf47f45
commit d583fa8bf5
2 changed files with 66 additions and 20 deletions
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34
pkg/solver/solver_test.go
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@@ -359,6 +359,40 @@ var _ = Describe("Solver", func() {
Expect(len(solution)).To(Equal(5))
Expect(err).ToNot(HaveOccurred())
})
It("Selects best version", func() {
E := pkg.NewPackage("E", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
C := pkg.NewPackage("C", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
D2 := pkg.NewPackage("D", "1.9", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
D := pkg.NewPackage("D", "1.8", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
D1 := pkg.NewPackage("D", "1.4", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})
B := pkg.NewPackage("B", "1.1", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
A := pkg.NewPackage("A", "", []*pkg.DefaultPackage{&pkg.DefaultPackage{Name: "D", Version: ">=1.0"}}, []*pkg.DefaultPackage{})
for _, p := range []pkg.Package{A, B, C, D, D1, D2, E} {
_, err := dbDefinitions.CreatePackage(p)
Expect(err).ToNot(HaveOccurred())
}
for _, p := range []pkg.Package{} {
_, err := dbInstalled.CreatePackage(p)
Expect(err).ToNot(HaveOccurred())
}
s = NewSolver(dbInstalled, dbDefinitions, db)
solution, err := s.Install([]pkg.Package{A, B})
Expect(solution).To(ContainElement(PackageAssert{Package: A, Value: true}))
Expect(solution).To(ContainElement(PackageAssert{Package: B, Value: true}))
Expect(solution).ToNot(ContainElement(PackageAssert{Package: D1, Value: true}))
Expect(solution).ToNot(ContainElement(PackageAssert{Package: D, Value: true}))
Expect(solution).To(ContainElement(PackageAssert{Package: D2, Value: true}))
Expect(solution).To(ContainElement(PackageAssert{Package: D, Value: false}))
Expect(solution).To(ContainElement(PackageAssert{Package: D1, Value: false}))
Expect(len(solution)).To(Equal(5))
Expect(err).ToNot(HaveOccurred())
})
It("Uninstalls simple package correctly", func() {
C := pkg.NewPackage("C", "", []*pkg.DefaultPackage{}, []*pkg.DefaultPackage{})