Make the outline command able to use the DSL import

The outline command throws an error if the only the core DSL is
imported. This allows any of the DSL to be imported and still
produce a valid outline.

Signed-off-by: Brad P. Crochet <brad@redhat.com>

Author: bcrochet

ginkgo/outline/_testdata/dsl_core_test.go

@@ -0,0 +1,14 @@
+package example_test
+
+import (
+	. "github.com/onsi/ginkgo/v2/dsl/core"
+)
+
+var _ = Describe("DslCoreFixture", func() {
+	Describe("dslcore", func() {
+		It("dslcore", func() {
+			By("step 1")
+			By("step 2")
+		})
+	})
+})

ginkgo/outline/_testdata/dsl_core_test.go.csv

@@ -0,0 +1,6 @@
+Name,Text,Start,End,Spec,Focused,Pending
+Describe,DslCoreFixture,82,216,false,false,false
+Describe,dslcore,119,213,false,false,false
+It,dslcore,150,209,true,false,false
+By,step 1,176,188,false,false,false
+By,step 2,192,204,false,false,false

ginkgo/outline/_testdata/dsl_core_test.go.json

@@ -0,0 +1 @@
+[{"name":"Describe","text":"DslCoreFixture","start":82,"end":216,"spec":false,"focused":false,"pending":false,"nodes":[{"name":"Describe","text":"dslcore","start":119,"end":213,"spec":false,"focused":false,"pending":false,"nodes":[{"name":"It","text":"dslcore","start":150,"end":209,"spec":true,"focused":false,"pending":false,"nodes":[{"name":"By","text":"step 1","start":176,"end":188,"spec":false,"focused":false,"pending":false,"nodes":[]},{"name":"By","text":"step 2","start":192,"end":204,"spec":false,"focused":false,"pending":false,"nodes":[]}]}]}]}]

ginkgo/outline/import.go

@@ -47,7 +47,7 @@ func packageNameForImport(f *ast.File, path string) *string {
 // or nil otherwise.
 func importSpec(f *ast.File, path string) *ast.ImportSpec {
 	for _, s := range f.Imports {
-		if importPath(s) == path {
+		if strings.HasPrefix(importPath(s), path) {
 			return s
 		}
 	}

ginkgo/outline/outline_test.go

@@ -59,6 +59,7 @@ var _ = DescribeTable("Validate outline from file with",
 	Entry("mixed focused containers and specs", "mixed_test.go", "mixed_test.go.json", "mixed_test.go.csv"),
 	Entry("specs used to verify position", "position_test.go", "position_test.go.json", "position_test.go.csv"),
 	Entry("suite setup", "suite_test.go", "suite_test.go.json", "suite_test.go.csv"),
+	Entry("core dsl import", "dsl_core_test.go", "dsl_core_test.go.json", "dsl_core_test.go.csv"),
 )
 
 var _ = Describe("Validate position", func() {