dashboard/app: test coverage /file link

1. Init coveragedb client once and propagate it through context to enable mocking.
2. Always init coverage handlers. It simplifies testing.
3. Read webGit and coveragedb client from ctx to make it mockable.
4. Use int for file line number and int64 for merged coverage.
5. Add tests.

1 files changed, 2 insertions, 2 deletions

diff --git a/pkg/cover/file.go b/pkg/cover/file.go
index c56f88204..ea6c326f0 100644
--- a/pkg/cover/file.go
+++ b/pkg/cover/file.go
@@ -40,10 +40,10 @@ func DefaultHTMLRenderConfig() *CoverageRenderConfig {
 	}
 }
 
-func RendFileCoverage(repo, forCommit, filePath string, proxy covermerger.FuncProxyURI,
+func RendFileCoverage(repo, forCommit, filePath string, fileProvider covermerger.FileVersProvider,
 	mr *covermerger.MergeResult, renderConfig *CoverageRenderConfig) (string, error) {
 	repoCommit := covermerger.RepoCommit{Repo: repo, Commit: forCommit}
-	files, err := covermerger.MakeWebGit(proxy).GetFileVersions(filePath, repoCommit)
+	files, err := fileProvider.GetFileVersions(filePath, repoCommit)
 	if err != nil {
 		return "", fmt.Errorf("failed to GetFileVersions: %w", err)
 	}