gitutil: refactor the way to mock (#6032)

* Refactor the mock module store

* Only test on 1.14.x

1 files changed, 72 insertions, 66 deletions

diff --git a/internal/gitutil/pull_request_test.go b/internal/gitutil/pull_request_test.go
index d7453ff3..1322a674 100644
--- a/internal/gitutil/pull_request_test.go
+++ b/internal/gitutil/pull_request_test.go
@@ -24,75 +24,81 @@ func TestModuler_PullRequestMeta(t *testing.T) {
 		{ID: git.MustIDFromString("adfd6da3c0a3fb038393144becbf37f14f780087")},
 	}
 
-	MockModule.RepoAddRemote = func(repoPath, name, url string, opts ...git.AddRemoteOptions) error {
-		if repoPath != headPath {
-			return fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
-		} else if name == "" {
-			return errors.New("empty name")
-		} else if url != basePath {
-			return fmt.Errorf("url: want %q but got %q", basePath, url)
-		}
-
-		if len(opts) == 0 {
-			return errors.New("no options")
-		} else if !opts[0].Fetch {
-			return fmt.Errorf("opts.Fetch: want %v but got %v", true, opts[0].Fetch)
-		}
-
-		return nil
-	}
-	MockModule.RepoMergeBase = func(repoPath, base, head string, opts ...git.MergeBaseOptions) (string, error) {
-		if repoPath != headPath {
-			return "", fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
-		} else if base == "" {
-			return "", errors.New("empty base")
-		} else if head != headBranch {
-			return "", fmt.Errorf("head: want %q but got %q", headBranch, head)
-		}
-
-		return mergeBase, nil
-	}
-	MockModule.RepoLog = func(repoPath, rev string, opts ...git.LogOptions) ([]*git.Commit, error) {
-		if repoPath != headPath {
-			return nil, fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
-		}
+	mockModule := &MockModuleStore{
+		repoAddRemote: func(repoPath, name, url string, opts ...git.AddRemoteOptions) error {
+			if repoPath != headPath {
+				return fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
+			} else if name == "" {
+				return errors.New("empty name")
+			} else if url != basePath {
+				return fmt.Errorf("url: want %q but got %q", basePath, url)
+			}
 
-		expRev := mergeBase + "..." + headBranch
-		if rev != expRev {
-			return nil, fmt.Errorf("rev: want %q but got %q", expRev, rev)
-		}
+			if len(opts) == 0 {
+				return errors.New("no options")
+			} else if !opts[0].Fetch {
+				return fmt.Errorf("opts.Fetch: want %v but got %v", true, opts[0].Fetch)
+			}
 
-		return commits, nil
-	}
-	MockModule.RepoDiffNameOnly = func(repoPath, base, head string, opts ...git.DiffNameOnlyOptions) ([]string, error) {
-		if repoPath != headPath {
-			return nil, fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
-		} else if base == "" {
-			return nil, errors.New("empty base")
-		} else if head != headBranch {
-			return nil, fmt.Errorf("head: want %q but got %q", headBranch, head)
-		}
-
-		if len(opts) == 0 {
-			return nil, errors.New("no options")
-		} else if !opts[0].NeedsMergeBase {
-			return nil, fmt.Errorf("opts.NeedsMergeBase: want %v but got %v", true, opts[0].NeedsMergeBase)
-		}
-
-		return changedFiles, nil
-	}
-	MockModule.RepoRemoveRemote = func(repoPath, name string, opts ...git.RemoveRemoteOptions) error {
-		if repoPath != headPath {
-			return fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
-		} else if name == "" {
-			return errors.New("empty name")
-		}
-
-		return nil
+			return nil
+		},
+		repoMergeBase: func(repoPath, base, head string, opts ...git.MergeBaseOptions) (string, error) {
+			if repoPath != headPath {
+				return "", fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
+			} else if base == "" {
+				return "", errors.New("empty base")
+			} else if head != headBranch {
+				return "", fmt.Errorf("head: want %q but got %q", headBranch, head)
+			}
+
+			return mergeBase, nil
+		},
+		repoLog: func(repoPath, rev string, opts ...git.LogOptions) ([]*git.Commit, error) {
+			if repoPath != headPath {
+				return nil, fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
+			}
+
+			expRev := mergeBase + "..." + headBranch
+			if rev != expRev {
+				return nil, fmt.Errorf("rev: want %q but got %q", expRev, rev)
+			}
+
+			return commits, nil
+		},
+		repoDiffNameOnly: func(repoPath, base, head string, opts ...git.DiffNameOnlyOptions) ([]string, error) {
+			if repoPath != headPath {
+				return nil, fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
+			} else if base == "" {
+				return nil, errors.New("empty base")
+			} else if head != headBranch {
+				return nil, fmt.Errorf("head: want %q but got %q", headBranch, head)
+			}
+
+			if len(opts) == 0 {
+				return nil, errors.New("no options")
+			} else if !opts[0].NeedsMergeBase {
+				return nil, fmt.Errorf("opts.NeedsMergeBase: want %v but got %v", true, opts[0].NeedsMergeBase)
+			}
+
+			return changedFiles, nil
+		},
+		repoRemoveRemote: func(repoPath, name string, opts ...git.RemoveRemoteOptions) error {
+			if repoPath != headPath {
+				return fmt.Errorf("repoPath: want %q but got %q", headPath, repoPath)
+			} else if name == "" {
+				return errors.New("empty name")
+			}
+
+			return nil
+		},
+
+		pullRequestMeta: Module.PullRequestMeta,
 	}
-	defer func() {
-		MockModule = MockModuleStore{}
-	}()
+	beforeModule := Module
+	Module = mockModule
+	t.Cleanup(func() {
+		Module = beforeModule
+	})
 
 	meta, err := Module.PullRequestMeta(headPath, basePath, headBranch, baseBranch)
 	if err != nil {