Fix tag-number-pattern and useBranchName configuration options for ContinuousDeployment mode

docs/configuration.md

@@ -1,4 +1,4 @@
-# Configuration
+# Configuration
 GitVersion 3.0 is mainly powered by configuration and no longer has branching strategies hard coded.
 
 ## Configuration tool
@@ -79,8 +79,20 @@ The options in here are:
  - **`prevent-increment-of-merged-branch-version:`** When `release-2.0.0` is merged into master, we want master to build `2.0.0`.
     If `release-2.0.0` is merged into develop we want it to build `2.1.0`, this option prevents incrementing after a versioned branch is merged
 
- - **`tag-number-pattern:`** Pull requests require us to pull the pre-release number out of the branch name so `refs/pulls/534/merge` builds as `PullRequest.534`.
-   This is a regex with a named capture group called `number`
+ - **`tag-number-pattern:`** Pull requests require us to extract the pre-release number out of the branch name so `refs/pulls/534/merge` builds as `PullRequest.534`.
+   This is a regex with a named capture group called `number`  
+   If the branch mode is set to ContinuousDeployment, then the extracted `number` is appended to the name of the pre-release tag and the number portion is the number of commits since the last tag.
+   This enables consecutive commits to the pull request branch to generate unique full semantic version numbers when the branch is configured to use ContinuousDeployment mode.  
+   Example usage:
+```yaml
+branches:
+  (pull|pull\-requests|pr)[/-]:
+    mode: ContinuousDeployment
+    tag: PullRequest
+    increment: Inherit
+    track-merge-target: true
+    tag-name-pattern: '[/-](?<number>\d+)[-/]'
+```
 
  - **`track-merge-target:`** Strategy which will look for tagged merge commits directly off the current branch. For example `develop` → `release/1.0.0` → merge into `master` and tag `1.0.0`. The tag is *not* on develop, but develop should be version `1.0.0` now.
 

src/GitVersionCore.Tests/VariableProviderTests.cs

@@ -152,4 +152,47 @@ public void ProvidesVariablesInContinuousDeploymentModeForStableWhenCurrentCommi
 
         JsonOutputFormatter.ToJson(vars).ShouldMatchApproved(c => c.SubFolder("Approved"));
     }
+
+    [Test]
+    public void ProvidesVariablesInContinuousDeploymentModeWithTagNamePattern()
+    {
+        var semVer = new SemanticVersion
+        {
+            Major = 1,
+            Minor = 2,
+            Patch = 3,
+            PreReleaseTag = "PullRequest",
+            BuildMetaData = "5.Branch.develop"
+        };
+
+        semVer.BuildMetaData.Branch = "pull/2/merge";
+        semVer.BuildMetaData.Sha = "commitSha";
+        semVer.BuildMetaData.CommitDate = DateTimeOffset.Parse("2014-03-06 23:59:59Z");
+
+        var config = new TestEffectiveConfiguration(versioningMode: VersioningMode.ContinuousDeployment, tagNumberPattern: @"[/-](?<number>\d+)[-/]");
+        var vars = VariableProvider.GetVariablesFor(semVer, config, false);
+
+        vars.FullSemVer.ShouldBe("1.2.3-PullRequest0002.5");
+    }
+
+    [Test]
+    public void ProvidesVariablesInContinuousDeploymentModeWithTagSetToUseBranchName()
+    {
+        var semVer = new SemanticVersion
+        {
+            Major = 1,
+            Minor = 2,
+            Patch = 3,
+            BuildMetaData = "5.Branch.develop"
+        };
+
+        semVer.BuildMetaData.Branch = "feature";
+        semVer.BuildMetaData.Sha = "commitSha";
+        semVer.BuildMetaData.CommitDate = DateTimeOffset.Parse("2014-03-06 23:59:59Z");
+
+        var config = new TestEffectiveConfiguration(versioningMode: VersioningMode.ContinuousDeployment, tag: "useBranchName");
+        var vars = VariableProvider.GetVariablesFor(semVer, config, false);
+
+        vars.FullSemVer.ShouldBe("1.2.3-feature.5");
+    }
 }

src/GitVersionCore/OutputVariables/VariableProvider.cs

@@ -2,6 +2,8 @@
 {
     using System;
     using System.ComponentModel;
+    using System.Text.RegularExpressions;
+    using GitVersion.VersionCalculation;
 
     public static class VariableProvider
     {
@@ -13,7 +15,22 @@ public static VersionVariables GetVariablesFor(SemanticVersion semanticVersion,
                 // Continuous Deployment always requires a pre-release tag unless the commit is tagged
                 if (!semanticVersion.PreReleaseTag.HasTag())
                 {
-                    semanticVersion.PreReleaseTag.Name = config.ContinuousDeploymentFallbackTag;
+                    semanticVersion.PreReleaseTag.Name = NextVersionCalculator.GetBranchSpecificTag(config, semanticVersion.BuildMetaData.Branch, null);
+                    if (string.IsNullOrEmpty(semanticVersion.PreReleaseTag.Name))
+                    {
+                        semanticVersion.PreReleaseTag.Name = config.ContinuousDeploymentFallbackTag;
+                    }
+                }
+
+                // Evaluate tag number pattern and append to prerelease tag, preserving build metadata
+                if (!string.IsNullOrEmpty(config.TagNumberPattern))
+                {
+                    var match = Regex.Match(semanticVersion.BuildMetaData.Branch, config.TagNumberPattern);
+                    var numberGroup = match.Groups["number"];
+                    if (numberGroup.Success)
+                    {
+                        semanticVersion.PreReleaseTag.Name += numberGroup.Value.PadLeft(config.BuildMetaDataPadding, '0');
+                    }
                 }
 
                 // For continuous deployment the commits since tag gets promoted to the pre-release number

src/GitVersionCore/VersionCalculation/NextVersionCalculator.cs

@@ -69,24 +69,7 @@ public SemanticVersion FindVersion(GitVersionContext context)
 
         void UpdatePreReleaseTag(GitVersionContext context, SemanticVersion semanticVersion, string branchNameOverride)
         {
-            var tagToUse = context.Configuration.Tag;
-            if (tagToUse == "useBranchName")
-            {
-                tagToUse = "{BranchName}";
-            }
-            if (tagToUse.Contains("{BranchName}"))
-            {
-                Logger.WriteInfo("Using branch name to calculate version tag");
-
-                var branchName = branchNameOverride ?? context.CurrentBranch.FriendlyName;
-                if (!string.IsNullOrWhiteSpace(context.Configuration.BranchPrefixToTrim))
-                {
-                    branchName = branchName.RegexReplace(context.Configuration.BranchPrefixToTrim, string.Empty, RegexOptions.IgnoreCase);
-                }
-                branchName = branchName.RegexReplace("[^a-zA-Z0-9-]", "-");
-
-                tagToUse = tagToUse.Replace("{BranchName}", branchName);
-            }
+            var tagToUse = GetBranchSpecificTag(context.Configuration, context.CurrentBranch.FriendlyName, branchNameOverride);
 
             int? number = null;
             if (!string.IsNullOrEmpty(context.Configuration.TagNumberPattern))
@@ -119,6 +102,29 @@ void UpdatePreReleaseTag(GitVersionContext context, SemanticVersion semanticVers
             semanticVersion.PreReleaseTag = new SemanticVersionPreReleaseTag(tagToUse, number);
         }
 
+        public static string GetBranchSpecificTag(EffectiveConfiguration configuration, string branchFriendlyName, string branchNameOverride)
+        {
+            var tagToUse = configuration.Tag;
+            if (tagToUse == "useBranchName")
+            {
+                tagToUse = "{BranchName}";
+            }
+            if (tagToUse.Contains("{BranchName}"))
+            {
+                Logger.WriteInfo("Using branch name to calculate version tag");
+
+                var branchName = branchNameOverride ?? branchFriendlyName;
+                if (!string.IsNullOrWhiteSpace(configuration.BranchPrefixToTrim))
+                {
+                    branchName = branchName.RegexReplace(configuration.BranchPrefixToTrim, string.Empty, RegexOptions.IgnoreCase);
+                }
+                branchName = branchName.RegexReplace("[^a-zA-Z0-9-]", "-");
+
+                tagToUse = tagToUse.Replace("{BranchName}", branchName);
+            }
+            return tagToUse;
+        }
+
         static bool MajorMinorPatchEqual(SemanticVersion lastTag, SemanticVersion baseVersion)
         {
             return lastTag.Major == baseVersion.Major &&