Update Drone CI setup (#326)

* run only on `master` branch, to avoid duplicate builds
* run aarch64 also with Julia v1.6
* run tests also on Alpine Linux and increase tolerance for `expint` test to
  1e-13 to make tests pass on this platform

Author: giordano

.drone.jsonnet

@@ -1,22 +1,30 @@
-local Pipeline(os, arch, version) = {
+local Pipeline(os, arch, version, alpine=false) = {
     kind: "pipeline",
-    name: os+" - "+arch+" - Julia "+version,
+    name: os+" - "+arch+" - Julia "+version+(if alpine then " (Alpine)" else ""),
     platform: {
-	os: os,
-	arch: arch
+        os: os,
+        arch: arch
     },
     steps: [
-	{
-	    name: "build",
-	    image: "julia:"+version,
-	    commands: [
-		"julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
-	    ]
-	}
-    ]
+        {
+            name: "Run tests",
+            image: "julia:"+version+(if alpine then "-alpine" else ""),
+            commands: [
+                "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true)'",
+                "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build()'",
+                "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test(coverage=true)'"
+            ]
+        }
+    ],
+    trigger: {
+        branch: ["master"]
+    }
 };
 
 [
-    Pipeline("linux", "arm",   "1.3"),
-    Pipeline("linux", "arm64", "1.3")
+    Pipeline("linux", "arm",   "1.3.1"),
+    # Pipeline("linux", "arm",   "1.6.1"),
+    Pipeline("linux", "arm64", "1.3"),
+    Pipeline("linux", "arm64", "1.6"),
+    Pipeline("linux", "amd64", "1.6", true)
 ]

.drone.yml

@@ -1,16 +1,22 @@
 ---
 kind: pipeline
-name: linux - arm - Julia 1.3
+name: linux - arm - Julia 1.3.1
 
 platform:
   os: linux
   arch: arm
 
 steps:
-- name: build
-  image: julia:1.3
+- name: Run tests
+  image: julia:1.3.1
   commands:
-  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build()'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test(coverage=true)'"
+
+trigger:
+  branch:
+  - master
 
 ---
 kind: pipeline
@@ -21,9 +27,55 @@ platform:
   arch: arm64
 
 steps:
-- name: build
+- name: Run tests
   image: julia:1.3
   commands:
-  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true); using Pkg; Pkg.build(); Pkg.test(coverage=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build()'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test(coverage=true)'"
+
+trigger:
+  branch:
+  - master
+
+---
+kind: pipeline
+name: linux - arm64 - Julia 1.6
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+- name: Run tests
+  image: julia:1.6
+  commands:
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build()'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test(coverage=true)'"
+
+trigger:
+  branch:
+  - master
+
+---
+kind: pipeline
+name: linux - amd64 - Julia 1.6 (Alpine)
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: Run tests
+  image: julia:1.6-alpine
+  commands:
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using InteractiveUtils; versioninfo(verbose=true)'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.build()'"
+  - "julia --project=. --check-bounds=yes --color=yes -e 'using Pkg; Pkg.test(coverage=true)'"
+
+trigger:
+  branch:
+  - master
 
 ...

test/expint.jl

@@ -201,7 +201,7 @@ using Base.MathConstants
     @test expint(-2, -2.2) ≈ -2.0680909972407264331884989 rtol=1e-14
     @test expint(-2.2, 3.2) ≈ 0.024950173497409329191241353395358 rtol=1e-14
     @test expint(+2.2, 3.2) ≈ 0.008044603700773423319087602010 rtol=1e-12
-    @test expint(3.2, 1.3) ≈ 0.070147692224611216675759479422283315452559216337905 rtol=1e-14
+    @test expint(3.2, 1.3) ≈ 0.070147692224611216675759479422283315452559216337905 rtol=1e-13
     @test expint(-20, -1000) === -Inf
 end